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Greenworks

Greenworks 40V 20" Twin Blade Mower, 4.0Ah + 2.0Ah Battery

    • Based on 6,921 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, May 8
Order within 16 hours and 26 minutes
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Size: 40V 20" (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


UPC:


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


UPC: 841821010003


Global Trade Identification Number: 03


Manufacturer: Greenworks


Item Weight: 42.5 pounds


Country of Origin: Vietnam


Item model number: 25302


Batteries: 2 Lithium Ion batteries required. (included)


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 8

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.

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Top Amazon Reviews

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Size: 40V 20" (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. ... show more
Reviewed in the United States on February 23, 2015 by Kalo Alexandra
    • Great Battery Mower At Last: Quiet, convenient, green
Size: 40V 20" (4.0Ah + 2.0Ah)
UPDATE AFTER 9 YEARS: I bought this electric mower back in 2014. Now, in 2023, it's still going strong. Best lawn equipment purchase I ever made. So much quieter than my gas mower. No smelly fumes. Don't have to worry about storing or running out of gas. Don't have to change the oil. In fact, at the end of the season, I don't have to do anything except put it away. It's not self propelled, but the mower is so lightweight I don't even notice. In fact, when the grass isn't tall, I can push it at a pace faster than my old self-propelled gas mower. Remarkably the batteries are still going strong after nine years. Gas-powered lawn equipment pollutes worse than cars, but even if I didn't care at all about air quality I'd still recommend this mower because of how quiet and maintenance-free it is. Never going back to gas. Purchasing this Greenworks mower was a leap of faith for me. I have a very large (~10,000 sf) and somewhat hilly lawn, and for the past 15 years I've used a big, twin-bladed, 33" cutting path, 10.5 hp, self-propelled, four-speed, semi-pro Craftsman lawnmower. It was fast (I could do the whole yard in 40 minutes), but it was loud and required all the usual small-engine maintenance. I just mowed the lawn for the first time using the Greenworks battery-powered mower and I couldn't be happier. [Update September 12: I've now used the mower for a full season, May-September. After four and half months, I still love this mower.] I expected it to take much longer, because of the narrower cutting path, but it went faster than I expected because the mower is so light and maneuverable that I wasted less time doing turns. I was worried about it not being self-propelled, but again the light weight of the mower really made a difference. It was more of a workout that walking behind the Craftsman self-propelled mower, but not bad at all. I'd liken it to pushing a high-wheeled stroller with an infant on board. On this first pass, I took off the bag and used the mower in mulching mode. It worked very effectively, including on the occasional pine cone. My grass is mostly fescue, which is fairly thin, and the mower cut it easily and evenly. In a couple of thicker patches the electric engine rev'd up automatically and handled the denser turf just fine. Starting the mower is very simple -- push one button and pull back the lever. Much more convenient than starting my old lawnmower with its pull cord. One delightful (and unexpected) advantage is that the mower is much quieter than my old gas mower. I always used to wear ear protection when mowing, but didn't need to with this electric mower. My family reported that it was also much, much quieter inside the house. One thing I'm looking forward to is the lack of maintenance and not having to prep the mower for winter storage, or change the oil, or store gas. I can charge the batteries from our solar panels, which makes this a very green solution. I was surprised to learn recently that small gas-powered engines in lawn equipment are very dirty compared to modern cars, so this small change of mower makes a big difference in terms of my environmental footprint. The mower comes with two batteries, a 4ah and 2 ah. Both can be installed at the same time, and the mower automatically switches to the second battery when the first runs out. Unfortunately, the combination was not enough to finish my lawn. I wish there were an option of buying two 4ah batteries when purchasing the mower. A second 4ah battery is pretty expensive, but because Greenworks prices its bundles (i.e., piece of equipment together with a battery and charger) pretty aggressively relative to the cost of batteries alone, you can get a spare battery at fairly low marginal cost if you buy multiple Greenworks products. As it turned out, I also wanted a cordless electric leafblower, so I ordered a Greenworks leafblower plus battery and I now have three interchangeable batteries, which is enough for my lawn. Bottom line: This mower cuts smoothly and evenly, mulches well, does an average to large lawn on one charge, is light enough to push without needing to be self propelled, is much quieter than a gas mower, needs less maintenance than gas-powered small engines, and is seriously green (especially if you have solar panels like we do). For me, it makes mowing a lot more fun (or at least a lot less of a chore). Two thumbs up. Update May 5: I ordered this mower through Amazon. I ordered some additional items directly from Greenworks website. One of the packages arrived, but another got lost in transit. I emailed Greenworks over the weekend and received a reply first thing this morning that they would ship a replacement same day. The replacement arrived a couple days later. Couldn't ask for a faster or more complete resolution. So, in addition to really liking the product, I'm also impressed by the responsiveness of their customer service. I hope this company does well. ... show more
Reviewed in the United States on May 5, 2014 by Eliot Prescott

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