Lawn tractor battery voltage. Best Lawn Mower and Tractor Batteries Types, Sizes, and Replacements

Best Lawn Mower and Tractor Batteries. Types, Sizes, and Replacements

A lawn mower, tractor, and garden starting batteries are used for starting/cranking internal combustion engines and sometimes for powering other electric loads, including lights, smaller winches, various pumps, and similar devices.

When looking for a new battery, one must pay attention to several details in order to get the right battery that will serve well for years ahead.

Updated: October 27, 2022.

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Intro to Lawn Mower, Lawn Tractor, and Garden Starting Batteries

Riding lawn mowers, lawn tractors, power generators, and other tools and appliances are commonly powered by internal combustion engines, which use small rechargeable batteries for starting.

Most of such vehicles, tools, and appliances also feature a manual recoil starting system, but it is much more convenient to press the button or turn the key and start the engine. just like in cars.

The size of the internal combustion engines found in power generators, lawn mowers, and tractors vary from just 2-3 HPs to large 30-40 HP gas engines powering large riding lawn mowers.

And because of that, starting batteries used in such vehicles and devices vary from small batteries being able to provide a few dozen of CCA Amps to larger batteries being able to crank even a smaller car.

When looking for a lawn mower battery replacement, there are a few things to consider first:

Battery Voltage: Is a riding lawn mower battery a 12-volt battery?

Most riding lawn mowers use 12V batteries, but there are also some models, especially smaller ones, that use 6V batteries.

Since most manufacturers tend to move to 12V electric systems, in this article, we are going to discuss only 12V batteries.

Battery Chemistry Types

There are basically two types of batteries used as starting batteries. lithium and lead-acid batteries.

Lithium batteries, even Lithium Iron Phosphate (LiFePO4) batteries, are rather sensitive power sources that feature Battery Management Systems (BMS) that make their use much safer since BMS protects the battery from unwanted events like overcharge, over-discharge, over-current, short-circuit, over-temperature, etc.

Thanks to the built-in BMS, lithium batteries can be recharged using onboard alternators and often using older style lead-acid battery chargers (model dependent), but they should NOT be recharged using modern intelligent lead-acid battery chargers. such chargers can even damage the BMS system and void the lithium battery warranty.

Although lithium starting batteries are several times lighter than lead-acid batteries, weight savings for lawn mowers and tractors, and other similar vehicles and garden tools and appliances are not worth the price difference and potential complications. IMHO, of course.

When compared with lithium batteries, lead-acid batteries are much heavier, have issues with capacity decrease when being discharged with strong currents, don’t support a large number of charging/discharging cycles, etc.

But, as starting batteries, lead-acid batteries are very reliable, robust, and very tolerant to charging conditions, and they are mostly cheaper than lithium batteries.

Lead-acid batteries differ in design and can be wet/flooded, enhanced wet/flooded, Absorbent Glass Mat (AGM), and Gel-Cell batteries.

Since AGM and Gel-Cell batteries are spill-proof and maintenance-free batteries, they are recommended models for lawn mowers, lawn tractors, power generators, etc.

Terminal Position and Type

Batteries come with different terminal types and with different terminal orientations.

When buying a new battery, be sure that the terminals and the orientation of the new battery match the terminal type and orientation of the old battery.

If they don’t, one may have issues connecting the new battery. If that happens, the workaround is to use cable extensions and terminal adapters.

However, the best thing to do is to get the battery with the same terminal type and orientation.

Fortunately, most starting batteries come with standardized terminals depending on their size/group.

Cold Cranking Amps (CCA)

CCA (Cold Cranking Amps) is the maximum current that a new, fully charged, 12V battery can deliver for 30 seconds, with the voltage NOT dropping below 7.2V, at 0°F (-18°C).

The new battery replacement for starting applications should have the same or better CCA rating in order to perform well.

Battery Capacity (Ah)

The capacity of lead-acid batteries is determined by how many amps of current can new, fully charged 12V battery at 80°F (~25°C), deliver for 20 hours without its voltage falling below 10.5V.

The capacity of starting/cranking batteries is often given for a period of 10 hours and not 20 hours. they are, after all, not designed nor intended for deep discharge applications.

Reserve Capacity (RC)

RC (Reserve Capacity) is the number of minutes that a new, fully charged battery (at 80°F, ~25°C) can deliver a 25A current and maintain a voltage above its cut-off value (10.5V for lead-acid batteries).

RC value is important for deep cycle batteries used in marine applications (for trolling motors, for example), RVs (in-house batteries), solar systems (off-the-grid applications), etc., and not so for riding lawn mowers, lawn tractors, and similar.

Of course, sometimes there are other things to consider when buying a new lawn mower battery, but these are the most important ones.

How to Charge Lawn Mower and Tractor Batteries

Lawn mower and tractor starting batteries are charged via an onboard alternator and charge controller, if present. Whenever the engine is turned On, the alternator recharges the battery and keeps it fully charged.

When the batteries are being charged separately, it is important to use a proper battery charger:

When wintering the lawn mowers and tractors with internal combustion engines, it is a good practice to recharge the battery fully and connect it to the battery maintainer during the storage period.

Lithium batteries generally have a much lower self-discharge rate than lead-acid batteries and can be left in the lawn mower and/or tractor for a longer period of time without recharging. as long as the parasite loads are minimum, preferably zero.

Most Common Lawn Mower Starting Battery Sizes

The following cross-reference chart lists some of the most popular lawn mower batteries with their most important features and specifications.

Note: Capacity, CCA, and weight are given for the lead-acid batteries.

Battery Size Dimensions (inches/mm) Capacity CCA Weight
U1 U1R 7.75 x 5.1875 x 7.3125197 x 132 x 186 35 Ah (20h) 300-320 22-26 lbs 10-11.8 kg
YTX30L-BS 6.5625 x 4.9375 x 6.875166 x 126 x 175 30 Ah (10h) 360-400 17-22 lbs7.7-10 kg
YTX24HL-BS 8.0625 x 3.4375 x 6.375205 x 87 x 162 21 Ah (10h) 300-350 13-18 lbs5.9-8.2 kg
YTX20L-BS 6.875 x 3.4375 x 6.125175 x 87 x 155 14-20 Ah (10h) 220-330 11-14 lbs 5.0-6.4 kg
YTX14-BS 5.875 x 3.4375 x 5.75150 x 87 x 146 12-14 Ah (10h) 190-235 8-11 lbs 3.6-5.0 kg
YTX12-BS 5.875 x 3.5 x 5.125150 x 88 x 130 10 Ah (10h) 160-210 7-10 lbs3.1-4.5 kg
YTX9-BS 5.875 x 3.4375 x 4.125150 x 87 x 105 6-8 Ah (10h) 120-180 6-8 lbs 2.7-3.7 kg
YTX5L-BS 4.4375 x 2.75 x 4.125113 x 70 x 105 4 Ah (10h) 70-80 3.3-4.5 lbs1.5-2 kg

As one can see, CCA values differ from 70-80 Amps for YTX5L-BS batteries to 400 Amps for YTX30L-BS AGM batteries, while lithium models often can provide 500 or even more starting Amps.

Best Group U1 U1R Battery Equivalents and Replacements

BCI Group U1 and U1R batteries are mostly general-purpose/deep cycle batteries, with only very few models being designed as dual-purpose and/or starting batteries.

Groups U1 and U1R batteries’ physical dimensions are (L x W x H) 7 3/4 x 5 3/16 x 7 5/16 inches (~197 x 132 x 186 mm) with the U1 battery having a positive terminal on the left side, and U1R having a positive terminal post on the right side of the battery (hence the ‘R’ as part of the label).

The average lead-acid U1/U1R battery’s 10-20h capacity is usually in the 33-37 Ah range, and the average weight is around 23-26 pounds.

As starting batteries, best U1/U1R batteries feature CCA ratings in the 300-320 range, while most of the batteries are able to provide at least 300 Amps for 3-5 seconds, with some models being able to provide 500 Amps for 3-5 seconds.

The following cross-reference chart lists the most popular U1/U1R batteries with their most important features and specifications.

Capacity (Ah)

Discharge Characteristics

Weight (lbs/kg)

Note: Amazon affiliate links (‘Model’ column) in the table open in the new Windows, feel free to check them for the most up-to-date offers and prices.

Best BCI Group U1 and U1R AGM batteries include:

VMAXTANKS V35-857 Battery

VMAXTANKS V35-857 battery, which features a CCA rating of 300 Amps and an RC value of 75 minutes at an acceptable weight of 25 pounds (~11.3 kg).

VMAXTANKS V35-857 battery is labeled as a deep-cycle battery, but it is an excellent all-around performer and is commonly used as a starting battery in lawn mowers and lawn tractors that use U1 batteries.

Also, it is often used as a kayak trolling battery, as a small off-the-grid battery, as a solar battery, as a backup/UPS battery, and similar.

The battery is able to withstand the following:

  • 3500 cycles at 10% DoD,
  • 1500 cycles at 25% DoD,
  • 900 cycles at 50% DoD,
  • 300 cycles at 100% DoD,

which is a very good result for a battery that is labeled as a deep-cycle battery, but it is actually a dual-purpose battery.

VMAXTANKS V35-857 battery is a spill-proof, maintenance-free battery that can operate in almost any position (except upside down), it accepts charge well and features a relatively low self-discharge rate (1-2% per month at room temperature).

Mighty Max ML-U1-CCAHR battery

Mighty Max ML-U1-CCAHR battery is a specially designed U1 lawn mower and tractor battery.

It is lighter than other U1 batteries, weighs only 14.57 pounds (~6.6 kg), and features a 10h capacity of only 18 Ah.

But, Mighty Max ML-U1-CCAHR also features a CCA rating of 320 Amps and is able to provide 20 Amps for 30 minutes down to 9.6 volts.

When the battery is stored for a longer period of time, recommended charging point is @55-60% SoC, or when the voltage is around 12.35.

Note: the battery lifetime can be even prolonged if the stored battery is connected to the intelligent battery maintainer.

When the battery is stored @20°C, the average self-discharge rate is ~3% per month. recharge the stored battery every 3-6 months, and it will be fine.

For lawn mowers and tractors with a battery charging system requiring only starting/cranking U1 battery, Mighty Max ML-U1-CCAHR is perhaps the best choice.

Weize LFP1235 Deep Cycle AGM Battery

Weize LFP1235 is another excellent all-around performer, being able to provide 350 Amps for 5 seconds and 20.4 Amps for 60 minutes, down to 10.5 volts.

Also, it is one of the lighter AGM U1 batteries, weighing 23.2 pounds (~10.5 kg).

Weize LFP1235 (sometimes labeled as Weize TL1235) deep cycle battery is a spill-proof, maintenance-free, Sealed Lead Acid (SLA) battery that can operate in almost any position (except upside down), and it is vibration- and heat-resistant.

Thanks to the very balanced design, the Weize LFP1235 battery is one of the most popular U1 batteries, commonly used as lawn mower/tractor battery, wheelchair battery, in electric vehicles, for security systems, UPS battery, etc.

Mighty Max ML35-12 Deep Cycle AGM Battery

Mighty Max ML35-12 is one of the most, if not the most, popular U1 battery. it has excellent features, it comes at an affordable price, and it is one of the best-documented batteries of this size.

Mighty Max ML35-12 battery is a deep cycle AGM SLA battery, being able to provide 330 Amps for 5 seconds and 17.2 Amps for 60 minutes (down to 10.5 volts).

It accepts charge well. it features a max. charging current 10.5 Amps, which is excellent for a 37 Ah battery.

However, like all other batteries, when being recharged using AGM battery chargers, the charging current should be kept around 0.1C-0.15C.

Mighty Max ML35-12 battery also features a very low self-discharge rate. when the battery is stored @20°C, capacity drops:

As a general rule of thumb, lead-acid batteries should be recharged when their capacity drops down to 80%. Or, they should be connected to the advanced battery maintainer.

If You are looking for an all-around U1 battery, Mighty Max ML35-12 is one of the best choices.

Of course, other batteries in the chart are also commonly used in applications requiring U1 and U1R batteries and are tested by numerous users in real-life situations on a daily basis.

For the most up-to-date offers and prices, feel free to check the 12V 35Ah U1 Battery Amazon link (the link opens in the new window).

Best Group YTX30L-BS Battery Equivalents and Replacements

YTX30L-BS batteries feature physical dimensions of (L x W x H) 6.5625 x 4.9375 x 6.875 inches (166 x 126 x 175 mm) and are some of the largest Motorcycle/Powersports batteries, optimized for starting/cranking applications.

As such, YTX30L-BS batteries commonly have CCA ratings better than larger and heavier U1 and U1R batteries. on average, YTX30L-BS batteries feature a CCA rating of 280-385 Amps for lead-acid batteries and 480-720 Amps for lithium batteries.

The 10h capacity of the YTX30L-BS batteries varies around 28-30 Ah for lead-acid batteries, while the capacity of lithium batteries varies greatly and is usually in the 10-20 Ah range.

One of the very interesting features of YTX30L-BS batteries is that the negative battery terminal is set to the left, hence the ‘L’ as the part of the label. YTX30 L.BS battery.

The following cross-reference chart lists some of the most popular lead-acid and lithium YTX30L-BS batteries, with their most important features and specifications:

Model 10h Capacity (Ah) CCA (Amps) Weight (lbs/kg) Review
Banshee DLFP30-HL 12.5 625 (Lithium) 6.3 lbs; 2.86 kg
Banshee YTX30L-BS 28 350 22 lbs; 9.97 kg
Chrome 30L-BS Zipp 30 385
Chrome YTX30L-BS 30 385 19.8 lbs; 8.97 kg
DEESPEAK DS-30L-BS 16 720 (Lithium) 8.2 lbs; 3.71 kg DEESPEAK DS-30L-BS
Energizer TX30L 30 385 21.6 lbs; 9.8 lbs
Mighty Max YTX30L-BS 30 385 21.4 lbs; 9.7 kg
MMG YIX30L-BS MMG-7 480 (Lithium) 4.18 lbs; 1.9 kg
Neptune YTX30L-BS 30 290 19 lbs; 8.61 kg
NOCO NLP30 7.8 700 max. (Lithium) 5.0 lbs; 2.27 kg NOCO NLP30
PowerStar YTX30L-BS 30 385
TPE YTX30L-BS 16 720 (Lithium) 7.28 lbs; 3.3 kg
UPLUS YTX30L-BS 30 400 20.7 lbs; 9.38 kg
Yuasa YUAM22H30 YB30L-B 30 300 13.22 lbs; 6.0 kg
Yuasa YUAM6230X YIX30L-BS 30 385 22 lbs; 9.97 kg
Weize YTX30L-BS 30 385 17.7 lbs; 8.1 kg Weize YTX30L-BS

Note: Amazon links (Model column) open in the new Windows, feel free to check them for the most up-to-date offers and prices.

As one can see, there are several YTX30L-BS AGM batteries that feature a 10h capacity of 30Ah and a CCA rating of 385 Amps, with the most popular models being Chrome YTX30L-BS, Weize YTX30L-BS, Yuasa YIX30L-BS, etc.

Although AGM batteries are generally very good all-around performers and YTX30L-BS batteries can be used for powering various other loads, not just engine starters, they are designed for high-current applications, and they should be used as such.

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Best Group YTX24HL-BS Battery Equivalents and Replacements

YTX24HL-BS batteries feature physical dimensions of (L x W x H) 8.0625 x 3.4375 x 6.375 inches (205 x 87 x 162 mm), 10h capacity of ~21 Ah, and CCA rating in the 260-350 Amps for AGM/Gel-Cell batteries and up to 420 Amps for the lithium batteries.

lawn, tractor, battery, voltage, best

Despite having a 30-40% smaller capacity than YTX30L-BS batteries, YTX24HL-BS batteries feature CCA ratings that are very close to the CCA ratings of the YTX30L-BS batteries. YTX24HL-BS batteries are designed as ‘High Performance’ batteries, hence the ‘H’ as part of their labels. YTX24 H L-BS battery.

Also, YTX24HL-BS batteries feature a negative battery terminal to the left side of the battery, hence the ‘L’ as part of their label. YTX24H L.BS battery.

The following cross-reference chart lists some of the most popular YTX24HL-BS batteries with their most important features and specifications:

Model 10h Capacity (Ah) CCA (Amps) Weight (lbs/kg) Review
Chrome YTX24HL-BS 21 300 13.11 lbs; 5.94 kg
Chrome YTX24HL-BS Pirate Bay 21 300 13.11 lbs; 5.94 kg
Energizer TX24HL 21 350 16 lbs; 7.25 kg
EverLast CTX24HL-BS 21 330 18 lbs; 8.16 kg
KMG YTX24HL-BS 24 350
Mighty Max YTX24HL-BS 21 260 15 lbs; 6.78 kg
Mighty Max YTX24HL-BS Gel 21 210 14.35 lbs; 6.5 kg
MMG YTX24HL-BS AGM 21 350 14.4 lbs; 6.52 kg
MMG YTX24HL-BS Lithium 7 420 (Lithium) 4 lbs; 1.81 kg
PowerStar PM24HL-BS 24 320 17 lbs; 7.7 kg
Protek YTX24HL-BS 21 350 17 lbs; 7.7 kg
UpStart YTX24HL-BS 21
Yuasa YTX24HL-BS 21 350 17 lbs; 7.7 kg

Note: Amazon links (Model column) open in the new Windows, feel free to check them for the most up-to-date offers and prices.

Lithium YTX24HL-BS batteries are not yet as popular as AGM/Gel-Cell batteries. they are used in high-performance motorcycles, snowmobiles, and similar vehicles where weight savings of 10-12 pounds can lead to improved performances, justifying the price difference and lower actual capacity.

Although YTX24HL-BS batteries are smaller than YTX30L-BS and especially U1 and U1R batteries, they can often crank/start surprisingly large engines.

For lawn mowers, lawn tractors, power generators, and other similar applications, AGM and Gel-Cell batteries are the most cost-effective batteries and the recommended ones.

Best Group YTX20L-BS and YTX20HL-BS Battery Equivalents and Replacements

YTX20L-BS and YTX20HL-BS batteries share the same physical dimension and terminal orientation (‘L’. negative to the LEFT side of the battery), but the YTX20HL-BS batteries are considered as ‘High-Performance’ versions of the ‘basic’ YTX20L-BS batteries.

Physical dimensions of these batteries are (L x W x H) 6.875 x 3.4375 x 6.125 inches (175 x 87 x 155 mm).

YTX20L-BS lead-acid batteries feature a 10h capacity of 14-19 Ah, a CCA rating of 220-270 Amps, and a weight of 12.5-15.0 pounds.

YTX20HL-BS lead-acid batteries feature a similar 10h capacity of 18-19 Ah and weight of 13-15 pounds, but the CCA rating is higher and is around ~310 Amps, allowing YTX20HL-BS to crank larger engines more easily.

Lithium YTX20L-BS/YTX20HL-BS batteries are not as common as lead-acid sealed batteries, but they offer a weight savings of around 10 pounds and are able to provide stronger currents, generally in the 350-500 Amps range.

The following cross-reference chart lists some of the most popular YTX20L-BS and YTX20HL-BS batteries with their most important features and specifications.

Model 10h Capacity (Ah) CCA (Amps) Weight (lbs/kg) Review
Antigravity AG-ATX20-RS 10 680 (lithium) 3.8 lbs; 1.73 kg Antigravity AG-ATX20-RS
Banshee 20HL-BS 18 500 (Lithium) 4.95 lbs; 2.24 kg
Banshee YTX20L-BS 18 310 18 lbs; 8.16 kg
Battery Tender BTL20A360CW 6.1 360 (Lithium) 3.42 lbs; 1.55 kg
Chrome YTX20HL-BS 18 310 13.52 lbs; 6.12 kg
Chrome YTX20HL-BS Pirate Bay 18 310 13.22 lbs; 6.0 kg
Chrome YTX20L-BS 18 270 13.52 lbs; 6.12 kg
Chrome YTX20L-BS Pro 18 270 13.88 lbs; 6.29 kg
Chrome YTX20L-BS Zipp 18 270 13.88 lbs; 6.29 kg
Chrome YTX20L-BS 18 270 13.88 lbs; 6.29 kg
Energizer TX20HL 18 310 13.67 lbs; 6.2 kg
EverLast CTX20HL-BS 18 310 14.89 lbs; 6.75 kg
EverLast CTX20L-BS 14 220 13.77 lbs; 6.24 kg
ExpertPower YTX20L-BS 20 330 13.7 lbs; 6.2 kg
ExpertPower YTX20L-BS Gel 20 340 13.7 lbs; 6.2 kg
Mighty Max YTX20L-BS 18 270 13 lbs; 5.9 kg
MMG YTX20L-BS MMG-6 420 (Lithium) 3.09 lbs; 1.4 kg
NOCO NLP20 7 600 max. (Lithium) 3.73 lbs; 1.7 kg NOCO NLP20
PowerStar YTX20L-BS 18 220 15 lbs; 6.8 kg
SigmasTek STX20HL-BS 18 310 13.44 lbs; 6.1 kg
SigmasTek STX20L-BS 19 270 11.61 lbs; 5.26 kg
TPE DLF20L-BS 12 620 (Lithium) 4.4 lbs; 2.0 kg
TPE YTX20L-BS 7 700 (Lithium) 3.09 lbs; 1.4 kg
Weize YTX20HL-BS 18 310 12.85 lbs; 5.82 kg Weize YTX20L-BS/YTX20HL-BS
Weize YTX20L-BS 18 270 12.59 lbs; 5.7 kg
Yuasa YTX20HL-BS 18 310 13.91 lbs; 6.3 kg
Yuasa YTX20L-BS 18 270 14.85 lbs; 6.73 kg

Note: Amazon links (Model column) open in the new Windows, feel free to check them for the most up-to-date offers and prices.

As one can see, many brands manufacture both YTX20L-BS and YTX20HL-BS batteries, despite very similar performances.

YTX20L-BS batteries are designed with reliability, robustness, and vibration resistance in mind and are, as such, perhaps a better choice for lawn mowers, lawn tractors, power generators, and similar vehicles and applications.

The most popular YTX20L batteries are:

Weize YTX20L-BS High-Performance Powersports AGM Battery

Weize YTX20L-BS is a very popular SLA AGM starting/cranking YTX20L- BS battery, featuring 10h capacity of 18Ah and 270 CCA.

The battery weighs ~12.6 pounds (~5.7 kg), it is a completely sealed, spill-proof, maintenance-free battery with increased resistance to mechanical impacts and vibrations, making it one of the best choices not only for motorcycles, ATVs, snowmobiles, and similar vehicles but also for lawn mowers and garden tractors.

When the battery is being charged outside the vehicle, recommended charging current is 1.8V (0.1C). the use of an advanced AGM battery charger with temperature compensation is highly recommended.

Yuasa YUAM320BS YTX20L-BS Battery

Yuasa YUAM320BS YTX20L-BS battery is another very popular YTX20L-BS battery featuring 18Ah (10h) capacity and 270A CCA current.

The battery is Valve Regulated Lead-Acid (VRLA), sealed AGM battery, designed to be robust and reliable and to endure vibrations and mechanical impacts. use it, but don’t abuse it!

When the battery is charged outside the vehicle, recommended charging current is 1.8A (0.1C).

The battery weighs 14.85 pounds (6.73 kg).

Note: battery is delivered dry and must be activated by the user.

On the other hand, YTX20HL-BS batteries are designed with performance in mind and are, as such, a better choice for high-performance motorcycles, ATVs, snowmobiles, and similar.

And thanks to the advanced AGM and Gel-Cell technologies, these batteries are also very reliable and vibration resistant.

Many manufacturers offer YTX20HL-BS batteries, but again, Weize and Yuasa stand out of the crowd thanks to very balanced designs.

Weize YTX20HL-BS High-Performance AGM Battery

Weize YTX20HL-BS High-Performance AGM Battery, also labeled as Weize TLM20-12, features a 10h capacity of 18Ah, and a CCA value of 310 Amps, which is an excellent result for a 12.85 lbs (5.82 kg) battery.

Because of the spill-proof, maintenance-free design, good resistance to vibrations, and mechanical impacts, the Weize YTX20HL-BS battery is one of the best buys and one of the most popular YTX20HL-BS batteries on the market.

When the battery is charged using a battery charger, recommended charging current is 0.1C (1.8A).

Weize YTX20HL-BS battery is intended for motorcycles, ATVs, snowmobiles, and other Powersports vehicles, making it a preferred model for lawn mowers and garden tractors as well.

Yuasa YUAM620BH YTX20HL-BS Battery

Yuasa YUAM620BH YTX20HL-BS Battery is another very popular high-performance YTX20HL-BS battery featuring 18V 10h capacity and 310 CCA Amps.

The battery is a VRLA AGM spill-proof and maintenance-free battery and can operate in all positions except upside-down.

The battery weighs 13.91 pounds (~6.3 kg). the battery is delivered in dry condition and must be activated when it arrives.

Note: some people prefer dry batteries that must be activated, while other users don’t want to do anything regarding battery acid.

Best Group YTX14-BS Battery Equivalents and Replacements

YTX14-BS batteries feature physical dimensions of 5.875 x 3.4375 x 5.75 inches (150 x 87 x 146 mm) and the same with less popular YTX14L-BS batteries (negative battery terminal to the Left).

YTX14-BS and YTX14L-BS lead-acid batteries feature a 10h capacity of 12-14 Ah and a CCA rating of 190-235 Amps.

YTX14-BS and YTX14L-BS lithium batteries are not as common as lead-acid batteries, but they ensure weight savings of some 7-8 pounds while having a CCA rating of 300-500 Amps.

Note: there are several battery dimensions that share a very similar label, but they differ in size, including YTX14AH-BS and YTX14AHL-BS batteries, which feature physical dimensions of (L x W x H) 5.25 x 3.5 x 6.5625 inches (134 x 89 x 166 mm), ~12Ah 10h capacity and 190-235 CCA rating.

The following cross-reference chart lists some of the most popular YTX14-BS batteries with their most important features and specifications:

Model 10h Capacity (Ah) CCA (Amps) Weight (lbs/kg) Review
AMPXELL AMX12-ST080B 8 480 (Lithium) 3.2 lbs; 1.45 kg AMPXELL AMX12-ST080B
Banshee YTX14-BS 14 200 10 lbs; 4.53 kg
Banshee YTX14L-BS 8 380 (Lithium) 3.1 lbs; 1.41 kg
Chrome YTX14-BS iGel 12 200 9.92 lbs; 4.5 kg Chrome YTX14-BS iGel
Chrome YTX14-BS Pirate Bay 12 200 9.7 lbs; 4.4 kg
DEESPAEK YTX14-BS 9 520 (Lithium) 3.5 lbs; 1.58 kg
Deka ETX14 12 220 12 lbs; 5.44 kg
DS18 YTX14-BS 14 210A @5sec 10.2 lbs; 4.62 kg
Energizer YTX14-BS 12 200 9.81 lbs; 4.44 kg
EverLast CTX14-BS 12 190 10.71 lbs; 4.85 kg
ExpertPower ETX14-BS 14 220 10 lbs; 4.53 kg
Interstate YTX14-BS 12 200 11.42 lbs; 5.17 kg
KMG YTX14-BS 12 180 9 lbs; 4.08 kg
Mighty Max YTX14-BS Battery 12 200 9.92 lbs; 4.5 kg
Mighty Max YTX14-BS Gel 12 200 10.42 lbs; 4.72 kg
MMG YTX14-BS MMG-4 300 (Lithium) 2 lbs; 0.91 kg
NiCHE YTX14-BS 12 180 9.7 lbs; 4.40 kg
NOCO NLP14 4 500 max. (Lithium) 2.58 lbs; 1.17 kg NOCO NLP14
PowerSource WP14-BS 12 210 11.8 lbs; 5.34 kg
PowerStar PM14-BS-HD 14 225 10 lbs; 4.53 kg
Shorai LFX21A6-BS12 315 (Lithium) 3.03 lbs; 1.4 kg Shorai LFX21A6-BS12
SigmasTek YTX14-BS 12 200 9.5 lbs; 4.3 kg
TPE YTX14-BS 12 520 (Lithium) 4.15 lbs; 1.88 kg
UPLUS YTX14-BS 12 200 9.5 lbs; 4.3 kg
Upstart UB-YTX14-BS 12 200 9.9 lbs; 4.49 kg
Weize YTX14-BS 12 235 9.46 lbs; 4.29 kg Weize YTX14-BS
Yuasa YTX14-BS 12 200 8.2 lbs; 3.7 kg

Note: Amazon links (Model column) open in the new Windows, feel free to check them for the most up-to-date offers and prices.

Lithium YTX14-BS batteries are gaining in popularity, but AGM YTX14-BS batteries are still a much more popular type.

Manufacturers of lithium starting batteries, YTX14-BS size included, often label their batteries with the ‘lead-acid equivalent’ capacity, although their batteries have a much smaller actual capacity.

Although actual capacity is of lesser importance for starting batteries, parasite loads may discharge smaller capacity lithium batteries much faster than the larger lead-acid AGM and Gel-Cell batteries.

To prevent issues due to the parasite loads, some manufacturers include in their lithium batteries over-discharge protection with the Reset Button. when the parasite loads discharge the battery too low, BMS cuts off the battery from the vehicle. By pressing Reset Button, the user can activate the battery, which still has enough charge left to more or less safely crank the engine.

Note: Such system is NOT present in all lithium starting batteries, YTX14-BS batteries included.

Best Group YTX12-BS Battery Equivalents and Replacements

YTX12-BS batteries are very similar in size to YTX14-BS batteries. their physical dimensions are 5.875 x 3.5 x 5.125 inches (150 x 88 x 130 mm).

Lead-acid YTX12-BS batteries feature a 10h capacity of ~10 Ah, CCA rating in the 180-210 Amps range, and weigh 7-10 pounds.

Since YTX12-BS batteries are very popular Motorsport/Powersport batteries, many manufacturers also offer lithium YTX12-BS starting batteries which offer weight savings of 6-7 pounds, smaller capacity, but a better CCA rating of 250-500 Amps.

For high-performance and professional applications, lithium YTX12-BS batteries are highly recommended, but for residential riding lawn mowers and tractors, a good AGM or Gel-Cell YTX12-BS battery is the way to go.

The following cross-reference chart lists some of the most popular AGM, Gel-Cell, and Lithium YTX12-BS batteries with their most important features and specifications:

Model 10h Capacity (Ah) CCA (Amps) Weight (lbs/kg) Review
AMPXELL AMX12-ST080B 8 480 (Lithium) 3.2 lbs; 1.45 kg AMPXELL AMX12-ST080B
Anti-Gravity AG-ATX-12-HD 8 480 (Lithium) 3 lbs; 1.36 kg
Banshee 12-BS 10 330 (Lithium) 3.45 lbs; 1.57 kg
Battery Tender BTL12A270CW 4.5 270 (Lithium) 2.54 lbs; 1.15 kg
Chrome YTX12-BS 10 175 7.21 lbs; 3.27 kg
Chrome YTX12-BS iGel 10 180 7.78 lbs; 3.53 kg
Energizer TX12 10 180 8.8 lbs; 4.0 kg
ExpertPower YTX12-BS 10 8.86 lbs; 4.02 kg
ExpertPower YTX12-BS(iGEL) 10 190 7.5 lbs; 3.4 kg
Mighty Max YTX12-BS 10 180 8.4 lbs; 3.80 kg
Mighty Max YTX12-BS Gel 10 180 8.4 lbs; 3.80 kg
Mighty Max YTX12-BS 3.5 250 (Lithium) 1.0 lbs; 0.45 kg
MMG YTX12-BS 4.0 280 (Lithium) 2 lbs; 0.91 kg
PowerStar PS12-BS 10 180 9 lbs; 4.1 kg
Shorai LFX18A1-BS12 6 270 (Lithium) 2.19 lbs; 1.0 kg
SigmasTek STX12-BS 10 180 8.06 lbs; 3.65 kg
Weize YTX12-BS 10 210 7.06 lbs; 3.2 kg
Yuasa YTX12-BS 10 180 9.27lbs; 4.2 kg

Note: Amazon links (Model column) open in the new Windows, feel free to check them for the most up-to-date offers and prices.

Upgrade The Battery In Your Riding Mower or Tractor. CHEAP!

Although their capacity is relatively small, AGM and Gel-Cell YTX12-BS batteries are often used even in deep discharge applications, like small kayak trolling motor batteries for quick hops from one position to another, as a fish-finder battery, small inverter batteries, and similar.

Although starting AGM and Gel-Cell batteries are much more tolerant to deep discharges than wet/flooded starting batteries, they should not be used as such. a few cycles down to 50-80% DoD will not harm these batteries if they are soon after the discharge cycle recharged (preferably) using a Smart AGM/Gel-Cell battery charger.

Also, be aware that a semi-discharged lead-acid battery is unable to provide as strong starting current as a fully charged battery.

Best Group YTX9-BS Battery Equivalents and Replacements

YTX9-BS batteries feature physical dimensions of (L x W x H) 5.875 x 3.4375 x 4.125 inches (150 x 87 x 105 mm) and are used as starting batteries for small to medium-sized motorcycles, ATVs, riding lawn mowers, power generators, and other vehicles and appliances.

Lead-acid YTX9-BS batteries feature 10h capacity in the 6-10 Ah range and are able to provide 120-180 CCA Amps. Also, they weigh 6-9 pounds, depending on the model.

While wet/flooded lead-acid YTX9-BS batteries are being phased out in favor of AGM and Gel-Cell spill-proof maintenance-free batteries, lithium YTX9-BS batteries are becoming increasingly more present on the market.

Lithium YTX9-BS batteries’ typical weight is in the 2-3 pounds range, and they are able to provide 150-300 Amps for short periods of time, allowing them to easily crank/start gas and even diesel engines commonly found in small to medium motorcycles, ATVs and other Powersport vehicles and power generators.

The following cross-reference chart lists some of the most popular YTX9-BS batteries with their most important features and specifications:

Model 10h Capacity (Ah) CCA (Amps) Weight (lbs/kg) Review
Banshee DLFP9-BS Lithium Battery 8 150 (Lithium) 2.3 lbs; 1.04 kg
Chrome YTX9-BS iGel Battery 6 180 6.61 lbs; 3.0 kg
Chrome YTX9-BS Pirate Bay Battery 8 120 6.61 lbs; 3.0 kg
Deka Sports Power ETX-9 8 120 7 lbs; 3.17 kg
Energizer TX9 AGM Battery 8 120 6.75 lbs; 3.06 kg
EverLast CTX9-BS Battery 8 135 7 lbs; 3.17 kg
ExpertPower ETX9-BS Battery 9 180 6.04 lbs; 2.73 kg
Mighty Max YTX9-BS Battery 8 135 6.72 lbs; 3.05 kg
MMG YTX9-BS Lithium Ion 5 300 (Lithium) 2 lbs; 0.91 kg
MotoBatt MBTX9U Battery 10.5 8 lbs; 3.62 kg
NOCO NLP9 3 400 max. (Lithium) 2.29 lbs; 1.03 kg NOCO NLP9
NOCO NLP14 4 500 max. (Lithium) 2.58 lbs; 1.17 kg NOCO NLP14
PowerStar YTX9-BS Battery 8 9 lbs; 4.08 kg
Power-Sonic PTX9-BS Battery 8 120 7 lbs; 3.17 kg
SigmasTek STX9-BS Battery 8 120 6.19 lbs; 2.80 kg
UpStart UB-YTX9-BS Battery 8 6.5 lbs; 2.95 kg
Weize YTX9-BS Battery 8 135 6.16 lbs; 2.79 kg Weize YTX9-BS
Yuasa YUAM329BS YTX9-BS Battery 8 135 7.4 lbs; 3.35 kg

Note: Amazon links (Model column) open in the new Windows, feel free to check them for the most up-to-date offers and prices.

For smaller lawn mowers that feature the electric start of their internal combustion engines, AGM and Gel-Cell YTX9-BS batteries are recommended models. they are reliable and durable batteries that come at rather an acceptable price.

Lithium YTX9-BS batteries may lead to some weight savings, and they can offer even stronger starting currents, but such advantages are not of great importance for lawn mowers.

Best Group YTX5L-BS Battery Equivalents and Replacements

YTX5L-BS batteries are some of the smallest cranking/starting batteries commonly found in smaller motorcycles, power generators, entry-level ATVs, smaller outboard marine motors, etc.

Their physical dimensions are (L x W x H) 4.4375 x 2.75 x 4.125 inches (113 x 70 x 105 mm), and they are most commonly lead-acid batteries, although ultralight lithium batteries are slowly appearing in this battery size, too.

Despite their compact size, YTX5L-BS batteries are able to provide 70-130 CCA Amps, although there are manufacturers that claim even more CCA Amps.

The typical weight of AGM and Gel-Cell YTX5L-BS batteries is 3.5-4.5 pounds, while lithium YTX5L-BS batteries weigh just 1.0-1.2 pounds.

The following cross-reference chart lists some of the most popular YTX5L-BS batteries with their most important features and specifications:

Model 10h Capacity (Ah) CCA (Amps) Weight (lbs/kg) Review
AJC ATX5L 70 4.14 lbs; 1.87 kg
AMPXELL YTX5L-BS 3.5 210 (Lithium) 1.77 lbs; 0.80 kg
Chrome YTX5L-BS 4 70 4 lbs; 1.82 kg
Chrome YTX5L-BS iGel 4 70 4.05 lbs; 1.84 kg
Chrome YTX5L-BS Pirate Bay 4 70 3.7 lbs; 1.68 kg
Energizer TX5L 4 70 3.92 lbs; 1.78 kg
Everlast CTX5L-BS 4 80
ExpertPower YTX5L-BS 5 75 3.62 lbs; 1.64 kg
ExpertPower YTX5L-BS Gel 5 3.61 lbs; 1.64 kg
Interstate YTX5L-BS 4 80 4.77 lbs; 2.16 kg
MaxLithium YTX5L-BS 3.5 210 (Lithium) 1.76 lbs; 0.80 kg
Mighty Max YTX5L-BS 4 65 3.62 lbs; 1.64 kg
Mighty Max YTX5L-BS Gel 4 80 3.69 lbs; 1.67 kg
MMG YTX5L-BS Gel 5 (20h) 80 4 lbs; 1.82 kg
MMG YTX5L-BS 1.67 120 (Lithium) 1.07 lbs; 0.49 kg
Moskee YTX5L-BS 4 70 3.97 lbs; 1.80 kg
Neptune YTX5L-BS 5 (20h) 70 3.7 lbs; 1.68 kg
NOCO NLP5 2 250 max. (Lithium) 1.5 lbs; 0.69 kg NOCO NLP5
PowerStar PS5L-BS 4 145 4.5 lbs; 2.04 kg
PowerTex PTX5L 2.5 75 (Lithium) 1.1 lbs; 0.50 kg
SDULIBITIY YTX5L-BS 2 200 (Lithium) 0.84 lbs; 0.38 kg
SigmasTek ST5L-BS 4 80 4.14 lbs; 1.86 kg
TPE YTX5L-BS 3 200 (Lithium) 0.86 lbs; 0.39 kg
UPLUS EB5-3 4 80 3.97 lbs; 1.80 kg
Yuasa YTX5L-BS 4 80 4.2 lbs; 1.90 kg
Weize YTX5L-BS 4 125 3.38 lbs; 1.53 kg

Note: Amazon links (Model column) open in the new Windows, feel free to check them for the most up-to-date offers and prices.

Lead-acid YTX5L-BS batteries are maintenance-free, spill-proof batteries that are very resistant to vibrations and mechanical impacts and can last a long time when protected from overcharging and summer heat.

When disconnected from the vehicle, AGM and Gel-Cell YTX5L-BS batteries should be charged with Smart battery chargers with dedicated AGM/Gel-Cell charging modes with charging current in the 0.5-1.0 Amps range.

Also, such battery chargers, after recharging the battery, automatically switch themselves into maintenance mode, keeping the battery fully charged over a longer period of time. highly recommended when wintering the vehicles and appliances that use YTX5L-BS batteries.

lawn, tractor, battery, voltage, best

For the most up-to-date offers and prices, feel free to check the YTX5L-BS Battery Amazon link (the link opens in the new window).

Lawn Mower and Tractor Batteries Frequently Asked Questions (FAQ)

Here are some of the most common Frequently Asked Questions (FAQ) about lawn mower and tractor batteries and starting batteries in general.

What kind of battery do I need for my riding lawn mower?

Riding lawn mowers require small lead-acid or lithium starting batteries. exact battery size differs, so it must be checked for each lawn mower/tractor.

How long does a lawn tractor battery usually last?

A lawn tractor battery may last a few years, depending on the use and maintenance. if the lawn tractor is stored with the battery connected to the maintainer, such battery usually lasts a few years longer.

Is a riding lawn mower battery a 12-volt battery?

Most riding lawn mowers come with 12-volt electric systems, batteries included. But, just in case, check the Owner’s Guide of the lawn mower that You have.

How to charge a lawn tractor battery?

The lawn tractor battery is charged via an alternator connected to the lawn tractor engine. However, if the unit is not used periodically, it is a good practice to recharge the battery from time to time with a good battery charger and to store the lawn tractor with its battery connected to the battery maintainer.

Some smaller and older units don’t feature onboard battery chargers, requiring users periodically to recharge them using Smart battery chargers, usually in the 1-5 Amps range.

Such batteries should be recharged every 2-3 months or when cranking becomes difficult and slow.

Will a lawn mower battery start a car?

It depends on the size of the battery and the size of the car’s engine. Smaller lithium starting batteries will NOT start car engines since their BMS will disconnect the battery due to the too-strong current.

Smaller lead-acid batteries may even start a car engine, but that would be really too big load for smaller lead-acid batteries, shortening their lifetime.

Larger starting lead-acid batteries found in larger lawn mowers and tractors may start the car’s engine, although they are not intended for such use. it all depends on the battery size, its condition, CCA, and the size and type (gas, diesel) of the car’s engine, external temperature and similar.

Are tractor batteries the same as car batteries?

Tractor batteries and car batteries are of the same type and internal construction, but car batteries are generally larger.

P.S. yes, Yugo 45 is also considered a car, but its engine can be started with a larger lawn mower/tractor battery easily.

Can you use a car battery to charge a lawn mower battery?

If the fully charged car battery is connected to the discharged lawn mower battery (both batteries are of the same type/chemistry), some of the car’s battery charge will be transferred to the lawn mower battery.

However, initial charging currents can be rather large and may even damage the lawn mower battery.

If lawn mower/tractor battery charging is required, charge the lawn mower/tractor batteries using advanced battery chargers that monitor the battery condition and adjust the charging process according to the battery condition.

When should I replace my riding mower battery?

If the lawn mower/tractor features a battery charging system (alternator charge controller) and when:

  • the engine start becomes sluggish and slow,
  • the lights are dim,
  • the battery voltage is constantly around or below 12V with the engine Off,

it is time to replace the battery.

If the lawn mower/tractor doesn’t feature a charging system, take the battery out, recharge it completely and check how it performs. if it shows signs of a weak battery (slow and sluggish starts, dim lights, etc.), it is time to replace the battery.

Can you put a car battery in a lawn tractor?

Car batteries are generally too large for lawn tractors and cannot fit the lawn tractor’s battery compartment.

But, even if it is possible to put a car battery in a lawn tractor, don’t forget that too large battery can lead to alternator failure. whenever replacing the lawn tractor/mower battery, check the documentation that came with the unit and use replacement battery as recommended by the manufacturer.

Few Final Words

When looking for a new lawn mower replacement battery, be sure to match the old one regarding battery type/chemistry, size, terminal orientation, and terminal type.

Both the capacity and CCA rating of the new battery should be the same or better than the capacity and CCA rating of the old battery.

When wintering your lawn mower, check its Owner’s Guide regarding battery maintenance. if allowed by the lawn mower manufacturer, disconnect the battery (if there are no parasite loads, there is no need to disconnect the battery) and keep it charged using a Smart battery charger/maintainer.

During the summer heat, keep the lawn mower in the shade or preferably in the air-conditioned garage/storage room.

Note: internal combustion engines should be operated only in the open, not in garages, storage sheds, or similar, regardless of how good ventilation is. internal combustion engines produce colorless and tasteless Carbon Monoxide (CO), which is a very dangerous gas for humans and animals.

Also, these batteries often look like toys, but they pack quite a strong punch!

Whatever You do, stay safe!

Can A Bad Battery Cause A Lawn Mower To Stall? Let’s Explore

Do you experience your lawn mower stalls without warning while mowing? Probably, this problem occurs due to a bad battery. But can a bad battery cause a lawn mower to stall?

Yes, a bad battery can stall your lawn mower. Your lawn mower battery performance also affects lawn mower performance. You should test the battery; if found dead, charge it and start your lawn mower.

Stay tuned here; we will teach you how to diagnose a dead battery if your mower stalls while mowing. Let’s come to the main discussion.

Can a Bad Battery Cause Your Lawn Mower to Stall?

Yes, if your lawnmower stalls, a bad battery can be a reason. If you have a bad battery, you may experience the following issues that lead to the engine’s stall.

You may face hard times when starting the lawn mower. Sometimes it suddenly loses power and your lawnmower stalls. Bad batteries take more time to charge or cannot charge fully.

If they charge, they quickly down the cells and you may experience interrupted service. You have no solution other than replacing the bad battery with the new one.

How to Diagnose a Lawn Mower’s Bad Battery?

It is pretty simple to check and diagnose the lawn mower’s bad battery. It is not a complicated process that may be completed in three to four steps. Let’s come to the process.

Things You Will Need:

  • Adjustable wrench
  • Latex or plastic gloves
  • Safety glasses
  • Digital Multimeter

You should have a Klein Tools MM300 Multimeter. It will ensure accurate voltage and is simple to operate. The multimeter is compatible with both AC and DC.

Step 1-Park Your Lawn Mower on a Flat Surface.

Park your lawn mower onto a flat surface and switch off the engine. Allow your lawn mower to cool for a few minutes. Wear safety gloves and glasses to ensure safety during work.

Step 2- Off the Lawn Mower Seat

Now off the lawn mower seat because the lawn mower battery is located under the seat switch.

Step 3- Remove the Lawn Mower Battery.

When you access the battery, unplug the battery from the terminals and pull it to remove it from the lawn mower. You can easily pull it.

Step 4- Connect the Digital Multimeter to the Battery.

Connect a digital multimeter to the battery to check the battery voltage. Connect the red pin of the digital multimeter with the positive terminal and the black pin with the negative terminal.

Your battery volts should be 12.5 volts. If it is less than 12.5 or at a danger level such as 1 or 2, it means your battery is close to dead.

The volts are only 1.97; your battery is near dead.

Step 5- Plug the Battery Into the Charger

Plug it back into the charger to confirm low battery voltage or bad battery issues. Leave it for 20 minutes to charge.

After 20 or 25 minutes, please remove the battery from the charger and test it again. If your battery has a low voltage issue, it will complete its voltage up to12.5 in 20 minutes.

But your battery is bad if you see the voltage is lower than 8 volts. If your battery is dead, you will need to replace it with a new one.

How to Troubleshoot Bad Batteries That Cause a Lawn Mower to Stall?

Follow the steps below to troubleshoot bad batteries that cause a lawn mower to stall. Let’s see.

Step 1- Disconnect the Battery from the Power Source

First, check the key and ensure the key is not in the ignition. And then disconnect the negative terminal of the battery.

Step 2- Connect with a Multimeter.

Connect the battery to the terminal and check the voltage; it is 1.48, which means we have a drain on the battery. It is pretty close to zero.

Step 3- Backtrack the Electrical System.

To track the electrical system, start with unplugging one at a time until it goes to zero. Pull the fuse and perform the test; if it is zero, it is good.

Step 4- Disconnect the Power.

Then disconnect the power to the mower by removing the fuse.

Once you have removed it, test it again with a multimeter; when tested, it is zero.

Zero on the multimeter shows that drain is happening on this side.

Step 5- Test the Voltage Regulator.

Plug that back at the drain to check the voltage regulator. Disconnect the terminals one by one to test the voltage regulator. When checked, we find it is zero.

It means the drain is because of the voltage regulator, and you should replace it before replacing the bad battery with a new one.

How do I Extend my Lawn Mower Battery Life?

The most common cause of a bad battery is corrosion or irregular charging. So you should adopt the wise ways to keep your lawn mower battery in good health.

  • Do regular cleaning and make sure there should be no corrosion, especially around the battery terminals. If you need to store it, store it in dry and clean places.
  • Do not keep your lawnmower battery for a long time on charging. Unplug the battery when it is charged. Never allow your battery to go under 40 percent charging.

Following these tips will not just extend your battery life but also minimize battery issues.

Frequently Asked Questions(FAQs):

Can a bad solenoid be a cause of a bad battery in your lawn mower?

No, no worry about the bad solenoid; it does affect your lawn mower. You may experience some other issues, such as trouble starting the engine or inconsistent speed while mowing, but no issue with the battery.

What are some common reasons for a bad battery?

If your lawn mower voltage regulator is faulty or battery posts are corroded, it will make a battery bad. So check the voltage regulator and battery posts before replacing the battery.

How often should I charge my lawn mower battery?

Charge the lawn mower battery whenever you need. If you see the battery is below 40 percent, plug the battery into the charger.But do not allow it for a longer time. The average charging time for a lawn mower battery is not more than an hour.But before charging the battery, read the instructions manual on the battery and charger for proper charging.Charging the battery fully before storing it in the off-season is also essential. If you store a dead battery, it will be corroded or become dead.

Can you start your lawn mower with a bad battery?

No, you cannot start the lawn mower with a bad battery. It is only possible when you jump-start your lawn mower by connecting with another power source. You can connect a bad battery to the car battery or jump starter to start.

What happens if you overcharge the lawn mower battery?

It will overcharge if you keep your lawn mower battery plugged into the charger for a long time.It will cause decomposition of water in the electrolyte and premature aging. Your battery will become overheated and may melt.

Final Verdict

Smooth lawn mower performance is only ensured when you have a battery in good condition. Bad batteries produce inconsistent performance; they may stall your lawn mower. You can test the bad battery with a multimeter to replace it with a new one.


Can You Jump Start a Riding Lawn Mower with a Car? Guide with pics

A flat battery must be the most common riding mower complaint. It’s so annoying to hear the click, click, click. Let’s get it figured out right now!

So, can you jump-start a riding mower with a car? You can jump-start a riding mower with a car. Most mowers operate a 12-volt system. Put the jumpers on in sequences 1, 2, 3, 4, and start your mower. With the mower running, remove the jumpers in reverse order 4, 3, 2, and 1.

Not sure you have a 12-volt system – check the battery details on your mower. A sticker or stamp on the casing of the battery will indicate the voltage.

Common locations for batteries to be found – are the underhood, under-seat, under-drink holder, behind-the-wheel, and lots of other hard-to-find places.


Before attempting to jump-start, check that the battery is secure and not leaking. Leaking battery acid will burn your skin, so if the battery is wet, use gloves and eye protection. Check also that the terminals are secure and not damaged. Damaged or loose terminals will cause arcing and prevent power flow to the starter.

Dirty Battery Terminals

If your battery posts are dirty, clean them before jump-starting. First, kit yourself out with protective eyewear and gloves. It will look like a white crusty build-up on the terminals and battery posts.

Dirty, corroded, or loose terminals create resistance to the flow of power from the battery to your starter and, in return, prevent the recharging of the battery by the alternator.

Sprinkle some baking soda on the terminals and add a small amount of water. This will neutralize the acid and remove the corrosion.

Use a wire brush to clean the surface. Now remove the terminals and clean around the poles and the terminals. Apply a coat of petroleum jelly to help protect against corrosion.

Cleaning The Battery Terminals

Battery terminals (connections) often come loose because of mower vibration, and as you know, corrosion is also common. If your battery terminals are damaged or badly corroded, replace them. Damaged cables may have broken wires within. This causes excessive resistance.

Often you may notice the cables getting very hot while you’re attempting to start the mower. This is a sign of high resistance. Replace with good quality leads and terminals.

Cables – Damaged, worn, or dirty cables will mimic a flat battery. Always check battery cables and terminals before condemning the battery.

Jumping / Boosting Your Mower

The jump/Boost start procedure is very simple; obviously, you’ll need a set of booster cables. If you need to buy boosters, buy a good quality set. Poor quality cables won’t make a good connection and make the whole job a lot more difficult.

I recently bought a set of Cartman boosters recently. I like cables that remain flexible in cold weather and jaw clamps that grip firmly, my guess is I’ll have the years, but I’ll keep you updated, and if I like them, I’ll post a link on the “Small engine tools page.”

Connecting Jumpers

Battery poles are sometimes colored red for positive and black for negative. However, batteries will definitely be marked for positive and (-) for negative. You may need to clean the battery a little to find the markings.

Battery post markings – Look out for positive and negative markings on the battery casing.

Move your vehicle close to the mower and pop the hood to access the battery. You will likely have to remove a plastic shield from the car battery terminals.

Simply match the color and polarity of the leads. Always begin by fitting the Red jump lead to both battery poles first, but it’s all covered below. Just follow the sequence, and you’ll be mowing in jig time.

Jump Start Preparation Jumper Sequence

A ground source is any bare metal. There are always a ton of good places on the engine to clamp to. Clamping the final clamp to the battery negative pole isn’t advised. Doing so may cause arcing, which could ignite battery vapors. It’s a small risk, but it is possible.

Check – All modern mowers run a 12-volt system, and it’s perfectly OK to jump-start from your car. If you are unsure, check the battery casing, it will be marked 12 volts (V).

Tight – Mower blades and engines cause a lot of vibration, and bolts come loose from time to time. Check both connections. Positive red and negative black (-) are clean, tight, and in good condition.

Jumpers – Use good quality jump leads. These are my old worn-out ones.

Connect – Start by connecting the positive red of the mower (1) to the red of the car (2).

Now connect the negative black (-) on the car (3) to a ground (GRD) source on the mower (4). (Any bare metal will work)

Start – After starting the mower, allow it to run for a couple of minutes while still connected.

Remove the jumpers in reverse order, 4, 3, 2, and 1.

Mower Just Clicks

If you tried jump-starting your mower or the battery tested OK, then you may have a starter solenoid fault. These guys give lots of trouble, so it’s highly likely, but it’s not the only possible cause of the click sound. Check out this simple, easy-to-follow guide, we’ll test the solenoid, and I’ll show you the other common causes of the click sound – “Won’t start just clicks.”

Mower Won’t Start No Click

If you tried jump starting or the battery tested OK, but the mower makes no sound at all when you turn the key – You may simply have an open safety sensor, like not sitting on the seat or brake pedal not pressed, or you could have a more complex issue.

Anyway, I wrote a guide to help you find the problem. Check out all the most likely causes here “Mower won’t start – no click.”

Tractor Battery Function

The function of a lawn tractor battery is to start the engine. Once started, the alternator then produces the power required to run electrical systems and recharge the battery. Batteries are designed to give, receive and store electrical power.

A strong, healthy battery is critical to starting a lawn tractor mower. A mower engine only creates enough energy for the spark plug to fire if the engine cranks over fast enough, min 350rpm. So if your mower cranks but won’t start, try jump-starting to eliminate the possibility of a faulty battery causing a slow crank speed.

Once the engines are running, a bad battery isn’t so important. That’s why a mower with a bad battery still runs after you remove the jumper leads. See crank testing the battery below.

Battery Testing

Checking for a full 12.65 volts on a battery at rest is fine for giving you an indication of the state of charge, but it’s not a guarantee that it’s OK. To test a battery for faults, it needs to be loaded, and by loaded, I mean worked hard.

  • 100% charged is 12.7 – 13.2 volts
  • 75% charged is 12.4 volts
  • 50% charged is 12.2 volts
  • 25% charged is 12.0 volts
  • Discharged (Flat) 0 – 11.9 volts

The fast and easy way to check the battery is to use a voltmeter set to 20 volts DC.

I’ve listed a voltmeter on the tools page. It’s a good meter you’ll have for years that won’t break the bank “Small engine repair tools.”

Battery Crank Test – To test a battery, it needs to be loaded with a voltmeter set to volts DC, red to red, and black to black. Have a helper crank over the engine. If the meter drops below 9 volts, the battery is faulty.

Charging System Test – If you have a voltmeter, checking your charging system is easy. With the engine running, set your meter to volts DC and connect the red to red and black to black. Any reading above 12.65 volts means your charging system is OK.

What Battery Type

There are many different types of batteries, wet, gel, and AGM…. Let’s keep this simple.

Don’t buy a wet battery; you’ll know a wet battery – has fluid top-up plugs across the top of the battery. These batteries leak and are usually all over the connectors causing corrosion. It needs to be topped up regularly, and if you don’t, you’ll kill it and void the warranty.

They can’t be stored indoors safely. It can’t be shipped with acid, so if you buy it online, you’ll have to go to an auto store and buy acid. Then using suitable gloves, eye protection, and a mask (because this stuff is nasty), fill the battery cells individually, careful not to overfill them.

Now you’ll need to charge the battery, so you’ll need a charger, back to the auto store……

Instead, buy a sealed battery; they’re easy to handle, have no risk of leaks, no topping up of electrolytes needed, and can be shipped and arrive locked and loaded. Check out the Amazon link below for great deals on mower-sealed batteries delivered to your door already charged and ready to roll.

12 Volt Battery

A typical lawn tractor battery is 12 volts. They are made up of six individual cells, each producing 2.10 volts. This makes a total of 12.65 volts when fully charged; however, referred to as a 12-volt battery. Within each cell are opposing lead plates of cathode and anode submerged in an electrolyte. The chemical reaction of these opposing lead plates causes electrons to flow – producing electricity.

Check Your Battery Shape

Batteries are classified by the shape, size, and orientation of posts and are given a group code, such as U1R. This code will be marked on the battery. If you get this wrong, the battery would still start the mower OK but may not fit in its location, or the leads may not reach the battery posts.

If you don’t want to mess around with codes, just measure the battery height, width, and depth, note which side the posts are and if they are negative or positive. Go online, and you’ll be juiced up in no time.

How Many Amp Battery?

The bigger your mower engine, the more amps will be required to turn that engine over. The output of the battery is very important. When diagnosing electrical systems and thinking about Volts, Amps, and Resistance within that system and how they all relate to each other, I find it helpful to think about energy as water in a garden hose.

  • Volts are the water pressure in the garden hose.
  • Amps being the water flow rate from the garden hose
  • Resistance is the size of the garden hose


A single-cylinder lawn tractor starter motor will draw 80 – 100 Amps when starting the engine. The more mechanical resistance in the engine, the larger the draw.

For example, in cold weather, when the engine oil is thicker, it’s harder for the starter to turn the engine, and so it draws more energy (amps).

Excessive Amp Draw

A starter pulling excessive amps will mimic a flat battery. The reasons a starter pulls excessive amps vary; common among them include:

  • Excessive valve lash
  • Hydro-locked engine
  • Faulty starter motor
  • Over full oil level
  • Oil too thick
  • Internal engine damage

Measuring amp draw is simple. However, you will need a clamp meter.

A typical lawn mower battery will be amp-rated and marked on a sticker 12 V – 32 Ah – 280 A.

12 v = 12 Volts32 Ah = Means this battery can supply 1 Amp for 32 hours (1 Amp would be equivalent to a small light)280 A = Max amount of Amps available

Other common reasons for a larger amp draw: are worn starter motor; binding starter motor; engine damage; engine hydro-locked; overfull oil level; wrong oil type; valve lash off; failed compression release assembly.

Many of these problems are on the spendy side to repair, so it may be time to assess the overall condition of the old girl before spending money, it may be time for a new set of wheels.

How To Charge Mower Battery

To charge your riding mower battery, you will obviously need a battery charger. You don’t need to remove the battery from the mower, but you will need to remove the black negative (-) cable terminal connection.

Your mower may be fitted with a sealed, maintenance-free battery or a regular lead-acid battery; both can be charged with a normal charger.

I prefer to use a Smart charger; they’re safe to leave on your mower all winter and can also be used as a normal battery charger.

Totally Flat Battery Charge Hack

If your battery is fully discharged, the battery charger will not charge it; it’s designed that way. To hack this, we need to fool the charger, simply connect the flat battery to a charged battery with jump leads in the normal way, then connect the charger and charge.

The jump leads, and donor battery can be removed after an hour.

Wet Battery Charging

A regular lead-acid battery will have a fluid level indicator and removable cell caps, as per the pictures below. A wet battery will need the cell caps removed and the fluid level checked before charging.

Top up with distilled water or rainwater caught in a plastic container. Do not fill past the max level. If you find any of the cells dry, then it’s likely the battery is junk. Advise using protective eyewear and gloves.

Sealed Battery Charging

The sealed battery is much less work; you only need to remove the negative terminal before charging (you don’t need to disconnect it if using a Smart charger). You’ll recognize a sealed battery; it won’t have the fluid caps or fluid level indicator.

1 Volt – A fully charged 12 v battery reads 12.65 volts. Any reading below 12.4 means the battery needs a charge.

2 Remove – Before charging the battery, remove the negative terminal. No need to remove the positive terminal.

3 Fluid – If you have a regular lead-acid battery, you will have a fluid level mark. Check the level; it can be seen through the casing.

4 Top Up – Remove all plastic caps. Top up with distilled water or rainwater caught in a plastic container. Fill to the max. Use safety glasses and gloves; ACID WILL BURN CLOTHES AND SKIN

5 Sealed – You don’t need to remove a battery to charge it, but sometimes removing it can be easier. A sealed battery is maintenance-free; just disconnect the negative wire and charge.

6 Charger – The charger is connected red to positive and black to negative, as per the picture. Charge time – about 2 hours.

What Is A Smart Charger

Consider buying a Smart/trickle charger; these chargers are connected to your mower when not in use. They put out a low amp charge of 1 to 3 amps which maintains your battery.

I treated my own tractor mower last year to a new Smart charger; I bought the Noco Genius Smart charger; you can check it out on the “Small engine tools page,” I’m very happy with it so far, it’s simple to use and works on all battery types, but I’ll keep you posted.

Trickle Chargers

There are different types of trickle chargers:

  • Manual, which needs to be turned on and off.
  • Smart auto charger – turn themselves on and off as the battery requires.
  • The hybrid version will double as a high amp charger when needed.
  • Solar trickle versions are also available.

Using Trickle Charger

Connecting them is simple, pop on the color-coded crocodile clips and plug them in. This leaves you with a fully charged battery every time you turn the key. Batteries work best and last longer when their state of charge is maintained; off-season charging is always advised.

How Long to Charge Mower Battery?

This will depend on the size of the battery, how depleted that battery is, and the type of charger you using. There are fast chargers, trickle chargers, and Smart chargers; all will vary in charge time. Usually, 3 to 4 hours is enough for most chargers to lift a flat battery.

Amp Rating

Chargers are amp-rated, so, for example – the mower battery is a 32 amp-hour (Ah) and totally flat. Using a 10 amp charger to fully charge it will take approximately 3 hours.

The Hybrid Smart chargers are the best and, of course, are more expensive; they are designed to charge and maintain your battery when the mower isn’t in use. They will turn off and on as needed.

Related Questions

Do riding mowers charge the battery? Yes, all riding mowers have a battery charging alternator and regulator; they monitor and charge the battery when the engine is running.

Can I use a car battery in a lawnmower? Yes, you could use a car battery to start a riding mower, but car batteries are much larger, and so may not fit in the mower battery tray.

How Long Does It Take To Charge A Lawn Mower Battery?

Do you know how long it takes to charge a lawn mower battery in 2022? Well, you will find out in this article today.

Gas and push-powered lawn mowers, being the only option for a while, have come quite a long way. Mowers powered by gas have evolved in recent times, and so have their battery-powered counterparts which are growing in leaps and bounds.

Several devices such as lawnmowers, trimmers, tillers, weed whackers, and chain saws, which used to be mainly gas-powered, now come with battery power options.

And the merits are there for everyone to see; because not only are battery-powered lawnmowers cost-effective, but they are also easy to maintain. So, if you have a battery-powered lawnmower or are planning to purchase one, you are really in for a great time.

One important question that may be on your mind regarding a battery-powered lawnmower is “how long does it take to charge a lawnmower battery?” Overcharging, just like undercharging, is one of the surefire ways to destroy your lawnmower battery. And since the efficiency is directly dependent on the battery, you cannot afford to take chances, as far as charging the battery is concerned.

Lawn Tractor Battery Test

You need to know some basic maintenance tips to preserve your battery life, and don’t bother yourself, because, in this piece of content, we have explained every single detail you need to know about your lawnmower battery. Let’s go!

Lawnmower Battery Charging Times

The outset of summer comes with a need to get your lawnmower out, so your yard can be kept properly manicured. If your mower was stored throughout the colder months, chances are that the battery would have drained, and you want to get the battery charged throughout the season so that you can finally run your mower on the lawn.

A regular lawnmower that is fully charged will last for an average of one hour. Charging a lawnmower fully, especially with a trickle charge, is more time-consuming, but will downturn the battery’s charging frequency, and will ultimately enhance its health.

Looking after your lawnmower’s battery will maintain its life, but there are several factors involved in charging it. Consideration of your lawnmower’s battery, you must realize, is as important as that of the lawnmower itself.

The next section of this article talks about the things that affect your lawnmower charging time.

What Affects My Lawn Mower Battery Charging Times?

3 important things can interfere with your lawnmower’s battery charging times;

  • The voltage of the battery
  • The required amps to get it charged
  • How often do you use it

These 3 things will affect how long you need to charge your battery. To have a better understanding of your battery, and the way it charges, you need to know how voltage and amperage work.

The Battery’s Voltage

Every battery comes with two terminals; positive and negative electrical charges. The voltage is the difference between the potentials of the two terminals.

The voltage your lawnmower’s battery dissipates will affect how long it has to charge, and how long it stays on in between charges. Your lawnmower battery’s voltage is dependent on the following three (3) factors;

  • The size of your mower
  • Your mower’s production date
  • How often do you use your mower

Eighty percent of lawnmowers use a 12-volt battery. This voltage is ideal for lawnmowers because it can get the machine working while forestalling the occurrence of shocks to the owner, and it can last for some hours of use.

Lawnmowers whose production dates as far back as 1980 will probably utilize a 6 voltage battery, and that has a briefer charge and usage time.

Does Voltage Affect Charging Time?

Are you asking if voltage affects charging time? Yes, it does. Here’s why and how; your mower battery’s charging time depends directly on the voltage, and for every voltage, you have to charge the battery steadily to keep it healthy and efficient.

If you like your battery to last longer, overheating and overcharging are two danger zones you should strongly avoid. Here is where trickle-charging your battery comes into play; it enhances your battery life while also sliming the tendency of your battery to overheat, and overcharge.

While a 6-volt battery can take up to close to six hours to charge, a 12-volt battery can take up to 12 hours to charge, all depending on how much it has been consumed in between charges.

What Role Does The Amperage Play In Charging?

Another key factor involved in your lawnmower’s battery charging time is its amperage. What is amperage? It is the intensity of the currents measured in amperes, which is also known as “amps”. What the amps do is, measures the current that charges the lawnmower’s battery.

The typical charger for your lawnmower’s battery comes with a current of roughly 10 amps. This being a lower current, your battery will take longer to charge, compared to a higher current. But there’s a reason this current is recommended; to protect your battery life.

Some chargers will charge your lawnmower battery at a current of 20 amps, which will reduce its charging time. The con of output as large as this is; that it can damage the battery, especially if it goes through regular use.

7 amps current or less is easily the best; of course, your battery will take longer to charge, but will, at least, be able to last long.

If you are charging your battery at 6 or 7 amps, you should be able to use it within one hour. To increase or decrease the current will be to extend your battery’s charging time.

lawn, tractor, battery, voltage, best

Do you see why a 7 amps charger is the best? Not only does it aid your battery’s life by down-turning the current, but it also gives it a faster charge time than lower amperes.

The Frequency Of Use

How often you operate your lawnmower can directly affect the duration your battery needs to charge. While your battery may stay charged while in storage, there is a counter tendency for it to drain, even though it is not necessarily in use. If you did not use your lawnmower all winter, chances are that you may not be able to power it immediately.

Some battery drainages are not out of place, especially if it is not connected to major issues such as;

  • Leaving the mower powered
  • Keeping keys in the ignition
  • Age-related current draw

If you leave your mower keys in the ignition, you could run the risk of forgetting to turn the mower off, and the mower can also be left in standby mode. What you would be doing, in this case, is channeling extra power away while you think it is stored.

One way to avoid this is by double-checking to ensure that the keys are off the ignition, after using the lawnmower. Another thing you may want to confirm is that there is no unneeded current draw when the lawnmower is deactivated, as older batteries tend to lose charges pretty much faster.

If your battery consistently drains quite quickly, you might want to consider getting a replacement. A working battery will conserve most of its charge, and without an occurrence of excessive leakage. The more your lawnmower leaks, the terrible the battery’s condition becomes.

The Lawnmower’s Run Time

There is a cordial relationship between how long your lawnmower stays on, and how frequently your battery needs to charge. Batteries with larger capacities take longer to charge but can run in between charges. Your lawnmower’s battery run time is intimately connected to both the age and voltage.

Charging a lawnmower battery full will take longer than charging it for one-off use. The higher the battery’s voltage, the longer it takes to get it charged to its full capacity.

It is why the 12-volt battery is the cream of the crop for ninety percent of all lawnmowers. And here is what it does; it offers a fantastic balance between how long it runs, and how long it charges. You won’t spend as much time charging it, as you will, using it.

Why Is My Lawnmower Battery Life Draining?

Did you notice your lawnmower’s battery life draining of late, and are wondering just what could be wrong? Here is it.

Your battery’s life can remain draining, especially if there is a faulty battery connection due to poor or corroded terminals, and loose cables. Other causes of draining are, leaving your ignition key on, and a faulty charging system; all of which can impair your battery’s life.

How Can I Make My Lawnmower Battery Long-Lasting?

Here is a fun fact about lawnmower batteries; they can last for as long as possible, and do not take lots of maintenance to be durable. Highlighted below are 3 things you want to keep in mind if you want your lawnmower battery to last pretty long:

  • Switch it properly
  • Use the recommended voltage for your lawnmower
  • Keep it away from corroded substances and materials

To get your battery properly charged, using a lower amperage is better. It is safest to charge the battery at seven (7) amps, and if you want to increase your battery life much more, you can go for lower amps.

A higher amperage can, of course, charge your battery faster, but you cannot afford the serious damages it will do to it. Hence, resist the urge to go beyond 7 amps.

Another thing you want to be sure of is your battery’s voltage, and if it is precise for your lawnmower’s use. It is wise to make use of the battery recommended by your lawnmower’s manufacturer. Most lawn mowers function on a 12-volt battery, though.

To keep your lawnmower’s battery in use, you want to keep it away from corrosion and corroded materials. All that is needed to corrode a battery, and consequently terminate its life, if caution is not taken is; the combination of the gases from the battery and high temperatures. But there’s a way out; you can get rid of corrosion by simply applying a wire brush to the affected parts.

Can Your Lawnmower’s Condition Affect The Battery Life?

Yes, it can. Taking proper care of your lawn has a positive influence on your battery. And how do you take proper care of your lawnmower? By running a regular check-up on the engine, and the blades, and keeping an eye out on the battery condition itself.

What you would be doing by taking care of the whole machine is, extending your lawnmower’s battery life, while also sparing yourself the dollars you could have spent on repair or a replacement.

Highlighted below are some of the tips you need to care for your lawnmower, and by extension, its battery life;

  • Keep your blade sharp
  • Keep your lawnmower properly as the weather demands
  • Do not mow wet grass
  • Do not run over big debris in your yard

How Trickle Chargers Work

A trickle charger is an awesome alternative to regular chargers, which will deliver a current of up to 10 amps to the battery. As for trickle chargers, they will charge your battery very slowly, but will protect it in 3 ways;

  • Preventing overcharging
  • Disallowing the battery from draining
  • Protecting the battery from temperature and sulfate hazards

These kinds of chargers deliver 1-3 amps to your 6/12 volt lawnmower battery and are mostly automatic. As soon as you attach the charger, it will pick your battery’s voltage and charge level to maintain it.

The charger will, from there, take care of the battery. To charge your lawnmower battery full will take close to 24 hours on a trickle charger.

Bottom Line

Everything begins to change the moment you understand that the condition of your lawnmower can make or mar the battery life. One important way to maintain this battery is by charging it.

And here is where basic tools like trickle chargers come into play. All you have to do is connect it, and it does the rest of the work for you.

If you want to know how long charging your lawnmower battery will take, simply read through this article. Cheers.