Ryobi Smart Trek 20″ Self-Propelled Lawn Mower Review
The Ryobi Smart Trek 20 self-propelled lawn mower does its best work if you generally keep up with your grass height consistently and place a heavy priority on bang for your buck and low noise. If that’s you and your house sits on a lot up to 1/3 of an acre, pull the trigger. Grab an extra battery to confidently cover 1/2 an acre.
Ryobi Smart Trek 20″ Lawn Mower Highlighted by Value and Quiet Operation
We tested 24 mowers for a head-to-head comparison recently, looking at both gas-powered and battery-powered models. We even considered commercial mowers and mowers geared more toward homeowners. Ryobi sent 2 versions of their latest mower. Today’s muse if the Ryobi Smart Trek 20″ self-propelled lawn mower. There’s also a 21″ version that you can read about here.
Pros
- Single-point height adjustment
- Quiet operation at 80 dB(A)
- Efficient battery use
- High value score (449 kit with 6.0Ah battery)
Cons
- Self-propelled drive takes time to adjust to
- Competent to cut, but less power than some of its competition
Shootout Results
The Ryobi Smart Trek 20″ self-propelled lawn mower does its best work if you generally keep up with your grass height consistently and place a heavy priority on bang for your buck and low noise. If that’s you and your house sits on a lot up to 1/3 of an acre, pull the trigger. Grab an extra battery to confidently cover 1/2 an acre.
We’re curious to see more feedback on the Smart Trek system and if Ryobi decides to make any adjustments to it moving forward. As the highlight feature for two of their battery-powered lawn mowers, it’s a big change from traditional drive systems that takes time to adjust to.
Battery-Powered Self-Propelled Lawn Mower Ranking: 9th Place
Performance
We use a complex variety of testing methods and data analysis to come up with our mower rankings, but we don’t necessarily want to bore you with the ins and outs of all that here. However, if that’s the sort of thing that gets you up in the morning, feel free to check out our cordless mower shootout!
Cutting Speed
Maintaining a fast blade tip speed is important for a mower since it ensures that it will provide the suction to pull the grass up into the deck and the power to actually cut.
We first measured the no-load speed of each mower to get a good baseline reading of what each one was capable of. This Ryobi Smart Trek 20″ self-propelled lawn mower clocked in at 2574 RPM with the blade tips hitting 145.4 MPH. This was the slowest no-load speed that we saw from our self-propelled battery-powered mowers.
With brushless motors, we expect an increase in speed as the mower encounters resistance. As the job gets tougher, a brushless motor’s electronics will direct more power to the blades to keep up with the work.
So, we hooked each mower up to our light-duty simulation – a test designed to replicate the conditions of a weekly maintenance cut. The Ryobi Smart Trek 20″ lawn mower actually dropped a bit of speed here. It only cranked out 2521 RPM with 142.4 MPH on the blade tips. That keeps it in last place at this point.
We then put our mowers through our heavy-duty testing, increasing the load we put on the blade. While we did see an increase of 19.5 MPH, this Ryobi model still finished in the last position with 2867 RPM and 162 MPH blade tip speed.
Takeaway
3000 RPM is the kind of rotation speed we like to see when we’re cutting to get the best mulching and bagging characteristics. However, that’s roughly 160 – 190 MPH a the blade tips depending on the blade diameter and Ryobi does hit the bottom of that range.
The trade-off here is that the lower speeds give you more efficient use of your battery while leaving a cut that isn’t as clean as models with higher speed and lift.
Cutting Area
Another important aspect of a battery-powered mower revolves around its runtime and power management. With a gas mower, you can just drop some more fuel into the tank and go. But with battery power, you get a nice long break if you run out of juice and don’t have a back-up battery charged up. Getting the most cutting area out of your battery is a big deal.
Under maintenance-cut conditions, we got 48 minutes worth of runtime from the Ryobi Smart Trek 20″ self-propelled lawn mower’s 6.0Ah battery. With its 19″ blade (yes, this “20-inch” mower uses a 19″ blade) and 48 minutes of runtime while walking at a constant 2.5 MPH, you can clear up to 16,720 square feet on a charge. To put in terms that are a little more concrete, that’s about 0.38 acres.
From a runtime perspective, it’s not bad at all. We like to see around 45 minutes at a minimum unless you’re maintaining a small city lot. Ryobi gives you plenty of maintenance cutting time for lawns up to 1/3 acre or so. You can easily do 1/2 an acre by adding a second battery.
Battery Efficiency
How efficient is Ryobi’s battery use? With its 40V, 6.0Ah battery, we’re looking at a grand total of 216 watt-hours. Under no-load, the Ryobi runs for 56 minutes, while under a light load, it runs for 48. This is 85.7% of the no-load speed, which is actually the highest percentage we saw.
Keeping in mind that its blade speeds were also the slowest on a maintenance cut, it’s clearly prioritizing efficiency.
With 16,720 square feet of cutting on a charge, we see that this mower gets 77 square feet mowed per watt-hour.
The end result? The Ryobi Smart Trek 20″ lawn mower finished our efficiency testing as the 2nd-place finisher behind the Greenworks Commercial model and virtually tied with Kobalt’s 80V.
Noise Level
With gas power, we just assume every mower will be loud (which is almost universally true, save for the Honda HRC216 mower we tested). Battery-powered mowers have the benefit of being a whole lot quieter to run, so we think it’s worth the comparison.
This Ryobi self-propelled lawn mower cranked out just 80 dB(A), which was good enough for a 5th-place finish in our shootout and just 2 decibels out of first place. In any case, your neighbors will appreciate your choice to go with the Ryobi if you’re getting to work early on Saturday morning.
Feature Set
Smart-Trek Drive
We like the idea of Ryobi’s Smart Trek drive, but it is a change that takes time to get used to. It works like this: as you walk forward, you sort of naturally press in on the spring-loaded handle. This is your throttle – the faster you walk, the more you’re pressing in on the handle and the faster the mower drives forward.
The struggle is that the drive kind of jumps forward or brakes hard. There’s no real easy transition from slow to fast or fast to slow, and the movement feels jerky. By bending your elbows, you learn to kind of roll with the changes the same way a mountain biker or skier tackles a course. There’s definitely an adjustment period, though.
Deck Material
We understand why some teams use plastic poly for the mower deck – generally, it drops some weight from the mower and makes it easier to push around. But we prefer steel for its durability. The Ryobi 20″ Smart Trek self-propelled lawn mower opts goes the plastic route.
Height Adjustment and Range
We really like the height adjustment design on this Ryobi Smart Trek lawn mower. It’s a single-point adjustment, but where other single-point adjustments can still require you to lift up while you adjust, this one really can be set one-handed without having to wrestle with it.
It has 7 available positions ranging from 1.75″ to 4.5″. There are some instances where you might like to get a bit lower on the bottom end of the range, but this mower will tackle the vast majority of grass types you’ll come across.
Handle Positions
Rather than having two or three set positions to set your handle, you can actually slide the handle to a position that feels most comfortable for you. #win.
Discharge Options
Out of the box, you can bag or mulch with the Ryobi 20″ Smart Trek self-propelled lawn mower, suiting the majority of situations. If you prefer the side discharge option, Ryobi offers the accessory separately.
Value
With a 6.0Ah battery and charger, the Ryobi RY40LM30 kit runs 449 at Home Depot. It comes with a 5-year warranty on the mower as well. It scores well for value, thanks to a budget-friendly price to go with its adequate performance.
One of the reasons we like Ryobi tools so much is just because of the incredibly deep line they have. The 40V line doesn’t have the same depth as their One 18V line, but there’s still a lot to choose from. Ryobi has string trimmers, blowers, leaf vacs, snowblowers, cultivators, mowers, chainsaws, sprayers, hedge trimmers, pole saws, and a multi-head power system available on the 40V platform.
The Bottom Line
The Ryobi Smart Trek 20″k self-propelled lawn mower does its best work if you generally keep up with your grass height consistently and place a heavy priority on bang for your buck and low noise. If that’s you and your house sits on a lot up to 1/3 of an acre, pull the trigger. Grab an extra battery to confidently cover 1/2 an acre.
We’re curious to see more feedback on the Smart Trek system and if Ryobi decides to make any adjustments to it moving forward. As the highlight feature for two of their battery-powered lawn mowers, it’s a big change from traditional drive systems that takes time to adjust to.
Ryobi Smart Trek 20″ Self-Propelled Lawn Mower Specs
For more information about Ryobi’s 40V lineup, check it out by clicking here.
The Truth About Electric Lawn Mower Horsepower
For the first time in nearly 20 years, I finally have a real yard to maintain at our new house, after living in apartments since 2000 and then our yardless townhouse since 2007. I’ve been having both fun, and frustration, purchasing lawn and garden equipment! Who knew there would come a time where I’d get so annoyed with lawn mower manufacturers that I’d feel the need to write a blog about them. All I’ll say is that considering the overall topic of my website, cancer support, I guess it’s nice to have some first world problems for a change!
Why Is It So Hard To Shop For An Electric Lawn Mower?
When we moved into our new home in July of 2017, the grass was growing and a lawn mower was the last thing I had time to think about on top of all of the logistics of moving and hectic work schedules. I figured I’d try to be green and buy an electric mower, and save myself the trouble of oil changes and maintenance and all that. Our lot is big for our area at 8800 sq ft, but still relatively small in the grand scheme of things, so how are you supposed to know what you really need with an electric mower?
What makes it difficult to shop for electric lawn mowers is that they only advertise the voltage that the battery and electric motor run at, and not how much power they actually produce. These are two different things. How are you supposed to know the differences between how 20V, 40V, 56V, or even 80V electric lawn mowers perform, compared to what actual gas powered lawn mowers with anywhere from 3 to 6 horsepower will do? It’s apples to oranges, and then you get to the issue of endurance. This is a non-issue with gas mowers, as they typically have more than enough internal fuel capacity for even larger yards, and if you run out you can just refill the tank and keep going. With an electric mower, if you can’t finish mowing your yard on a single battery charge, you either need a very expensive additional battery, or have to wait an hour to recharge the first, which can be a major inconvenience.
Claims of gas-like power or torque of gas, enough battery capacity to cover 90% of yards, and run times of up to 60 minutes or whatever are all incredibly generic weasel words, and highly prone to interpretation and misinterpretation. I guess I thought in my mind that a middle of the range 40V electric lawn mower ought to be enough. Was it? Well, I think you might know where I’m going, but read on to find out!
A 4HP Self-Propelled Gas Lawn Mower BASELINE
In the 1990’s, Homelite was a very reputable company that produced a full range of highly rated gas powered lawn and garden equipment. They don’t have the full line of products that they used to, but they’re still around, and I still remember my Homelite HSB21P4C mower. That’s Homelite Super Bagger, 21, Self-Propelled, with a 4HP gas engine, and a blade Clutch that allowed you to just idle the engine with the blade stopped while you emptied the bag without having to restart the engine. Don’t ask me how the heck I remembered that, but when you’re a kid and can’t even drive yet, getting a new lawn mower is pretty exciting. It was a pretty darned good mower, too. I was worried that 4 HP might not be enough when there were 5 to 6.5 HP mowers out there, but it was never lacking for power. It propelled itself up hills with a heavy bag filled with clippings just fine, and although it may have bogged down at times in taller grass that might have been a bit wet or required you to slow down a tad, it always kept going and never quit. It had just the right amount of power, not too little and not too much. I guess this was what I was expecting out of my 40V electric lawn mower, which wasn’t even self-propelled, and so all motor energy would be going straight to the blades and none to the wheels. Surely this must be enough, right?
MY 40V/4AHr Electric Lawn Mower
My wife knew I was looking for an electric lawn mower as we were moving. She saw this one come up on Amazon Prime Day on July 11, 2017 for just 199 last year and told me about it. It looked good enough to me, and heck for only 199 why not? I took a leap of faith and just blindly hip-fired the mower and jumped on it, hoping it would be enough. Honestly, it’s a great 3 in 1 mower for the money (rear bagging, side discharge, or mulching), but unfortunately it just couldn’t get the job done.
One of the first things I noticed was that it would shut down in heavier grass, and I was constantly tilting it on its side trying to clear all of the clippings out from under the deck in mulching mode. It just couldn’t maintain the blade RPM needed and would stall all the time, and overall didn’t do the greatest job of mowing. Not only did it not have the power to really mulch well, but it also didn’t have the suction to stand our mix of grass and weeds up straight enough to get a clean cut either. It would always leave rows of grass and weeds that would just get knocked over more than cut, and I’d have to end up going at certain areas again from the opposite direction to get a better cut. Even more frustrating was the lack of manual power control combined with all of the irregularities of our lawn. It would leave itself in high power mode as I exited thick grass, and would drop itself down to normal power mode right as I was hitting thick stuff again, and couldn’t stay in sync. What it really needed was a High, Normal, and an Auto power control lever, but didn’t have one.
As far as yard size and capacity, our house is on an 8800 sq ft lot with a front and rear portion, about half of which is mowable lawn. In the late summer and into the fall when the grass wasn’t really growing that much, it would finish the whole yard on its 4 AHr battery with about 25% or less charge left. I knew this was pretty marginal, and I wondered how it would do in peak growing season or as the battery aged and lost a bit of its natural capacity? The answer came this past spring when the grass started growing like crazy. This forced the mower into its high power mode almost all the time, and then it could only do just over half of our yard on a single charge! I had to wait an hour for it to recharge before finishing the backyard, which was annoying. There’s a slot for a second battery right on the mower itself, but they really kill you on these batteries. 100 for another 40V 4AHr battery was a bit steep for me, especially when the mower was already under-powered and not mowing that well in the first place.
Overall I was pretty disappointed. Clearly I needed more mower, and decided to just cut my losses and get another one.
THe electric lawn mower Marketing Weasel Words
I love all of these claims about gas-like power and torque of gas for electric mowers, and how even the lower end gas mower manufacturers are playing stupid games by only advertising the peak gross torque of their gas engines. None of this tells you a damned thing, and since since when did the lawn mower market become so ridiculous with such deceptive marketing? Really? You can’t just be straightforward with freaking lawn mowers? What on earth??
Hey, I have torque of gas! If I apply my entire 260 pound weight to a bicycle pedal with a 1 foot long crank, I’m making 260 ft-lbs of torque. Sweet! So I can power a car, right? Ha! No, because how quickly can I spin that pedal while applying that force to get actual work done? Not that fast. Just like electric motors, human beings make peak torque at 0 RPM, and then our torque curves rapidly fall off from there. How much power can I really produce?
This isn’t rocket science. There’s a very simple formula for this.
Horsepower = (Torque x RPM) / 5252
Lets say I could still apply 10% of that torque at 100rpm. How much power am I making? Per the formula, (26 ft-lbs x 100 rpm) / 5252 = 0.5 HP!! Right. That’s not powering a car, or even a lawn mower. If I go all out in spinning class at the gym, I can hit a little over 1000 watts for a brief and glorious few completely unsustainable seconds, which is 1.34 horsepower (746 Watts = 1 horsepower). In that burst of glory, that comes out to about 54 ft-lbs of torque at 130 rpm (or 47 ft-lbs at 150 rpm). In reality, most professional cyclists can sustain an output of about 280-300 watts for hours on end, which is around 0.4 horsepower.
Gas torque doesn’t mean that you have gas horsepower. And what does gas-like power even mean? If an electric mower really had gas power they could just advertise the horsepower of the electric mower, right? But they don’t, so obviously they’re hiding something. If you hit a patch of thick grass at a given speed, you need a certain amount of power (not torque) to get through it. If your lawn mower doesn’t have enough power, it’s going to bog down or even stop, unless you reduce your power demands on the mower by slowing down, possibly to a crawl, such that the rate at which you’re demanding power to mow isn’t exceeding the amount of power your lawn mower can deliver.
Lawn Mowing Is An Endurance Race, Not A Drag Race
There’s an old saying that horsepower sells cars, but torque wins races. Well, that can be true for automobiles if we’re talking about runs down the drag strip, and getting a nice hole shot off the line thanks to a mountain of torque (and traction). Watch most any Tesla Model S P85D or higher at the drag strip destroying tons of exotic cars, and you’ll see what I mean. Maybe that’s what the lawn mower manufacturers want you to think, and are preying upon consumer ignorance here by advertising gross torque and not even net torque, and are constantly trying to hide the actual horsepower output! Torque alone tells you nothing.
But we’re not talking about drag racing here. We’re talking about steady state mowing with very small engines or motors running at their maximum operating speeds. Horsepower is what’s going to win this race and get your lawn mowed, without having to slow to a crawl to avoid your engine stalling. What happens to electric cars at higher speeds or from 50 km/h rolls? They make a ton of torque (and power) up to a given speed, but after that they just fall off like a rock and get walked all over by cars that don’t necessarily have more horsepower, but that maintain higher levels of horsepower to higher speeds, and thus can do more work at higher speeds. Horsepower is what you need for mowing your lawn, not gas-like power or torque of gas. That’s total BS!
How Much Horsepower Does This THing Really Have?
When it comes to actual mowing performance, all I can say about my 40V electric mower is that it’s nowhere close to my old Homelite 4 HP gas mower that I used growing up, which I guess is kinda what I was expecting or hoping for. To be fair, the manufacturer, which I’m not singling out here or even identifying, never made any horsepower claims about this mower, but it doesn’t even mow like a low end 3 horsepower gas mower would either. A 3 HP lawn mower will bog down when you start running it through thick grass, but will keep going if you’re gentle enough. This electric mower doesn’t bog down in heavy grass, it just stops. It can’t handle it at all. It will get it done, but you have to be exceedingly gentle with it. So based purely on how it mows, I’d say this 40V electric lawn mower has a best of just 2 horsepower!
I’m an engineer, so I figured I’d try to be a little more scientific than just run what ya brung type butt dyno (grass dyno?) type testing. We can get a ballpark estimate of how much power this thing is cranking out based on the energy content of the battery, and how quickly it can drain itself. The battery is a claimed 40V and 4AHr battery which means it should be able to deliver 4 Amps of current for 1 hour at 40 volts. However, while pretty solidly in high power mode, it will actually go through an entire battery in a matter of 15-20 minutes. Let’s say that it has an endurance of 15 minutes in high power mode. That means it’s drawing about 16 Amps of current. 40V x 16 Amps = 640 Watts of power.
Electrical Horsepower is defined as 746 Watts, so 640 Watts is not even 1 HP.
Umm, Houston, we have a problem here.
I haven’t precisely measured how long the battery will drain if the mower is at high power mode the entire time. Maybe it’s 10 minutes? That would be 24 Amps of current and let’s say a peak power of 1000 Watts, or 1KW. And more than likely, 40 volts is just the nominal rating of the battery, and it’s probably running more like 45 volts. And maybe the battery is really more than about 4 AHr, or there’s a variance to the high power mode that you can’t really tell to give it an extra boost when needed, and assume 100% efficiency all around which isn’t true even with electric motors, and blah blah blah.
Even being as generous as possible and making every assumption in favor of this mower that I can, I can’t get the math to work out with this thing having anything more than about 1.5 peak horsepower!
And the reality is that it’s probably really sub 1-horsepower, as I suspect.
Gas like power? Compared to what? A weed whacker??
A Honda GX35 4-stroke 35cc weed-whacker type engine is rated to make 1.3 net horsepower, so there you go. That’s what they mean by gas-like power.
What a friggin joke.
It’s Not Just Electric Lawn Mower Manufacturers
This isn’t just about electric lawn mowers, though. I have to call out gas mower companies too, for the completely misleading claims that they’re making also. What ever happened to the base model 3 HP gas lawn mowers? Well, when you see a gas mower only advertising gross torque and not horsepower, that’s apparently how they market 3 HP class gas mowers today.
A certain gas lawn mower I saw with an unnamed but very well known brand of engine was advertising itself as having 6.75 ft-lbs of gross torque. What the hell is that? Well if you look up the engine directly at the engine manufacturer’s website, you can get the full torque curve in a PDF and see that it’s actually only making 5.25 ft-lbs of gross torque at the operational speed of 3600 rpm that most gas lawn mower engines have always run at. Using the formula, (5.25 ft-lbs x 3600 rpm) / 5252 = 3.6 gross horsepower. Now keep reading the fine print, and you’ll see that’s without air cleaner or an exhaust or small muffler installed, which is absolutely NOT how gas freaking lawn mowers that can kick up all sorts of dust and debris are ever run. That would be like instant death for a mower. The actual power you’ll be getting to the pavement (the grass) is the net horsepower, so figure maybe 10% lower figures than gross. You now have 3.25 net horsepower.
Boy, 6.75 ft-lbs of gross torque at a lower RPM that the mower never operates at sure sounds a lot better, so that’s what they go with these days, and they figure that consumers are stupid enough to fall for it or just won’t know any better. Better yet, if you end up buying something that ends up not working for you due to confusion, you have to buy another lawn mower, and they love that even more. That’s what they want. They want you to be as confused as possible so that you hopefully buy the wrong thing, and then have to buy again. You see how this little scam works? Yeah (bleep) that.
So yeah, I fell for it, but fortunately was only out 199, and now needed to buy another mower. Too much money for another battery for the electric mower that I bought that doesn’t even do a very good job in the first place isn’t Smart money.
Time To Upgrade, BUt What To Get?
Considering I had done exactly zero research on this mower or electric mowers in general and just sort of hip-fired it off of Amazon and hoped it would work out, I was perfectly willing to give another electric mower a chance, now having a much better idea of what I needed. I’m not biased one way or another, and actually kinda wanted an electric mower to work out. They’re quieter and can be stored vertically and take up a ton less garage space, and ultimately are going to have much lower operational costs than a gas. I wanted an electric mower to work for me, so if I was biased at all, it was actually towards getting another electric mower.
I knew that I clearly needed something with more oomph than a 40V motor could provide, and about double the capacity of the 40V/4AHr battery. Based on a read through Consumer Reports magazine online and other reviews, which I should have checked the first time around (I’m a lifelong subscriber to CR), it looked like the EGO 56V self-propelled lawn mower with a 7.5 AHr battery probably would do the trick for me. This is actually the only electric lawn mower that Consumer Reports magazine recommends, and seems to be at a pretty good price point at 499 with the battery and cooled charger included!
At a 40% higher operating voltage and assuming all other factors are equal, this 56V EGO mower might be equivalent to about a 2.0 to 2.5 HP gas mower on its best day or peak power level. That’s still marginal power at best, but it’s important to FOCUS on how well something actually works, and less on the numbers. The Consumer Reports review was pretty favorable, as were a few YouTube reviews, but I actually saw another YouTube video of this mower grinding to a stop in the same irregular grass that I have. Not exactly confidence inspiring. I was already committing to buying a second mower, and would have been kicking myself if this next one couldn’t hack it either. I felt like I needed a mower with both double the power and double the capacity at the same time. I was confident about the EGO having enough endurance, but only 40% more assumed power just wasn’t what I was looking for. I don’t have a big yard, but definitely need the power to get through grass, crab grass, weeds, and other super thick patches of combinations of all of the above that I have, otherwise a mower will just grind to a stop like my 40V electric was doing all the time.
I was torn and could have gone either way between the 56V EGO mower with 7.5 AHr and a base level Honda lawn mower that had a 160cc engine with a legit 4.5 net horsepower that would run all day for 100 less money. I actually have a Honda powered pressure washer that I’ve owned for years now, so it’s not like I don’t already have a small gas can for it, and oil to change once in awhile.
Our homeowners association ended up making the decision for me!
Electric Would Have Been Fine, but My HOA inadvertently Convinced Me To Get Gas!
This is now a funny story, but yes, my homeowners association mistakenly cited me for grass that was too long, even though I had just mowed it literally hours before we started getting over a week of solid rain. Yes, the grass got quite long, but adding injury to insult, the alleged inspection came during all of the rain when nobody could mow. I was already pretty pissed off about falling prey to deceptive and misleading marketing practices and needing to buy another lawn mower, and now I was double pissed off about being hassled by our HOA, not yet realizing it was a mistake and meant for another property.
My 1.5 horsepower on the best possible day electric mower would have absolutely choked on this grass after all of the rain we got. It literally has weed-whacker levels of power, which explains quite a bit! I would have had to raise the deck height all the way up, and probably run through the battery a few times, and mow a few times just to get it back into HOA spec. Needless to say, I don’t have time for crap like this, and I especially don’t have the patience to be hassled by our HOA for something so absurd! My wife and I are two busy professionals with two young children at home, a dog, and a disabled person that we care for full time, and I’ve had to travel for work quite a bit lately. I just need to be able to mow when I have time to mow, and not think about if it’s dry enough, what the weather forecast says, what time of day it is, or when our HOA might be eyeing our property (we live right across the street from their office!)
So I just said (bleep) it and got a Honda HRX21VKABCDEFG blah blah blah professional grade mower with the bigger 190cc vs 160cc engine, and 5.1 net (3.8kW) all day horsepower rather than 4.4 HP with the slightly smaller engine, and paid 599 for it rather than 399 for the lower tier Honda. Yes, this is total absolute overkill for my yard, but the first time I mowed with it put a smile on my face, and I knew I had made a great choice. It plowed right through even the thickest portions of my tall and still very slightly damp grass with zero bleeps given amounts of power. It has so much power and suction that it stands even the annoying weeds straight up and delivers a nice clean cut. It’s awesome. I can mow whenever I want with my ‘big block’ Honda mower, and if anybody asks me why I’ve gone all ‘eco-terrorist’ and didn’t get an electric mower, I can point right across the street to our HOA’s office, too. 🙂
Ultimately, both I and the HOA realized the mistake at about the same time. This was actually the second fix-it notice that I had received, and there were other fix-it requests on this notice that just made no sense at all, and seemed to fit some nearby properties better. I brought it to the HOA’s attention who had already realized the mistake themselves, and were profusely apologetic about it. It didn’t change the fact that it pissed me off to high heaven at the time, and that I bought fat and happy gas mower because of it. Hey, it’s fate. I was just meant to get a gas mower. 🙂 Even if a better electric would have had enough power, it still wouldn’t have mowed as well with the raw power this gas mower has to stand everything straight up as you mow and give a nice clean cut. Our yard and mixture of grass and weeds is very irregular, which is precisely where extra power comes in handy.
A SUmmary of Electric Lawn Mower Horsepower guEsstimates
In summary, here’s my best guesstimate of actual electric lawn mower horsepower based on some back of the envelope calculations from my 40V electric mower, and comparisons with actual ownership and use of 4 HP and 5 HP gas mowers, watching a few YouTube videos and reading reviews of the 56V EGO mower, and some feedback from someone I know who has an 80V mower.
Less than 40V: don’t even freaking bother. You’re talking sub 1 horsepower here. Maybe there are some lawns out there where this might be enough, but certainly not mine!
40V class: about 1.0 to 1.5 horsepower being as optimistic as possible. Enough if you have nice even grass and few weeds, but consider this the bare minimum, and totally inadequate if you have thicker stuff and/or weeds to get through. You’ll regret it like I did. There’s a reason why none of these lower voltage electric mowers are recommended by Consumer Reports magazine.
56/60V class: maybe about 2.0 to 2.5 horsepower also being very optimistic, but finally kinda like a real gas mower. Although I haven’t used one, they seem to be reasonably powerful and enough to cut through taller grass and some weeds, but YMMV, and the video I saw of one choking on some taller grass wasn’t really confidence inspiring for a 499 investment. Given one bad experience with an electric mower, if this one crapped out on me too I’d have instant buyer’s remorse and kick myself for not just getting a gas!
80V class: I honestly have no idea. The person that I know who has one has never felt like theirs was underpowered, but every yard and perspective is different, and the 80V motors could just be setup to deliver the same amount of power as a 56/60V mower with a bit less current draw from the battery. All other factors being equal, an 80V class mower could maybe be edging closer to 3 horsepower, but who knows? The people who make these aren’t claiming gas power, either!
120V Plug In Electric Mowers: Standard wall outlets in the U.S. are nominally 120V with 15A circuit breakers, but the maximum for continuous loads is 20% below that at 12 Amps, which is just below 1500W (1440W), and why our wives’ hair dryers all have a maximum of 1500W. What’s a few watts between friends? Thus, the theoretical maximum power you can get from a standard outlet for a plug-in electric lawn mower would be 1440W / 746W (per HP) = 1.93 gross electrical horsepower. The reality with all of these electric motors is that they’re not 100% efficient. Assuming 75-80% efficiency, you’re looking at about 1.5 net electrical horsepower at the blades, which is probably a bit better than my 40V mower, as my 1.5 HP estimate for my 40V mower is based on gross consumption and not net power after efficiency losses.
How Much Horsepower Are Those “Gross Peak Torque” Ratings Worth?
What 6.75 ft-lbs of gross torque on a gas engine comes out to
The very well known small engine manufacturer that I called out earlier, and whose initials perhaps not ironically are BS, is only advertising the peak gross torque rating of their engines these days. They have a bunch of engines, but here’s the actual peak net horsepower at 3600 rpm of their engines that I had to hand calculate from their datasheet, because they don’t want you to know. Net figures include the.10% correction going from gross to net.
150cc. 6.25 ft-lbs gross TQ at 2600 rpm but 5.70 ft-lbs @ 3600 rpm = 3.5 HP net163cc. 6.75 ft-lbs gross TQ at 2600 rpm but 5.25 ft-lbs @ 3600 rpm = 3.25 HP net163cc. 7.25 ft-lbs gross TQ at 2600 rpm but 6.00 ft-lbs @ 3600 rpm = 3.7 HP net
Yes, isn’t it interesting that one of the engines with higher advertised peak gross torque actually has LESS peak horsepower than another with less torque? This is because the torque curve drops off like a rock on this engine at higher RPM, and thus it’s less powerful while mowing your lawn with the engine at its high RPM operating speed! This is why advertising lawn mower engines by their peak gross torque ratings at engine speeds they never operate at while mowing is so freaking stupid and totally misleading.
Final Thoughts
It’s so stupid that I managed to get pissed off enough at just how intentionally deceptive and misleading lawn mower manufacturers are being that I felt the need to go on a big rant and write this blog, but here we are, and here are my final thoughts.
ELECTRIC: If you want a pretty good electric lawn mower with a nice combination of both power and endurance, the EGO 56V 7.5AHr seems to be the sweet spot for both of those as of 2018, which is probably why it’s the only electric mower that’s been recommended by Consumer Reports magazine. I probably would have gotten one of these if it weren’t for the mistaken citation by my HOA.
On a final side note, I saw a customer review at the EGO site claiming that this lawn mower out-performed a 6.25 horsepower gas lawn mower. Uhh, with a new blade? And was it running properly? Were they actually running it at full power, unlike certain neighbors of mine that I constantly hear running their gas mower at idle while trying to mow their lawn? (I’m not joking!) Let’s say it actually had the same 5.1 net horsepower as my Honda, and assume 100% efficiency. That’s an output of 3.8kW, which would require 68 amps of current from the 56V battery. Based on the energy content of the battery, you would have 6 minutes of run time at that power level, and it would be smoldering hot when you were done. You would need 4 gauge wiring to handle that much current, which is what they might typically put on large electric furnaces for homes!! Call me skeptical, but this isn’t passing my sniff test at all. I’m sure it’s a great mower, but I can pretty much guarantee you that it doesn’t have anywhere close to 5 or even 6 horsepower, or even gas mower power, and they don’t even claim that it does!
I’m pretty darned sure that this person surely must have confused horsepower with the peak gross torque rating of their gas mower, and that it actually only has around 3 horsepower. That would be far more believable and make sense!
But anyways, the EGO gets a recommendation from CR and a lot of positive reviews elsewhere, so I’m sure it’s a fine mower.
GAS: For gas mowers, I would just get a Honda. The base Honda mowers are very good and highly rated at Consumer Reports, and 4.4 net horsepower is more than enough power. I’m extremely pleased with my 5.1 net horsepower (3.8 kW) Honda HRX21VKA. It will plow through anything, at any time, no questions asked, and with zero bleeps given, and has a solid warranty. It ran right through my super tall grass at full speed, and probably has triple if not quadruple the power of whatever my 40V electric mower has just based on mowing performance alone, so I know my estimate and calculations of about 1.0 to 1.5 HP peak for my electric is probably pretty accurate.
Another thing I like about Honda is that they’re actually being HONEST, and publish the full power and torque curves for the engines, and in NET horsepower and torque rather than gross. Unlike a lot of the other manufacturers, Honda has a very powerful brand name to stand behind, so perhaps they can let the quality of their products and engineering speak for itself, and don’t feel the need, or like it would be beneath them, to resort to cheap lies, dirty tricks, and lying by omission to sell their product. In a world filled with so much BS, I appreciate a company that’s honest. Thanks, Honda. There are cheaper gas mowers out there from reputable brands that I’m sure do a perfectly good job of mowing, but I can’t recommend the products of companies that are marketing their goods in such stupid and misleading ways, even if they work OK in the end.
I hope this helped!
Don’t lie or mislead about technical things to an engineer, because they’ll find you out and call you out! I really can’t believe all of the shenanigans going on in the lawn mower industry, and that I felt the need to write a blog about it, but this is just plain ridiculous. How on earth did the lawn mower industry become so freaking dishonest and misleading? What in the world?? No standards, no shame, but considering the overall topic of my website, it’s nice to have some first world problems to rant about once in awhile. 🙂 Honda is actually being honest, and so I’m happy to give them my money.
If you’re someone who has more technical information about these things, or better ability to test them than I do with insights to share, get in touch. I’d love to hear from you.
APRIL 2020 UPDATE
For awhile this has been the #1 blog on my entire website, and it gets thousands of hits per month from early spring through the summer. It’s the first search result for “electric lawn mower horsepower” on most search engines, and I appreciate all of the Комментарии и мнения владельцев and emails that I get. I’m glad so many have found this blog and enjoyed it, and hopefully gotten a laugh or two out of it. So thanks, and I figured I’d post a quick update nearly two years out from this fiasco.
I donated the electric mower to the local Habitat for Humanity Re-Store last year in 2019, so hopefully it went to a good home while contributing to a good non-profit organization, and that the person who bought it didn’t find this blog! LOL!
For the record, I do have a Ryobi 40V string trimmer, that I also got the hedge trimmer, leaf blower, and pole saw attachments for. When it went on sale last year, I also got the Ryobi 40V dedicated chain saw as much for the extra 40V battery as for having a real saw. THOSE I LIKE. They all have an appropriate amount of power, and it’s nice to have a second 40V battery now also. They’re all very nice products, and saves me the trouble of having to have another gas can with 2-cycle fuel-oil mix.
The fire-breathing 190cc Honda “big block VTEC” mower is running great. No regrets on that, but I probably could have saved myself some money by just getting the 160cc model. I was obviously pissed off when I bought the bigger one, but it seriously has “zero fcks given” amounts of power, and it puts a smile on my face whenever I plow through way too tall grass at full speed, and it just takes it. Professional grade, bruh. I bought one for my parents also, the fancier one with the electric start, because their old mower was crap. They love it too and said it’s amazing, and that they can mow their yard in half the time with it, and that it gives them a good workout keeping up with it! Lol! They have a much larger yard, but it’s too hilly and sloped for a rider, so it’s the perfect mower for them. Honda truly makes good stuff.
Thanks again for stopping by and reading!
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.
Best Overall
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).
DON’T BUY a Ryobi 40V Self Propelled Mower.
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
Ryobi 40V HP 21″ Brushless Crosscut Self-Propelled Mower Review
Best Self-Propelled
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
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
The best cordless lawn mowers in 2023
Looking for the best cordless mower? Browse our experts’ pick, from budget to premium models.
A lawn mower may be one of the first purchases we make when getting a garden of our own, but that doesn’t mean finding a good quality one is easy. There are so many models and brands on the market to choose from, including corded electric and petrol, but as their range increases and fall, cordless, battery-powered models are an increasingly popular option.
Light and compact compared with traditional petrol models, cordless mowers are simple to use, easy to manoeuvre around the garden, and have none of the maintenance and servicing needs or costs of petrol lawnmowers. Powered by a rechargeable lithium-ion battery, which charges up quickly and won’t lose power in storage, they’re also quiet and emission free.
To compare these cordless mowers against other types of mower, we’ve reviewed the best lawn mowers, robotic lawn mowers, electric lawn mowers and push mowers, too. And if your lawn needs a bit of attention, our experts have tested a range of the best manual and powered aerators and scarifiers.Keep edges looking neat with our pick of the best strimmers, the best garden shears and the best lawn edging, and if you’re thinking about somewhere to store your new mower, our comprehensive guide to choosing the best garden shed will be helpful.
For your next DIY project, have a look at the best cordless drills.
The best cordless mowers to buy at a glance
Cordless mowers. Buyer’s Guide video
Many thanks to Rosie Yeomans and Sparsholt College for their help in making this video.
Getting the best cordless lawn mower for you means ensuring it has the correct cutting width, range of cutting heights, and weight plus a battery run time that matches the size of your lawn. We’ve tested a range of cordless push mowers, putting them through their paces across a range of grass and terrains, to help you find the right one for your garden.
Each mower has a detailed list of pros and cons for clarity and has been rated according to set up and storage, handling, mowing and value for money. Every mower in our round up below has scored a minimum of four out of five stars, so you can buy with confidence.
In every review we award outstanding products our coveted Best Buy award. To see these and the others we recommend, browse our pick of the best cordless lawn mowers, below.
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Best Buy cordless mowers
Husqvarna Aspire LC34-P4A
Our rating: 4.9 out of 5
- Quiet
- Cuts even long grass with ease
- Battery level visible while mowing
- Small and compact for easy storage
- Part of the POWER FOR ALL cordless range
Part of the new Husqvarna Aspire cordless range, which includes a hedge trimmer, pruner and leaf blower, this 34cm mower is powered by an 18V POWER FOR ALL ALLIANCE battery and charger. These are interchangeable with tools in other leading brands such as Flymo, Gardena and Bosch so if you also invest in tools in these ranges, you’ll only need to buy the bare tool and won’t have different batteries and chargers taking up space in the shed.Great for small gardens the mower comes ready to go, there’s no assembly or handles to attach, and it folds down to a compact size when you’re finished, with a telescopic handle that folds completely flat over the body of the mower. It can then be stood up against a wall or hung up, and even comes with a handy hook. The 30l grass bag also flattens down to take up very little room and can be hung on the mower. The Aspire is light, with a carry handle so that lifting it up steps or into other areas is easy and it has an adjustable handle to suit different height users. It’s comfortable and easy to manoeuvre around the garden and has just four cutting heights to choose from, ranging from 25-65mm and changed easily with a single lever on the body of the mower. It cuts grass quietly and smoothly and has an automatic boost that increases blade speed when you’re mowing in tougher, longer areas that works well. You can hear it kick in when you push the mower into longer grass and unlike other cordless mowers that can cut out, just carries on cutting the grass. While you mow the battery charge level is always clearly visible so you know how much battery you have left and when it needs charging. It comes with a two year warranty and we awarded it a BBC Gardeners’ World Magazine Best Buy in 2023 for ease of use.
Specs: Battery: charge time. 95 mins; run time. 500sqm. Cutting: width. 34cm; height. 25-65mm. Grass box. 30 litre.
Buy the Husqvarna Aspire C34-P4A cordless mower from Husqvarna and Sam Turner
Greenworks GDG24LM33
Our rating: 4.5 out of 5
- Easy to assemble and use
- Comfortable padded handle
- Choice of mulching or collecting clippings
- Interchangeable battery with Greenworks 24V family
Ideal for smaller gardens this sturdy, great value cordless mower is easy to put together, well thought out and simple to use. Thanks to a padded handle it’s comfortable to push, although it did feel a little short for our taller tester, and it’s light and easy to manoeuvre around trees and beds and borders. There are five cutting heights to choose from, adjusted with the simple lift of a lever and it offers the choice of collecting clippings in the 30 litre fabric grass bag or inserting the mulching plug and leaving them on the lawn to break down and feed the grass. It mows well but doesn’t like very long grass, with the battery cutting out occasionally but its long lasting brushless motor offers a a decent run time of 46 minutes and it charges in two hours. Plus, as part of the Greenworks 24V family, both the battery and charger are interchangeable with all the other tools in the range, saving you money if you invest in more in the future. We awarded it a BBC Gardeners’ World Magazine Best Buy for the best budget cordless mower in 2023.
Specs: Battery: charge time. 120 mins; run time. 46mins. Cutting: width. 33cm; height. 25-70mm. Grass box. 30 litre.
Yard Force LMG37A 40v 37cm
Our rating: 4.8 out of 5
- Rear roller
- Double folding handle for easy storage
- Quickest charge time
- Part of the Yardforce GR40 cordless range
This sturdy mower has a 37cm cutting width and useful features including a rear roller for those much desired stripes. Awarded a BBC Gardeners’ World Magazine Best Buy in 2022 for small to medium lawns, clippings are collected in the large 40 litre fabric grass bag. It offers a wide choice of seven cutting heights, from 25-75mm, and is easy to fold away at the end of the day. The 40V battery is quick to charge, taking just 50 minutes and when full it has the capacity to cut a 400m2 lawn.
Specs: Battery: charge time. 50 mins; run time. 400sqm. Cutting: width. 37cm; height. 25-75mm. Grass box. 40 litre.
Buy the Yard Force LMG37A 40V 37cm cordless mower from Yard Force, Amazon and Wickes