Right now, pick up a power tool and batteries for only 99.
By Perri Kressel | Updated Jul 13, 2023 5:14 PM
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The summer savings are already going strong at The Home Depot, with incredible deals on items like outdoor tools, patio furniture, and appliances. Time is running out on one of their best deals: The retailer’s Ryobi Days Deals promotion on battery-powered tools ends on July 17, 2023. For a few more days, you can get a bare 18V Ryobi tool with your purchase of a One Starter Kit (two 4.0 Ah batteries and a charger) for only 99.
Choose from 23 bare tools—including this impact driver, plunge saw, and planer—ranging from 39 to 189 in value. Whether you’re expanding your tool collection or kickstarting your newest home improvement project of the season, this 99 deal is hard to beat.
Need help deciding which tool to pick up for free? Our experts have tried on several for size. Check out our thoroughly vetted buying guides on the best impact drivers, jigsaws, power scrubbers, cordless ratchets, and more, where we’ve consistently rated Ryobi as one of the best tool brands out there for the money. But hurry, because these popular power tools have already sold out!
Get a free Ryobi 18V power tool with a One 18V battery set (save up to 189) at The Home Depot
The listed here are accurate as of publication on July 13, 2023.
How to Tell if Your Battery Is Bad in 3 Easy Steps
Having battery troubles? Yeah, we hear you. Almost everyday, we receive calls and Комментарии и мнения владельцев about batteries that won’t hold a charge any more. Maybe you’ve been in that boat before. To clear up a misconception: a battery isn’t like a water bottle. You can’t use up half now, and then wait and use half later. It’s not a tank of electricity. Also, batteries don’t leak power like water can. What we’re dealing with is a lead acid battery in a plastic box that encases a delicate balance of chemicals which are ready to interact with each other to produce electricity when the load is applied.
If your battery is having trouble holding under load, then chances are it’s a chemical issue.
How to test a battery:
1) Inspect the Battery
Sometimes you can tell if your battery is bad by simply taking a good look. There are a few things to inspect:
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- Broken terminal
- Bulge or bump in the case
- Crack or rupture of the plastic
- Excessive leaking
Broken or loose terminals are dangerous and can cause a short circuit. If a short did occur, there would be some indication of burning or melting. When a battery short circuits, all the power is unloaded in an instant. That produces a lot of heat, and sometimes even causes the battery to explode.
If the battery is still intact, but there is a bulge in the case, this is usually a result of being overcharged. Other signs such as physical openings in the case are often caused by mishandling. Cracks, splits, and holes will not cause a battery to stop working, but for safety reasons the battery should be labeled unsafe to use.
With wet-cell (flooded) batteries, water levels must be maintained. If they are low, usually refilling them with distilled water will help. But, if the cells within the battery have been exposed to air for a long time, it can cause a problem. When the plates within each cell are exposed to oxygen it can rapidly dry the paste that surrounds the lead plates. When the paste has dried it creates a barrier that prevents the chemical reaction within the battery. This can also cause the sulfation that has already occurred to harden leading to a sulfated battery which is the number one cause of early battery failure. We strongly recommend checking the water levels prior to charging a wet cell battery since charging a dry battery will burn it up. If your battery has plenty of fluid in the cells, but the color is dark, or brownish, this is also an indication of a bad battery. Even if one cell is brown, it is rendered useless and therefore the entire battery is, too. Time to replace your battery!
2) Take a Voltage Reading
The voltage of a battery is a good way to determine the state of charge. Here’s a handy table with the breakdown:
|State of Charge||Voltage|
- Reading 0 volts, chances are the battery experienced a short circuit
- Cannot reach higher than 10.5 volts when being charged, then the battery has a dead cell
- Fully charged (according to the battery charger) but the voltage is 12.4 or less, the battery is sulfated
Sulfation is the natural byproduct when the battery discharges. Naturally, re-charging the battery will reverse the sulfation crystals and turn it back into electrolyte, ready to produce power again. But if a battery sat, uncharged, severely discharged, and/or drained for extended periods of time, the sulfation will increase in size and harden onto the plates. This covers the surface area of the plates, removing the chemicals needed to produce power.
Sulfation decreases the potential to reach a full charge, and it self-discharges the battery quicker than normal. Charging a sulfated battery is like trying to wash your hands while wearing gloves. At this point, charging alone will not restore the battery to a healthy condition. The majority of replacement battery purchases occur when the original battery has reached this point.
3) Load Test the Battery
Your local automotive shop is more than able to load test your battery, but it’s quite easy to do at home and all you need is a digital voltmeter. For any load test to be accurate, the battery must be fully charged and left to sit 12 hours before load testing the battery. A recently charged battery will hold a residual charge from the charger, so letting the battery sit for 12 hours will release that residual charge and give you a more accurate sense on how the battery will perform under normal circumstances. To the test.
Let’s use a motorcycle battery for an example:
- Remove the seat and expose the battery in your bike so that you have access to the terminals. Do not disconnect the battery because you will attempt to start the bike.
- Hold the prongs of your voltmeter to the correct terminals on the battery.
- Now push the start button and watch what the voltage drops to. It doesn’t matter if the bike starts or not, what you’re looking for is a voltage reading.
A healthy 12 volt battery should maintain a voltage range from 9.6. 10.5 volts under the load for a good 30 seconds straight.
For starting batteries we don’t expect you to run the starter for 30 seconds, so if you see the voltage meter drop within the voltage range and it sounded like a good strong start, then you probably just had a discharged battery. However, if under the starting load the voltage drops below 9.6v, then it is most likely time to replace the battery.
For deep cycle application if the battery holds under load for a few seconds then voltage starts to steadily drop this would indicate a problem with the battery. If the voltage instantly drops to 0 volts, that is also a problem. We call this the open cell. On a new battery, this can be a result of manufacturing flaws, but it also may be caused by sulfate crystal buildup.
A common occurrence with open cell batteries is that under the intense heat of the load, one or more of the weld pieces connecting the cells together is coming loose and separating. This will cut the current, and voltage will drop. When the battery cools off, the pieces will touch, barely giving a complete connection. This gives you a false voltage reading. Batteries with open cells may read fully charged in idle, but they fail under a load test every time. Once a battery reaches this point, there is no going back. The best thing to do is recycle the thing.
How to tell if a battery is bad or good: These 3 steps will help you test and determine if your battery is truly bad or getting there. Sometimes it’s obvious if there is a failure, but other times it’s not. Flooded batteries make it possible to simply look inside the cells and determine if the battery has a physical defect. But for sealed AGM and Gel batteries, it requires testing. The only tools you really need are a battery charger and a digital voltmeter. If your battery experiences any of the symptoms described in the steps above, then maybe it’s time to replace the battery.
Look no further. We’ve got a wide selection of powersports batteries for your motorcycle, ATV, scooter, jet ski, or snowmobile. But we also carry batteries for lawn mowers, wheelchairs / mobility scooters, UPS systems, RVs, and marine applications. Whether you need a starting battery or a deep cycle battery, we have the stuff. And all of our replacement batteries come with warranties to ensure that you won’t have any of these problems with your new battery.
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Written on June 5, 2012 a 3:20 pm by Staff with BatteryStuff.com Modified on December 6, 2021 a 2:56 pm How to Tell if Your Battery Is Bad in 3 Easy Steps
The 8 Best Battery-Powered Lawn Mowers of 2023, Tested and Reviewed
Sage McHugh has written for Dotdash Meredith since 2019. With over a decade of experience in consumer-oriented content, Sage has a passion for products and how they enhance our everyday lives.
Andrew Hughes is a certified arborist, member of the International Society of Arborists specializing in tree heal care, and reviews tree content on The Spruce’s Gardening Review Board. He founded and runs Urban Loggers, LLC, a company offering residential tree services in the Midwest and Connecticut.
Jenica Currie is an expert content manager, producer, writer, and editor with over a decade of experience cultivating online communities.
Cordless and environmentally friendly, a battery-powered lawn mower is generally easier to maintain and operate than a gas-powered model, and it is especially suited for small to medium-sized lawns. “The best battery-powered lawn mower for your yard is one that suits your specific needs,” says Kris Kiser, president and CEO of the Outdoor Power Equipment Institute (OPEI). He suggests asking yourself the following before selecting a mower: “What is the size of the property and job? What features are needed for the job? What is your ability to handle the machine?”
We researched and tested a variety of lawn mowers in our own yards including corded, cordless, gas, electric, push, riding, and self-propelled options. For this list of the best battery-powered lawn mowers, we evaluated products based on their setup, design, performance, usability, safety, and value and included the best options we’ve tested. Throughout our testing process, we carefully observed the mowers’ ability to navigate around obstacles, inclines, and tall grass with ease. Additionally, we conducted a thorough evaluation of the lawn’s appearance to ensure a consistently trimmed finish. As we compiled this list, we also considered the mowers’ runtime, cutting options, charging time, and cutting width.
Ryobi 40V HP Brushless 21-Inch Dual-Blade Self-Propelled Mower
- Powerful performance
- Long run time and fast charging
- Lightweight, foldable, and compact
- Easy to set up and start
- Quiet operation
The RYOBI 40V HP Brushless 21 Inch Cordless Self-Propelled Mower is the best battery-powered lawn mower we tested because it is just as powerful as some gas models, lasts for up to 70 minutes on a single charge, and is very easy to operate and maintain. We were surprised by how quiet this mower was (almost like weight noise) and lightweight (almost delicate), and easy to start (push-button compared to pulling a cord) compared to gas mowers we’ve used in the past. However, once we got it started and found the right height for an uneven lawn, thanks to the self-propelled technology, it was very powerful and easy to maneuver around, even over hills. By moving a slider from high to low, we could easily adjust the mower’s speed that we needed, depending on the terrain. Finding the right speed takes a bit of getting used to at first, especially on straight, flat rows where the mower was going almost too fast. But overall, we appreciated the power and found it really made mowing much easier, especially on hilly terrain.
This mower has an impressive 70-minute run time, and comes with two 40V batteries. Only one battery is needed at a time, and you can charge the other one with the included Rapid charger and switch them out when needed. We mowed for 45 minutes to an hour each time and had no issues with the mower running out of batteries. However, we will point out a few small issues we came across with the bag. This mower allows you to mulch, bag, or side discharge. The first time we used the mower for the season, the grass was pretty high and the bag filled up very quickly (after mowing about 25-30 feet with taller grass). However, the next few times we used it when the grass wasn’t as overgrown, we did not have that issue. Removing the bag to empty is simple, but when it was full, we did find that it spilled easily. Also, we did notice occasionally that grass would come out of the bag when it was full (just a few blades at a time). While in the mulching mode, we also noted that it did not seem to break up older leaves very well, but we did appreciate overall how well it cut the grass, and we appreciated the seven adjustable cutting heights (1.5 to 4 inches).
We also loved how compact and easy this mower is to store. We had no issues pulling the lever to fold the mower for vertical, space-saving storage. The safety features are also a big plus. The mower has a key, so even though it’s easy to start with just a press of a button, the key does need to be inserted in the mower behind a flap, so you can remove the key when you don’t want someone else using it. You also need to grip the lever when you start or use the mower, or it will not work. The LED headlights also provide extra light should you need it. Overall, if you are looking to switch from a gas to a battery-powered mower or want an easy-to-use mower for your lawn (ideally up to 3/4 of an acre), we found this to be a great choice.
How It Performed Long-Term
After three months of use, we’ve found the self-propelled feature to be especially helpful when mowing on hills and uneven terrain. We were able to use it up to four times on a single charge, which is quite remarkable. Although it may struggle with heavier weeds, it does an excellent job of cutting grass and collecting clippings
Price at time of publish: 799
Cutting Width: 21 inches | Weight: 75 pounds | Run Time: 70 minutes | Charge Time: 1 hour | Cutting Options: Bag, mulch, side-discharge
EGO Power Select Cut 56-Volt 21-Inch Self-Propelled Cordless Lawn Mower
- Self-propelled feature is easy to use
- Lightweight and easy to maneuver
- Foldable and compact for vertical storage
- 60-minute runtime
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A self-propelled lawn mower can make mowing your lawn an easier task because the mower does most of the work for you—you simply guide it over your terrain while you walk at a comfortable pace that you set on your mower. After testing the EGO POWER Self-Propelled Mower, we selected it as our best self-propelled pick because it was easy to turn the feature on and off when you needed it, and it made mowing the lawn feel less of a pain (especially on our backs!) compared to using a heavy gas mower. If you are new to self-propelled mowers, this will take a little getting used to (including this mower), but we think it will be well worth the initial time spent. In fact, when we first started using this mower, we thought the mower might run away (even on the lowest setting) because we were only used to a gas push mower. Once we figured out how to run the mower without the self-propelled feature, it allowed us to get used to the mower itself and all of its features. We found that the lowest setting was all we needed for parts of our lawn, even small hills, and when we felt like that feature wasn’t necessary (navigating around obstacles), it was easy to switch it off at the top of the handle.
Aside from the self-propelled option, this mower offers many great features, making it a great choice for your lawn. We found it easy to adjust both the handle’s height (two options) and angle (three options) with just one hand. Adjusting the cutting height was also a simple and easy task with six settings available, ranging from 1.5 to 4 inches. This mower comes with one EGO 56V ARC Lithium battery that has a 60-minute runtime and takes about the same amount of time to charge. It took us 50 minutes to mow our lawn, and we did not run out of batteries. We also like that you can choose from the bag, mulching, and side-discharge option for your grass clippings and use the LED headlights when mowing early in the morning or later at dusk. The handle can easily be folded, and the mower can be stored vertically in your garage or shed. And like most battery-powered mowers, you’ll get the advantage of a quick, push-button start with no cord and no fumes.
The only downside we reported was the learning curve with using a self-propelled mower. But once we figured out how to navigate the feature and the power it provides, we found it to make mowing the lawn an easier task. If you have a small, flat lawn with a lot of obstacles, this might not be the best option for you. Also, note that we found this lawn worked great on dry and damp grass, but we did experience one time where the mower would not start (the light blinked orange to indicate an issue), but when we moved it to a less wet area, it worked fine. While this mower has many of the same features as our best overall, it has slightly less of a runtime, is heavier, and only comes with one battery. However, it is a bit more budget-friendly, so if you don’t need as much power or as long of a runtime, this could be the better option, especially if you have other EGO tools with compatible batteries.
How It Performed Long-Term
We’ve been using our lawn mower for about three months now and we’re very pleased with its performance. One of the standout features is the battery life. we can mow the lawn three times before needing to recharge. What’s more, it handles thick and tall grass like a champ. we even let the lawn go for 10 days once, and it had no trouble at all. It’s also very effective at dealing with damp grass and leaves.
Price at time of publish: 549
Cutting Width: 21 inches | Weight: 93.61 pounds | Run Time: 60 minutes | Charge Time: 1 hour | Cutting Options: Bag, mulch, side-discharge