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Size: 40V 20" Mower (4.0Ah + 2.0Ah)
Features
- CORDLESS 20 LAWN MOWER Get more done, faster, with Greenworks electric lawn mowers. This 40V push mower provides the power you need with up to 45 minutes of run-time on a fully charged 4.0Ah and 2.0Ah battery.Brushless motor : No.No load speed : 6000 RPM
- LIGHTWEIGHT, EASY TO USE a lightweight 20 cutting deck allows for easy maneuvering through small to medium yards (up to 12 acre) more efficiently
- TWIN BLADES - offer better cut quality, superior mulching, and bagging capabilities
- AUTO SWITCH / SMART CUT TECHNOLOGY dual battery ports with auto switch allows for uninterrupted mowing. Smart cut technology adjusts for power or runtime based on the thickness of your grass
- MAINTENANCE FREE This walk behind lawn mower is virtually maintenance free, with no gas, no oil, and no emissions. It starts instantly and is quiet, but delivers gas-like power for your toughest projects
Description
Our Greenworks 40V Dual Blade/Dual Battery Port Mower is perfect for yards up to 1/3 acre with a total battery run-time of approximate 70 minutes. The G-Max 40V is a dual blade mower designed to deliver better mulching, cutting and bagging. The Dual Battery Port automatically switches to the backup battery for a longer run-time, making it easier to get the job done. All this without the hassle of gas, cords or maintenance. One-Battery fits all of our 40 Volt system that includes over 40+ tools to choose from (tools not included). Deck Material: Plastic, Deck Type: Stamped.
Brand: Greenworks
Power Source: Battery Powered
Material: Plastic
Color: 7Pin to 7Way 4Way Adapter
Style: Mower
Item Weight: 42.5 Pounds
Cutting Width: 20 Inches
Operation Mode: Battery
Product Dimensions: 29.2"D x 20.66"W x 19.5"H
Smart Home Compatibility: Not Smart Home Compatible
Brand Name: Greenworks
Model Number: 25302
Required Assembly: No
UPC: 841821010003
Manufacturer Warranty Description: 2 Year
Global Trade Identification Number: 03
Manufacturer: Greenworks
Manufacturer Part Number: 25302AZ
Unit Count: 1.0 Count
Power Source: Battery Powered
Operation Mode: Battery
Smart Home Compatibility: Not Smart Home Compatible
Battery Average Life: 70 minutes
Number of Positions: 5
Item Weight: 42.5 Pounds
Cutting width: 20 Inches
Item Dimensions D x W x H: 29.2"D x 20.66"W x 19.5"H
Color: 7Pin to 7Way 4Way Adapter
Style Name: Mower
Material Type: Plastic
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Jul 18
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 40V 20" Mower (4.0Ah + 2.0Ah)
I ordered this lawn mower in mid-April and wanted to make sure we thoroughly tested it prior to leaving a review. We ordered the twin force 20" deck and the weed eater, but not in the package offered by Amazon. Unfortunately the weed eater uses a different battery and charger. Our previous gas mower ended up hitting a chunk of metal and warping the blade so bad that it couldn't be used. When all the local repair shops wanted $200-300 just to replace the blade, we decided it was time to get a new mower. I did a lot of research online prior to ordering this lawn mower. There are a lot of considerations when purchasing a lawn mower. What cost range am I looking at? What size is my yard? Do I want self-propelled or push? Do I want gas or electric? If I get electric, do I want corded or "wireless" aka battery operated. There are enough options for lawn mowers it makes me feel like I am car shopping instead of looking for lawn equipment. However, after a lot of research I logged into Amazon and saw this was a prime member deal of the day, which made it a better price and it is listed as the #1 best seller in "walk-behind lawn mowers", and with almost 1500 reviews with an average of 4.5 stars it warranted a look and some additional research. Initially, my husband was a little concerned about moving from a more traditional gas mower to an electric based mower (corded or battery operated). There were concerns about the power of the mower, if it would be able to "muscle" through any tough spots or weeds as we have a patch of clover and weeds that keeps coming back despite mowing, weed eating and chemicals. After watching several videos from real users and reading about the use of dual blades instead of a single blade we were intrigued. Another few hours of information about models from this manufacturer and we decided to order and try this mower. It comes with two different "strength" of batteries, however that has not been a concern as our yard size didn't require us to order another extended use battery. The current set up which is default upon ordering works just fine for our lawn and gives us 60-75 minutes of mow time when it's kept up. The time goes down just slightly if the lawn has had excessive growth. The lawn mower has been here and used about once per week minimum since mid-April and we absolutely love it! The batteries charge fairly quick. NOTES: You have to hold down the bar, keep it held down and then push the start or it will not start. The lawn mower will use one battery (light on by that "bay") and once it depletes then it will switch to the other battery, this is normal. There are two smaller 10 inch blades instead of a single blade. The lawn mower is NOT self-propelled, however it is light enough that's not necessary. My husband can push it and mow with one hand. The batteries show how much charge they have left. There are two options for the grass you mow, you can either put on the mulcher and mulch it back into the ground or put on the bag and empty it elsewhere. The mower will use two of the 4AH batteries, which gives a longer mow time up to two hours according to some reviewers, but it works fine with 1 4AH & 1 2 AH. Our batteries usually have charge left and we have a half acre here. The batteries are lithium ion and do not have a "zero point". So you don't have to charge full, let it die, etc. You just charge and go. The height adjustment is really easy to use. The lawn mower weighs about 40 pounds, the site states 42.5 pounds, but it doesn't feel like it at all. The best part? It's SUPER QUIET! I have a lot of 3rd shift workers near and as a previous 3rd shift worker I know that a lawn mower in the middle of my sleep schedule can be horrible. This is VERY quiet operation! I can carry on a conversation in a normal tone without raising my voice while mowing. I've attached a very short video just to show how quiet it really is. The weed eater is actually louder than the lawn mower is. OVERVIEW: This is a quality built lawn mower, which is light weight. It requires a small amount of assembly (no tools) and offers a reliable alternative to gas. The neighbors can barely hear the lawn mower and it gives about an hour or so of charge the way it comes. It's definitely correctly labeled as a best seller. It's a VERY good lawn mower! It has surpassed my expectations for a cordless/battery operated mower, especially for the current price.
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Reviewed in the United States on May 28, 2016 by My Book Fairy
Size: 40V 20" Mower (4.0Ah + 2.0Ah)
I have a lot size of 177 x 65 = 11505 sq ft + 65 * 10 = 650 sq ft between sidewalk and curb of which, about 970 sq ft is grass. I can do all of the front and about 1/3rd of the back before I have to recharge the batteries. Recharge of both batteries takes about 5 hours for me, 3 for the big one and two for the small one. Both batteries are 40 volt, but one is 4 Ah and the other is 2 Ah, so about half the power. I really don't mind this because I need a break about halfway through anyway and it is a good stopping point. Basically, I get the whole front done and all of the cutting in/small spots done in the back, leaving just one big easy square in the middle to finish up after a recharge. The mower is very quiet as others stated and has an automatic high speed mode that kicks in when you are in heavy/high grass. It does an excellent job of cutting and mulching. Actually looks like you bagged even when you mulch, which is very nice. There is some getting used to trimming around things. The sides do a good job of getting to the edges, but the front does not. Remember the front blade is only on the left half and about 6 inches back from the front of the mower so in some spots where you normally do a front to back motion to get into a small space, you will need to trim more. As for using it, as some have stated, it is very quiet and light. It feels more like you are using a toy mower that happens to actually cut the lawn very well. I am thinking of buying an additional charger for $33 to cut the recharge time down to 2 to 3 hours, but an additional 4 Ah battery is a little expensive. At Amazon, it is $123! I had absolutely no problems using it and I have everyone (including my wife) who comes to the house try it out for a minute just to see how quiet and light it is! If I had to have my wife cut the lawn some day, I would feel a lot better about her using this than my old gas mower. The one lever height adjustment is very nice and easy to use and no figuring out front notches vs back notches. No pull start, just press the start button and hold it then pull the operation handle. The mower stops as soon as you let go of the operation handle so that is a nice safety feature. Much safer mower to have the kids use. I now only have one gas powered item left and that is my leaf blower. I just have never found an electric rechargeable that has enough power for blowing wet heavy leaves. I used to use about one gallon of gas per lawn cut, and as someone noted, it costs about 5 cents to charge these batteries. If that is correct I am saving about $3.50 per lawn cut so * 30 weeks per year = about $100 per year. Then add onto that the oil + filter + new blade every year and I would say this thing should save me abot $150 per year! The box says it has a 4 year warranty and I bought the extended warranty as well so I feel very good about the cost overall. My old craftsman was in the Sears repair shop 3 times over 3 years and each time I was without my mower for 1 to 4 weeks! There is zero vibration in the handle of this thing and it never feels like it is about to choke out on heavy damp grass! My only complaint is I wish it had an option for two big batteries for say $50 more and maybe I could do the whole lawn on one charge. Aside from that, it is an excellent mower and investment.
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Reviewed in the United States on April 27, 2014 by Rebecca or Michael Parmley
Size: 40V 20" Mower (4.0Ah + 2.0Ah)
I'm older with heart issues and don't like having to pull that cord to start a stubborn gas mower. I bought electric. I only use it for my backyard and that's not huge. I'm able to finish the entire thing without coming close to running down both batteries. Two batteries was a big factor in making my mower selection. It does have a learning curve due to the two offset blades. The left blade is forward of the right blade. If your grass is longer then you need to go slower or it will have a hard time cutting it. Same thing if your grass is wet. If you don't slow down you will likely end up with the mohawk everyone talks about. I've had no issues here although I would have loved to have the two batteries with just one blade. If my grass is a little damp, the mower cuts fine, but a lot of cuttings get stuck up inside around the blades. I wanted to just squirt the debris out of there, but you can see into the electric motors from underneath so I thought that might not be a good idea. I can't leave all that grass stuck in there so I had to scrape it out. I found the ideal tool for the job was an old carpet knife. The way it's curved and ends in a tip is perfect for scraping out most of the debris. It only takes a couple of minutes. If the grass is dry, I don't have to do this cleaning at all. It is so much quieter than a gas powered mower. It sounds like a blend of a box fan and a drone. Some people say it will rev up and you can tell it's using more power when the grass is thicker. I disagree. I won't say it starts to struggle, but it does start to work harder as the sound moves to a lower pitch. It has two batteries, but only runs on one battery at a time. When that battery runs out of power you will hear the motor die down and then perk right back up. It just switched from the dead battery to the charged battery. The batteries charge pretty quick. As with any battery for tools, the battery must be cool in order for it to charge. A hot battery won't charge. That's not an issue. It's just something we all know. Starting it is simple. Just press the button and then pull the bar back and you're off. It does NOT have the power of a gas mower. Not even close. It will cut your grass but you have to keep up with it. Don't let your grass get out of control. My son said I would hate an electric mower. He was wrong. I'm happy with it. I've passed the learning curve caused by the two offset blades. I love that it's so light and that it's so easy to start. I love having two batteries so I can always complete my mowing without having to stop to charge up. (I do use a gas powered lawn tractor for the rest of the property, but that starts with an ignition key.) I've read complaints about the mulching capabilities. I've had no problem here. I've found that if my grass is longer then I go slower and it mulches just fine. You just can't run through your yard like you did with that gas mower. I've yet to attach the bag and have never had any piles of unmulched grass lying around. I experimented with this by moving faster with longer grass. I did get some clumps of unmulched grass. I slowed down and it mulched fine. Again, this is NOT as powerful as your gas mower. These things may not be for everyone, but it's perfect for my situation.
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Reviewed in the United States on August 1, 2019 by West Texas
Size: 40V 20" Mower (4.0Ah + 2.0Ah)
NOTE: This is for the 20" mower only! Apparently Amazon merged several mower sizes into this one product. My wife and I wanted a mower that wasn't as loud and noisy as a gas mower, didn't require burning oil, and didn't vibrate as much. This mower fulfilled all of our wishes. We have a 1/3 acre lot, and this mower with two batteries works just fine. The only time we need to recharge the batteries half way through mowing is when we wait way too long between mowings, and the motors need to do some extra work to chop down the tall weeds. This mower is fairly easy to push, since it is much lighter weight than a gas mower. We also bought the electric trimmer that uses the same battery system, so we were sure to buy that kit with an extra charger and battery. Sometimes we use the extra battery, but it is nice to have just in case. Overall, I would buy this again and am quite satisfied. Update 5/17/2014- Still using this mower all the time, and it still works great. I've taken to only using one battery at a time, and keeping the other on the charger while mowing. Not sure it makes a difference, but I like it anyway to take a little break while mowing to switch batteries. When done mowing, I do tip the mower on its side and clean the underside. Some more expensive mowers have a water hose attachment to clean the underside, but I'm not sure I would spray water into the motor on this unit. :-) Using a stick works just as well, and seems to keep things working better. Update 9/25/2014- So, I may have let the lawn go a little. I ignored the grass for a few weeks thanks to overtime at work, family matters, and just generally being lazy when I got home. The grass in the back yard made it up to a good 8-10" tall. I thought for sure I would need a gas mower to power through that. Sure enough, my battery powered greed thing powered through it. Sure, I had to empty the silly bag way more often than I wanted (I never mulch), but the mower never stopped mowing because it was too thick. I'm still impressed, and still happy. Only thing I'm looking for is a grinder to sharpen the blades. Apparently a set of two replacement blades cost less than a "jackson" on Amazon with Prime shipping. I've found if I wait until the afternoon to mow when the grass is more dry, there is no need to clean the underside of the mower. Still 100% satisfied with this device, and 100% recommended.
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Reviewed in the United States on April 20, 2014 Reviewed in the United States on April 20, 2014 by A. Schuett
Size: 40V 20" Mower (4.0Ah + 2.0Ah)
When I was younger, it often fell to me to mow my parents’ lawn (or one of their parent's lawn, or their parent's other kid's lawns). When I bought a house of my own, what I remembered most about mowing lawns was the maintenance schedules of the gas powered beasties everyone owned and the special tricks needed to get them to start and keep them running. Some relatives had newer, high powered yard demons that could shave the green stuff with gusto and some had old decrepit things with rusted decks that had to rest and cool down with great frequency, but every one of them was a hassle in its own right. By the time I got fresh gasoline and mixed it with oil and put that murky mess into the tank (and cleaned up the inevitable spills) and got the thing started and actually mowed the lawn, half the darned day would be gone in the service of maintaining some stupid grass. Once I had my own lawn to maintain, the bloom had come off the rose, so to speak. I knew I didn't want a liquid fueled maintenance hog and that's about all I knew. I didn't shop for options to gasoline because I wanted to leave a pristine world for the kids or save the whales; I just didn't want to dink with gas powered tools anymore. At first, I bought a reel mower; honestly, I don't know what I was thinking... any fool can see those things take a lot of work. I tried using that reel mower for about a month before I realized that in its own way, it presented even greater maintenance and upkeep challenges than my old man's rock throwing rust bucket. So I fired up Amazon, read a bunch of reviews and pulled the trigger on a cordless Black & Decker mower. That first cordless mower worked a lot better than the manual reel mower it replaced, but it presented its own challenges: for one thing, it was heavy. The second problem was the charge on the battery would only last for about half my front yard before giving up the ghost and took almost an entire day to recharge. I considered buying a second battery and swapping them out, but getting to the battery was a study in inconvenience and I didn’t want to operate the mower with the battery exposed. So now, it took the entire weekend to mow my front yard. If pushing that mower had been less demanding, I might have just gone ahead with the exposed replacement battery plan, but I was usually beat after lugging that thing half way around the yard. I continued using that mower for about a year, mostly because I couldn’t justify getting a replacement so soon after buying that one. In the meantime, I started doing the research to see if there was a better cordless option. Right around this time, I started wondering if maybe gas wasn’t the way to go after all, but the prices of a good gas mower coupled with seeing the trials my neighbors were going through with their own fire-breathing labor savers kept me in the hunt for electrics. There were a couple of cordless options around that time, but the pricing just seemed insane, so I settled on a well-reviewed Black & Decker corded model (MM275). I used that corded model for several years. I’d already had a good long extension cord on an easy to use reel (Quick Winder RAP-100), so it was just a matter of learning not to run over that cord. This is harder than it sounds, especially when you factor in the trees. I learned to plan my turns and my runs to ensure the cord would not be in my way and would provide enough slack to get to the end of a run before renegotiating cord positioning. Sometimes, I misjudged this and stumbled over my own power source, but I stuck with it and I’d have to say... this was a pretty good mower. As the seasons turned, though, I’d begin cutting my lawn later and later each Spring and less and less often through the year until, finally, I’d mow the lawn only when it was atrociously tall and more than a bit of an eyesore. I knew I had to do something, but I still didn’t want to buy a dino-burner and the thought of cord-dancing had become a genuine deterrent. That’s when I started looking again and became intrigued by the GreenWorks 25302 package. The pricing was a bit formidable, but I’d begun using an Instant Pot for most of my meals a few months previously and found my bank account had swollen apace, so I assembled my justifications and bought the mower set along with a spare set of blades. My intention with the extra blades was to sharpen them and replace the factory originals, then sharpen those and have a spare set to drop in whenever I’d caught a rock or whatever. Unfortunately, the spare set of blades came as two “Blade II” blades, instead of one each “Blade I” and “Blade II”. Happily, I’d bought them from Amazon, whose return policies are pretty awesome. So I pulled the original blades and sharpened and re-installed them before running the green machine through its maiden voyage. Several weeks (months?) of neglect had put weed patches the size of small shrubs across my yard. There were isolated thistles towering over mounds of something that looked like mutant clover clumps and the grass itself was thick, hearty and used to getting its own way. I started out with just the larger battery slotted and the mower at full height when I hacked down the first and worst weed tangle. I was pleasantly surprised by how easily the mower could be maneuvered and how little effort it took to push. After chopping through that first thicket, I dropped the height of the deck to the halfway point and got down to the business of dominating the flora. To cut a long story not exactly short, this mower kicked chlorophyll. My ¼ acre front lot is now of uniform height and it only took the one battery to make that happen. As if that weren't enough, the whole process took less than 30 minutes. Up and back I went, up and back, rinse and repeat until the tall stuff was all gone. I was initially thinking I might, at a later date, also get the GreenWorks weed trimmer with a battery and charger of its own which would save me several bucks over buying the battery and charger separately, but now I wonder why I’d need a third battery at all. Given the fast charging times and the miserly power sipping of this machine, I wonder if I won’t wear myself out before challenging both batteries.
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Reviewed in the United States on February 23, 2015 by Kalo Alexandra
Size: 40V 20" Mower (4.0Ah + 2.0Ah)
This product went from 5 stars, to 3, and now just 1. Update 2021 08 17: Beware if you get this model! The #1 motor (right side) is defective, and they can't keep parts in stock to repair them. This was my 2nd TwinForce, and I loved them - until this one broke on its 4th use. I get it, things break sometimes, but it comes down to how the company stands behind their product - Greenworks does NOT - in my opinion. I was told to take my brand new mower to a repair facility an hour away (I live in a very populated and industrialized area. and hour away? Really??). The motor was said to be back-ordered a month. It has now been 6 weeks and I just got word that they have no clue if a part will ever be in for it. AND, this place said they now have multiple identical mowers with the same exact motor that went bad. I called Greenworks back and they said that maybe in October they'll have a part. This is a lawnmower and it's the middle of summer! I really couldn't wait the 4 to 6 weeks (my lawn is a mess now), but October? They gave me 2 choices: wait for a part (that might still not be available), or to take a replacement - NOT another TwinForce, but some model half the price and no refund on the difference. I asked about a full refund so I could just buy something else (even one of theirs but from a local retailer), but they could not do that since I paid Amazon. So, I called Amazon. After getting stuck on-hold for higher management for over an hour, I finally got a hold of the right people and they gave a full refund (Amazon gets 5+ stars here!!! Great service!) This first part is for my first purchase in 2014. I've since bought another in 2021 - updated review below. Newer update from 2021 July, at the bottom of this, contains frustration with needing service. First review (of first mower) I've had this for a couple of months now and can finally give my review. As you can see, I love it. The setup couldn't have been easier unless someone else did it for me. Slice the box open at the 4 corners to make it easier to remove from the box (my back was bothering me at the time of delivery), unfold the handle and away you go. The batteries even had a half charge or more in them so I was able to try it out right away. After a little test, I put both batteries on the chargers (I bough an extra charger - I highly recommend this) and they were ready when I was able to cut the grass a couple of days later. The first cut. Before the Twin Force arrived, the yard had only been cut once this season - by a gas mower that to be thrown out due to the metal deck having rotted out (I've had it for more than 10 years). The grass in the back yard is much different than the grass in the front. I started in the back (about 3,600 square foot), which has stronger grass blades, and a large amount of broad-leaf weeds, and several places where the grass growth is very dense. Having read that this mower isn't meant for hacking away at overgrown lots, I took it pretty easy this first cutting. I used the bagger and had the deck height up to 4, and I overlapped about 2/3 each pass, and walked fairly slow. It cuts most of the yard quite well, but the dense area looked like it needed a second pass. Just before finishing the back yard, the big battery ran out. But, I had been running the motor without cutting while I let the dogs try to get use to it, and other things. It's very light! My last mower was a self-propelled, but that was really only needed due to its weight, and maybe navigating around some obstacles on a tough hill. The Twin Force is so light that I don't miss the propulsion at all. It's like pushing a seed broadcaster. The bagger is nicely balanced and easy to carry to the bin and empty. For the front yard first cut, I put the little battery in and used the mulcher. The grass in the front yard is rather whispy and I lowered the deck down to 3. The mower feels lighter without the bag (especially since it doesn't get heavier as you go), but it seemed to not have as much suction to lift the grass. The front is about 1/4 the size of the back yard and the battery lasted without issue. A word about noise. I kept reading about how very quite this is, yet when I watch the videos, it sounds quite noisy. Well, microphones do pick up a lot, and they all seemed to be done inside of some structure with bare floors and walls. My experience is that it is much quieter than the gas engine it replaced, but maybe a little louder than I imagined it would be. Down side is that I can still hear the neighborhood dogs barking and the neighbors' gas engine mowers over this. The second cut: I was nervous taking the mower out of the shed. Some other reviews mentioned that after the first real use. a wire pulls a connector loose and the mower doesn't work. This did not happen to me. This time I used the mulcher in the back yard with a deck height of 3. I again felt like it wasn't getting as much suction, so I tried deck height of 2 and it seemed to improve. But, I prefer bagging and stopped using the mulcher after this cutting. This trip had less interruptions (not having to stop for bag emptying and dogs, etc.) and the battery lasted just fine. I got about 5 minutes into the front yard on this battery before I had to switch. I walked a little faster in the back yard this time, and overlapped about 3/4. The cut was mostly clean but I think there is still a little lack of suction to pull the blades all the way up for cutting when mulching. I''m curious how the suction (with the bagger) will be in the fall when we normally use the mower to chop up leaves and bag. The front yard cut better this time with a deck height of 2 and the bagger on. Third cut: I started in the front yard this time, but the battery only lasted for half of it. I put the big battery in and it worked fin. The only thing I could think of was that I didn't have the battery fully seated in the charger. I have a couple of issues with the chargers. You really have to push to make sure the battery clips fully into position (harder than you have to do in the mower I think). And I wish that I didn't have to use both hands to remove the batter from the charger. You have to depress the latch completely to the bottom while pulling the battery out at the 40° ish angle. So, I used the big battery to do the front yard and was able to complete the back yard with that same battery. Both yards were cut with a height of 2 and the bagger. The grass seemed to cut cleaner this time. I walked a normal pace and overlap was closer now. Fourth cut: This time I put both batteries in the mower to start off. I don't know which battery was in use, but about 1/3 the way through with the back yard, I heard it switch over to the other battery, so I guess it used the little one first. I don't know why, but I think I prefer having only one battery in at a time. Fifth and sixth cuts have been completed and all accomplished with ease thanks to the light weight and not having to put gas in the tank or check the oil. I'm a gear-head, so I like engines and things, but it sure is nice not having to mess with a finicky engine on a lawn mower. A Tip: Wear gardening or work gloves. The foam handle leaves a strange smell on your bare hands. It's better than having gasoline smell on your hands though. Part of me wishes that my corded string-line trimmer would die so that I could buy the Greenworks 40v trimmer. I would buy it with the extra battery and charger - basically the trimmer is free when you buy the battery and charger. I wonder if there are any plans for a snow thrower? UPDATE - 2021: Well, after 7 years, it was time to get a new mower, and I could not bare the thought of going back to gas. And, since I already have a pair of 40v batteries and chargers, I decided to stay with this model (besides, the 60v models look weird). My original mower was suffering from a bad motor bearing for about a year before finally going out last week. Looking back, I wonder if that bearing had always had a problem as the mower was never quite as quiet as I had heard others talk about. It was still much quieter than my other gas machines, but I thought it should have been quieter. My old one wore pretty well, motor bearing aside - even with the abuse it was sometimes subjected to (forcing it to mulch mounds and mounds of leaves in the fall, for example). New one (2021): WOW!!! I really believe now that the first one had a slightly bad bearing based on how quiet this new one is. This is exactly how I thought it should sound all along. This new one seems to have had an update to the software that controls the motors. My old one would lower the speed of the motors when it detected lighter grass and speed up when the grass got heavier (until it exceeded a certain percentage of battery remaining, then it would speed up on its own - like the Turbo mode on the newer 60v models). This new one stays at one speed all the time. I think it's in between low and high. At first this bothered me, but then I recall wishing that I could keep the mower speed higher as it seemed to not have enough suction to raise my lighter grass up to get clipped properly. So, I think I like this new method. Since it comes with new batteries (a 2a and a 4a) and 1 charger, I now have 4 batteries and 3 chargers (2 & 2 from my first purchase). So I added a new string trimmer to my arsenal and will have enough power after cutting with the mower to finish off with edging (I have an electric one but didn't use it as often having to deal with the power cord). Now I'll run the 2 4a batteries in the mower and use one of the 2a for the trimmer (a 4-star device, I'll review that separately). UPDATE: 2021 07 06. I was in the middle of my 4th cutting with the new mower, when motor #2 started smoking. I could tell something was wrong as the mower was noticeably noisier than it had been, but then it got better. But a little bit later it started to slow down and then I saw smoke coming from it. Checking the blades, motor #2 was harder to turn that #1 was, and it felt like marbles in it. I looked up the warranty information and found their hours of M-F, 9a-5p Eastern had just expired for the holiday weekend. I called on Monday and was told to take the mower and all accessories (batteries, charger,etc) to a qualified shop about 45 minutes away - ugh! I got it there today (July 6, they were closed yesterday) and they rattled off a list of problems they had dealing with Greenworks - all of it in parts availability. They said that in most cases, the part is discontinued. They looked for my motor and found it out of stock. They called and found the motor is back-ordered until the end of July! So now I have to go at least a full month without the mower.
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Reviewed in the United States on July 15, 2014 by Tjoe
Size: 40V 20" Mower (4.0Ah + 2.0Ah)
**EDIT 7/15/23** Greenworks shipped me a replacement lawn mower. Not this exact model any longer, however my overall thoughts on the new one far surpass my thoughts on the one you are reading the review for. This is still a nice mower, but a single blade unit might be a better option. I've had this lawn mower for about 2 years (purchased 6/21/21, review date 7/6/23). It's small, but fairly mighty. Until recently it has operated really well and I would have recommended it to anyone looking for a smaller, battery powered lawn mower. However, a few weeks ago I began noticing one of the blades would struggle to spin from time to time and grass would be left uncut. With the two blade system this has, it is very noticeable if a blade isn't doing it's share of the work. My first thought was that perhaps I needed to sharpen the blades. So I took out my owner manual and took every step required to replace the blades with new sharp blades. After the new blades were installed and the entire under carriage of the mower was thoroughly cleaned of all debris, I began mowing again. Unfortunately the blade itself does not appear to be the issue. At this point I decided to contact Greenworks for warranty service. I spoke with a very pleasant individual who assured me all would be taken care of. We talked through some basic troubleshooting, and general questions including if I had tried replacing the blades. Since I had we went to the next step of checking if a repair center was close by to get it in. Unfortunately the closest one was over 60 miles away so they would not send me to that one. The representative asked if I could be placed on a brief hold while they checked with their supervisor for options. This is where things went sideways, when they really shouldn't have. The supervisor requested a picture of the underside of my mower. Fine, no problem, while on the call still I took a picture and emailed it over. A few more questions came up about my replacement of the blades and the process I used. I explained I used the exact steps outlined in the owners manual, which included using a piece of wood to stop the blade from spinning while using a wrench to loosen the nut from the bolt. The representative worked as an intermediary in my interaction with the supervisor, and instead of getting on a call with me to ask her questions had the rep relay their questions to me. It seemed odd that we were going down a path that felt like Greenworks was trying to find a way that this wouldn't be covered under warranty, despite the mower being in otherwise excellent condition with no wear and tear on it what-so-ever that could be attributed to the blade not spinning all the time like it should. Eventually, after the supervisor ran out of questions to ask, I was told that they think their "system" is not working correctly because they "felt like" a location for service should be closer to me than 60 miles. The solution I was offered is to wait a couple of days while they work on their system and try to find a repair shop nearby to offer me service. Which would be fine, but to get to this point I was on the phone a total of over an hour, and I was assured they would resolve my concerns on the call at the very start of the call. Ultimately I am left waiting for an answer about whether or not they have a service center near me. I suspect they do not, and their system also as of my call says they do not... This experience and my entire feeling about Greenworks is feeling really sour at this point. I'd like this to be fixed or replaced as the warranty says it will with this type of issue... making me wait and trying every possible thing to get out of covering it feels really bad.
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Reviewed in the United States on July 6, 2023 by Purchaser
Size: 40V 20" Mower (4.0Ah + 2.0Ah)
Observations: - out of the box, the mover was ready to use, and it was easy (if you follow the instructions, at first I didn't) to finish extending the handle out for use - no more pulling a cord multiple times to start the mower, just push a button and pull up on a handle - it's so light, and very easy to push - larger rear wheels really help in pivoting the front of the mover 180 degrees - battery operated, so no more gas tank to fill / store, and no oil to fill / store - very quiet while running...sound like a fan on high setting - 70 plus hours of use with both batteries fully charged - (it's seems so 21st century to cut your lawn this way! Now what I really need a self-powered home!!) * mover was packed very nicely in the box when delivered, but oddly the two batteries and the charger were basically tossed in on top of the mover (The information below is based on a lawn size that's around one-third of an acre, with mowing times that are normally from an hour to an hour and a half based on grass depth, walking pace, and whether the grass was wet or dry.) Usage log: 1st week, 1st mower usage on dry grass - batteries are partly charged upon delivered, so I placed them on the charger until they were fully ready - set to mower to the 2 level to cut the grass higher - pulled out the mulch plug...this one was a bit of a battle cause it's wedged in there pretty tight...it's shipped inside the mower by default - found myself almost running while pushing the mover...I was so darn used to pushing a much heavier one, had to relearn how to slow it down a bit * afterwards, it is mentioned in the manual that the batteries must always remain stored with a 30% to 50% charge...so I charged the 2hr battery for 1hr, and the 1hr battery for 1/2hr (just to keep it simple), plus this will need to be done every two months when the mower is not in use (i.e. spring, fall, and winter) * also, the battery has indicator lights that didn't seem to work when I pushed the button (there are four lights on the front that should show the current level that the battery is charged, I wanted to have 2 of them light up for the 50% charge status) 2nd week, 2nd mower usage on dry grass - charged both batteries to full just before using them - the batteries lasted more than 70 minutes to cut the grass (had 3 startup of the mower) - the 3rd startup was near the end of mowing, after emptying out the grass catcher. The mower still had power, but it wouldn't restart...so I discover that if the battery which had the remaining power was placed in the left battery slot of the mower, then I could restart and finish mowing for the day. - noticed that a few blades of grass here and there in the lawn were not cut, as someone commented before on Amazon during their review...but since I have so many different types of grass and weeds (grass is technical a weed too) in my lawn that it's not a big deal. Beside, I never doubled checked nor even noticed if my gas mower cut every single blade, it was probably doing the same exact thing to the lawn. - again, charged both batteries to 50% to store for the next week 3th week, 3th mower usage on dry grass - charged both batteries to full just before using them - the batteries lasted more than 70 minutes to cut the grass (had 2 startup of the mower), but because I slowed down my pace too much (it was a super great day) I ran out of power - removed both batteries and charged the larger battery for an hour - placing in only the one battery in the mower's left battery slot, got me up and running (3rd startup) to finish my lawn in less than 5 minutes. - again, charged both batteries to 50% to store for the next week 4th week, 4th mower usage on wet grass - charged both batteries to full just before using them - the batteries lasted the 60 minutes it took to cut the lawn, still had power (had 2 startups) - again, charged both batteries to 50% to store for the next week (I'm very happy with this mover thus far...may update this review near the end of Summer.)
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Reviewed in the United States on July 10, 2016 by David L Davis