Greenworks 40V 21" Self-Propelled Cordless Lawn Mower – Brushless Motor, 5.0Ah Battery & Charger(75+ Tool Compatible)
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Availability:
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Saturday, Mar 21
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Size: 21" Self-Propelled (5.0Ah) + LED Lights
Features
- POWERFUL & EFFICIENT BRUSHLESS MOTOR Enjoy longer runtime, quieter operation (3x quieter than gas), and superior torque with a durable 21-inch steel deck for a flawless cut every time.
- SELF-PROPELLED WITH VARIABLE SPEED Effortless mowing with rear-wheel drive and adjustable speed control for maximum traction and maneuverability on any terrain.
- LED HEADLIGHT FOR NIGHT & EARLY MOWING Tackle your lawn anytime with bright LED lightsperfect for early mornings or late evenings without disturbing neighbors.
- 4-IN-1 VERSATILE MOWING SYSTEM Mulch, bag, side discharge, or turbo leaf pickupcustomize your lawn care to match your needs
- COMPLETE ECOSYSTEM VALUE - Includes battery, fast charger, grass bag & 3year tool + 3year battery warranty Works with 75+ Greenworks 40V tools(trimmers, blowers, chainsaws...)expand your cordless toolkit.
Description
Upgrade Your Lawn Care with the Greenworks 40V battery-powered Self-Propelled Mower! Tired of loud, smelly gas mowers? The Greenworks 40V 21" Cordless Lawn Mower delivers powerful, quiet, and eco-friendly performance—without the hassle of gas, oil, or cords! Why Choose This electric Mower? Self-Propelled & Easy to Use – Adjustable speed control lets you mow effortlessly. 4-in-1 Flexibility – Mulch for nutrients, bag for a clean finish, side-discharge, or turbo leaf pickup. LED Headlight for Extended Mowing – Cut grass early or late without visibility issues. Whisper-Quiet & Emission-Free – 3x quieter than gas, perfect for noise-sensitive neighborhoods. 5.0Ah Battery Included – Long runtime + compatibility with 75+ Greenworks 40V tools! Perfect For: Homeowners who want a clean, low-maintenance lawn Eco-conscious users who hate gas fumes and noise Anyone who values time-saving self-propelled power Get Yours Today & Experience the Future of Lawn Care!
Brand: Greenworks
Power Source: Battery Powered
Material: Plastic, Stainless Steel
Color: Green&Black
Style: Power
Item Weight: 73.86 Pounds
Cutting Width: 21 Inches
Operation Mode: Semi-Automatic
Product Dimensions: 65"D x 25.63"W x 40.95"H
Assembly Required: Yes
Brand: Greenworks
Power Source: Battery Powered
Material: Plastic, Stainless Steel
Color: Green&Black
Style: Power
Item Weight: 73.86 Pounds
Cutting Width: 21 Inches
Operation Mode: Semi-Automatic
Product Dimensions: 65"D x 25.63"W x 40.95"H
Assembly Required: Yes
UPC: 195526150992
Maximum Adjustable Cutting Height: 9.14 Centimeters
Battery Life: 5 Hours
Minimum Adjustable Cutting Height: 30.48 Centimeters
Manufacturer: Greenworks
Item Weight: 73.9 pounds
Item model number: MO40L517
Batteries: 1 Lithium Ion batteries required. (included)
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Mar 21
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: 16" (4.0Ah)
Have had this mower for several months now and am ready to offer my opinion ... I really do like this mower!! This is the first battery operated mower I have owned and was a bit worried when I bought it. We have a little over a 1/4 acre and our yard is mostly flat. Have had many gas powered mowers and was ready to try the battery craze!! And, I'm glad I did. The mower operates smoothly - is very quiet and light weight. Glad I did not opt to spend the extra money on self propelled. One battery will usually do the whole yard - about 35-45 minutes of run time. The height adjustment is easy - the few controls are easy - the whole process -- easy!! Loading the battery is simply. No vibration. No running to get gas in the can. No gas can in the garage. Very simple to operate and own. Does a nice job of cutting. I do the mulching option and will eventually try the bag just to see what it's like. Bought several other tools from this company and am happy with them all - and having extra batteries (the one battery fits all is a MUST and really works well). The only negative about this mower is the size - I purchased the smaller 16" cutting path and, although I really don't need bigger, it might save a little time (ok, just being a bit lazy to be honest!!). I would recommend this mower and this brand. Make sure each tool uses the same battery - just a suggestion - because it makes life easier with 3 batteries - there is always one charged and ready. (I also bought the weed eater and blower for those curious) Great product and I only hope I'm still this happy with it next year and the year after ..... happy mowing!
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Reviewed in the United States on August 9, 2025 by Joseph
Size: 16" (4.0Ah)
UPDATE: I'm going to bump my review up to 4 STARS (from 3). Yes, it was a weak on my first test because, as I said in the review below, the grass was wet and had been allowed to get way too long and thick - conditions that would even cause the gas mower a little hesitation (just not as much). Today was my second use with the lawn being in "typical" condition. The mower was delight - easy to use, cut neatly and quickly, and this time I put the grass catcher on correctly (!) and it worked BEAUTIFULLY, easily catching 90% of the trimmings. And I don't smell like gas. If it holds up, this mower will be a great purchase... as long as I avoid wet, month-long growth! UPDATE to the UPDATE: After a full season with this mower, I can heartily recommend it. Mowing is a breeze and it has performed flawlessly. Even my wife and daughter who had refused to mow the lawns now no longer have an excuse(!) and they really like it. Original review: PROS: * Set up was easy, just unfold the arms and tighten them down, charge the battery and insert. Insert the catch bag. * Maneuvers more easily than a heavy gas mower * Lithium-ion batteries should last longer and are lighter than lead-acid * No gas! No going to the gas station! Nor you do you smell like exhaust afterwards - just a little grassy! * Charges in 1 to 2 hours * Battery holds up pretty well - no cords! (really think about how annoying a cord would be going back and forth) * FAR quieter than gas CONS: * Definitely weaker than a gas engine * A bit pricey * Long term durability in question * Takes longer because footprint is smaller, and you have to go slower in tough conditions * Not good for huge lawns NEITHER HERE NOR THERE: * Mower is relatively light - half the weight of a conventional gas mower, but also mostly plastic. There's little to rust, but I wonder how durable it will be, especially those kinda cheap wheels that love to get jammed between the lawn and the cement edges. * Looks ridiculous. Like a kiddie version of a street racer from Fast and Furious. It's almost embarrassing to push this thing around the front yard. ;) Then again, you might think it looks pretty cool. Okay, so how well does it work? Today was kind of "worst case". The lawn was longer than normal (because the gas mower broke and it took me a week to get around to ordering this replacement) AND about 50% of the lawn was thick and QUITE WET. These are challenging conditions to be sure, but the gas mower would have handled them with only minor problem. This little guy really struggled with the longer, wetter grass. I had to go slower, and frequently back-off or lift off to keep from bogging down the motor. It quit on me once, but started right up again. I think I could have done the front lawn in about 5 minutes using the gas mower, but this took me about 12 minutes (UPDATE: second time, in normal conditions, it took about 7 minutes). With these conditions, I really questioned whether the battery was going to hold out for the 25 minutes or so that it would take to do my <1000 square feet of lawn, but it did. It still reported about a one-third charge upon completion. In the patches of lawn that were neither especially long, thick or wet, the mower flew over them with absolute ease. SO... if you frequently encounter EXTREME conditions (extra long, thick or wet grass) I'd advise you to stick with gas. This one will get the job done, but there's just no comparison to the power of an internal combustion engine. BUT... if you have a modestly sized lawn, and do not mow it wet and crazy long, then I think you will LOVE this mower. I'm looking forward to trying it again under better conditions so I can confirm this and report back to you.
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Reviewed in the United States on November 14, 2013 by Jeff and Wendy
Size: 16" (4.0Ah)
I couldn't spend too much, and didn't know what to expect, so because the lawn hadn't been mowed in at least a couple months- it was overgrown when I took possession a month ago, and is probably 7 inches long in some spots- I had to get a mower, and was overwhelmed with all the choices. I'm not mechanically inclined, & if anything can be done backwards, I always end up getting it backwards & have to redo it... Assembly of this out of the box was pretty easy. You just have to add the upper handle and the clipping-catch bag, and charge the battery. Now, some of the issues I had are probably due to the long and slightly-damp-underneath grass I had to cut. I may not get another chance to mow before it snows. It's been raining more days than it's been dry lately. I thought this mower would be sufficient because it said it could mow 1/3 an acre on a charge, which is about what I have between the back and front yard. I also have a pretty bad back, so I knew I wouldn't be able to do the entire lawn without a break at least every hour. I tend to overdo it, so if a dead battery forces me to stop & take a break, that is for the best. In the end, I only got half the back yard done yesterday on the one battery charge...and now it's raining again, which it's predicted to do until it starts snowing in a couple days. Part of the problem is also that there is a big tree in the back yard plus neighbor's trees dropping leaves into my yard, and I've been trying to get all the leaves off the ground before mowing, and it's impossible! I thought a thin layer of leaves would be okay, but no. It was just too much for the mower, with the grass so long too. I had to keep stopping to rake because the clippings were jamming up the blade and underneath. So I had to rake more leaves and bag up the clippings around it. Yes, it does have a catch bag, but only about half the clippings make it into the bag; the rest stay on the ground as mulch, even when you first start mowing! That part disappoints me, because after the mowing is done, you still have to rake up mounds of mulch (yes, I removedd the mulch piece because I didn't want any, but maybe I got that backwards). The manual did leave a few explanations out. It is kind of hard for me to push, but I am more than half disabled. I probably should have paid the extra approx. $200 for the self-propelled model- but that is so much money for someone on a fixed income. Again, I think a big part of the problem was the too overgrown grass. I first tried the shortest setting, but that was impossible to push over that heavy grass! I used setting 2, which was still hard to push, but with the days left before winter being so few, I had to. Hence my having to unjam it every few minutes. Next year I'll be able to mow more often, and not let it get so out of control! I didn't have the problem someone else mentioned about it stalling while pulling back on a hill. My yard is pretty hilly/bumpy in spots, but that wasn't a problem. The manual said all 4 wheels have to be on the ground, but if they briefly aren't, it still works. I haven't gotten to the part under the tree with all the acorns- I'll be wearing safety glasses as the manual instructs. I will still need an edger/weed whacker, because you can't get too close to the garden beds/walkway/fence/tree, etc. with this mower. I guess the same would be true for any mower. I do wish I had bought the wider model, and the 2-battery model. Lawn mowing with this model is a lot of work for me. But I think I'll keep it, and next year will vow to mow regularly so it doesn't jam so much. The biggest disappointment of all is that all the clippings don't make it into the bag, and that leaves on the ground can't be mowed over. Hopefully I won't be too crippled next year to mow, because I really want to get in shape, and this push mower is very good exercise! Also- I love the color, and it's cute and not TOO heavy. The battery is average power toll-size, so that doesn't add weight, just the mower body itself.
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Reviewed in the United States on November 8, 2025 by Star