Greenworks40V 20 inch Cordless Twin Force Lawn Mower, 4Ah & 2Ah Batteries with Charger Included, 25302

This product is decent.The big issue I had was missing parts, which makes the handle not grip strongly to the body, which makes it very hard to push. After opening and installing this machine, I was too exhausted to return it. So I've been using tons of plastic straps to strengthen it. It looks ugly now, but at least I can push a bit better.

Excelente producto y súper fácil de usar y limpiar.

Okay so this review is for the 20-in greenworks twin Force 40 v electric lawn mower with the 4 amp hour battery and 2 amp hour battery. I was comparing this to an ego which my parents had purchased years ago and swear by it and I could not justify the price. So I decided to take a chance on this one having it been a little bit cheaper than the ego. some of the reviews are mixed and some of them are very detailed and there's a few that are basically a one-star rating and after weeding out the pros and cons of each review I decided to go with this so. If you purchase this from Amazon this will come on a truck it is a rather big box but it weighs from what I was able to decipher less than 50 lb. The box itself has handles in the side which are very flimsy and very weak I do not recommend that you lift the box using those handles as it will tear the box apart. Opening the box I was completely surprised as this unit was much lighter than my gas powered mower it contains the mower handle and a package with the charger and two batteries. This is very easy to assemble and requires no tools. The four amp hour battery took approximately 1 hour to charge the 2 amp hour battery took approximately 30 minutes or so to charge. So that being said, I noticed when I removed the 4 amp hour battery from the charger it was quite hot, this is not a big concern as it does cool down quite quickly and is comparable to any other 40 volt battery. The charger design is quite simple and is almost identical to all of the other rechargeable batteries it does have a lock so that when you insert the battery into the charger you must lock it in place you will hear click when it is locked to remove the battery you simply put on the lock button on the battery and slide it in reverse of how you inserted it. One thing to know is that read the instruction manual! With all other mowers you will pull back on the safety handle and then start the machine with this specific machine you hold in the start button and pull back on the lever once the machine is started you can let go of the start button. If you try it any other way the machine will not start. This is how I was able to narrow down a lot of the negative reviews that said that it doesn't work. People did not read the instruction manual. At first glance on the underside the blades seem extremely small but are quite sharp. I'm not sure if they are going to be difficult to find so I would recommend getting a spare set of blades to accompany the machine. And in one of the pictures that accompanies this review it shows the two blades almost rubbing together there is a quarter of an inch space between the blades so as long as your shaft doesn't get bent you should not have any problems with this but you will need to get the exact size blades for replacement to keep this quarter inch gap. Again the batteries are standard batteries and seem to be pretty decent. It does come with a 4 amp hour and a 2 amp hour battery and will automatically switch over when one battery is depleted. Although I do recommend placing one on a charge and the other in the machine therefore when one battery goes dead you will have a spare battery that is fully charged. It does have a great feature with one handle raising and lowering the height of the wheels. This is so simple and very easy to do unlike classic mowers which you usually had to do each individual wheel and sometimes struggled with it. This actually does all four wheels at once. Now when I tried out this for the first time in my yard I was very skeptical I didn't think it was going to do a good job but I decided to give it a go anyway instead of sending it back at first look at the undercarriage it looked very cheap and not well made but again I decided to take a chance on it. This cut through wet morning grass like a hot knife through butter I am so impressed with this mower it actually cut fantastic shaved about 15 minutes off of my normal cut time and was just light as a feather going through the grass. It was not loud at all in fact my dog usually runs from loud noises and he didn't even budge. To be honest my shop-vac is 10 times louder than this is. I will post a decibel rating as soon as I have another person to hold the machine in the on position. Once I was done with my lawn which is rather small less than a quarter acre. I noticed that the 4 amp hour battery had only gone down one bar. I had been out there using it for approximately 15 to 20 minutes in wet, thick grass. Now to get an idea of runtime I am guesstimating that in ideal conditions normal grass height, not foot long weeds, and dryer grass not wet. This should get approximately 45 minutes to 50 minutes of use on one 4 amp hour battery. What I do recommend is that if you are using this on a larger lawn I would highly suggest getting at least one more 4 amp hour battery. Anything more than one acre of land I will not recommend this for as it would be too much for this mower I believe to successfully handle. But for standard lawns approximately a half an acre or less I really do believe that this mower would be fantastic for you. I like to keep my lawn a little bit longer than most lawns in my neighborhood so that it will remain nice lush and green in the hotter months. Just so it will prevent drying out . Okay now on to the pros and cons.Pros1. Is very lightweight2. Mulches better than most3 bag has a indicator indicating when it is full and when you should empty it.4. Batteries seem to last a good amount of time and has dual batteries with an automatic switch over when one battery is depleted.5 wheel height adjustment does all four wheels at once and is very easy to use.6. Has quick lock release clamps so that you can quickly and easily fold up The handle for quick storage.7. 10-in wheels in the rear8. Batteries are cross-compatible with most all green works 40 volt tools.9. Comes with two batteries and charger10. Cheaper price than most electric mowers on the market.Cons1 cost to replace the battery is on the expensive side right now approximately $150.2 blades seem rather small and could be very difficult to find replacements for at a later date.3 ABS plastic deck seems rather lightweight and could present problems if you were to accidentally run over larger sticks or larger debris and may not hold up.4 quick release clamps if over tightened could potentially break if you're not careful and don't understand how to adjust it.5. Documentation is not very well written and does require a little bit of common sense to read between the lines. It does not indicate how long the batteries take to charge.My overall opinion of this mower is that it is definitely well worth the investment and is comparable to some of the big name electric mowers on the market currently.I will update this review from time to time as months go on. The only reason I did not get this a full five-star review is that there is always room for improvement for example instead of having an ABS deck maybe make a tempered aluminum deck.Update. The decibel level from standing directly behind the machine is 72.2Basically, the equivalent of a shower or toilet flush. Slightly less than a vacuum cleaner.

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.

I think in a lot of ways this is a great lawn mower; however, I'm really disappointed in the battery life. I started looking for a new mower because my 36V black & decker was having a hard time finishing my lawn on a single charge (after 3 seasons). My lot is a little bigger than 1/4 acre, and it typically takes about 60 minutes to mow my lawn. So, when I saw this would last up to 70 minutes with both batteries I figured it would do the job. Also, because it had two batteries, I figured I could use the smaller one, then once it ran out I could start charging it while I used the larger one. I figured at that point, it would be able to charge enough to finish off whatever little bit I might have left.The first time I mowed, I decided to try bagging the clippings even though I normally just mulch. I figured this would use less energy and would give me a good feel for how much time I'd really get out of the batteries. I was very surprised at how quickly the first battery ran out. It lasted around 17 minutes. I put in the second battery and around 27 minutes later it ran out as well. This left me with a pretty sizable portion of my back yard remaining. I figured it was okay though, since I had the first battery charging. I went to get it off the charger, and I was surprised that the green light was on, indicating that it was fully charged. I pulled it off the charger, and pressed the button to see the charge level, but nothing lit up. I couldn't get it to show how much was left. So, I figured maybe that was just broken. I put it in the lawn mower, and it wouldn't turn on. The battery was still dead. I went and did some other things, and came back several hours later to find that the large battery had finished charging, and I finished the job. I put the smaller battery back on the charger seeing what would happen. The next morning I woke up and the green light was on again, so I hit the charge indicator and it showed a full charge.The next week, I decided to mulch instead of bag the clippings. This time I was being more careful about seeing how long things would last. The smaller battery lasted only 15 minutes this time. I went to put it on the charger, and watched. This time, the light started red, but then within a couple of seconds it flipped over to green. So, now I'm trying to figure out what is going on. I feel it and the battery is pretty warm, so my theory is that maybe that is causing the charger to think it is charged somehow. After fiddling with it for a while, taking it on and off the charger, unplugging and plugging it back in, etc. it wouldn't charge the battery, so I just went on to finish the lawn. On the second battery I got around 25 minutes before it died. By the way, my back yard is a little thicker because it has more shade, so this is why I think the larger battery doesn't give me double the time. This time I just pulled out my old mower and finished the lawn.After this I decided to call in to greenworks to see why my batteries can't charge right away, and also to see if there is some reason the batteries don't last as long as they claim. The guy told me that my charger is probably bad, so they will send me out a new charger (I'm still waiting for that). Then he tries to explain the problem with the batteries, clearly showing he doesn't know what is going on. When I told him that I was using one battery at a time, he said that is clearly the problem. The only way I'll get 70 minutes out of it is if I put both batteries in at the same time. I try to get him to explain how that makes a difference, and he can't. I tried to tell him that it doesn't matter if I manually switch over the battery, or if the mower automatically switches it over. In either case it should give me the same result. He insisted that I need to use both batteries together. When I pressed him more, he finally went to talk to his manager. He came back and told me that this mower only has an average run time of 40 minutes. I asked if it is so low, then why would they advertise that it can go up to 70 minutes. He explained that the conditions matter, I have to have a flat lawn, short grass, it can't be wet, etc. All of this makes sense, and I already anticipated that, but it still seems like 40 minute average is a far cry from 70 minutes and this would have been a deal breaker for me.So, for my third attempt I decided to try using both batteries at the same time. Also, a good portion of my lawn was very short. We haven't had much water lately, and it has warmed up. Especially in my front yard, there was barely anything to cut. So, I figured this would be a good test of the ideal conditions. I got going and 15 minutes into it, I hear the lawn mower cut over to the second battery. This isn't looking good. However, since the lawn is so short, I've been able to move rather quickly, so I'm further through the lawn this time around. I get completely finished with the lawn about 25 minutes later. I was really moving fast compared to normal, it isn't normal to be able to finish the lawn in 40 minutes. I decide to keep it running to see how much more I can get out of the battery. I went over some of the thicker areas where it didn't quite mulch everything all the way, and 5 minutes later the battery dies. So, I got 45 minutes out of it this time, probably because the lawn is so much shorter.I put the batteries on the charger, and the next day I decide to try an experiment. I put both batteries in, turned it on in my garage, and just let it run until it died. Doing this, I got 62 minutes out of it before it died. So, I don't know how you can get more ideal conditions than that. The mower was just running, with nothing to cut, and I still couldn't get 70 minutes out of it. Obviously, that is much better than the 45 I've been able to see before, but that still would be hard to finish my lawn on a week when the grass has grown longer.At this point I'm not sure what I can do. I feel like the batteries must have some issues. I've read that some people have got up to 90 minutes on this, but maybe they had two larger batteries. I'm sure that either the 70 minute run time is just an outright lie, or I've got some bad batteries.Now, I will say with all of that out of the way. I'm very pleased with how the lawn mower runs in general. This is probably half the weight of my old cordless mower. The previous one had a super heavy battery. Although it was still lighter than a gas mower, I was surprised at how much lighter this is. Also, it is more powerful. With my B&D I had to move super slow in thick parts of the grass, and even then sometimes it would get so bad that the blade would stop spinning completely. I've had to slow down a little bit with this mower, but never as slow as I had to do before, and it cuts through things pretty well. If I do go too fast, I've noticed it doesn't cut everything quite as well, but that is something I just need to be more patient with. All in all, this mower is a ton better than my previous one.Pros - Light - Easy to maneuver - Powerful - Deck hangs out slightly past wheels to get edges betterCons - The battery life isn't good, you'll likely need an additional battery - Can't charge battery right away (I'll update this if the new charger fixes the problem) - Dual blades sometimes don't mulch well in thick areas