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Greenworks

Greenworks 40V 20" Brushless Cordless Lawn Mower with 4.0Ah Battery & Charger(75+ Tool Compatibility)

  • Based on 154 reviews
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Availability: Only 4 left in stock, order soon!
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Arrives Saturday, Aug 1
Order within 19 hours and 23 minutes
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Size: 40V 20" Mower (4.0Ah) + LED Lights


Features

  • Powerful & Efficient Tackle up to 1/3 acre on a single charge* with the 40V 4.0Ah battery and high-torque brushless motor3x quieter than gas, with no fumes, no oil, and instant starts. (*Varies by grass conditions.)
  • 4-IN-1 Versatility Choose your cutting style: mulch for nutrients, bag for clippings, side discharge for tall grass, or turbo leaf pickup for heavy debrisall in one lightweight mower.
  • LED Headlight for Flexibility Mow early mornings or evenings with bright LED lights. Perfect for busy schedules!
  • Space-saving & Easy Storage Foldable aluminum handles save 70% space with vertical storage, and the single-lever 7-position height adjustment adapts to any lawn in seconds.
  • Durable & Maintenance-Free Steel cutting deck and brushless motor ensure long-lasting performanceno gas, no oil changes, no spark plugs, just consistent power.
  • 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 to a Smarter, Cleaner Lawn Care Solution The Greenworks 40V 20" battery-powered lawn mower Lawn Mower delivers gas-like power without the hassle—no fumes, no loud noise, and zero maintenance. Perfect for lawns up to 1/3 acre, this mower combines professional-grade performance with eco-friendly convenience. Why Choose This cordless electric Mower? 4-in-1 Flexibility – Switch between mulching, bagging, side discharge, and turbo leaf pickup for a pristine lawn in any season. LED Headlight – Extend your mowing time with high-visibility lighting for dawn or dusk. Lightweight & Compact – Aluminum handles fold vertically to save 70% storage space—ideal for sheds or garages. Effortless Adjustments – Single-lever 7-position cutting height (1.25"–3.75") adapts to grass length instantly. Whisper-Quiet Operation – 3x quieter than gas mowers, so you won’t disturb neighbors (or your peace!). Included: 40V 4.0Ah Lithium-Ion Battery Fast Charger Backed by Greenworks’ trusted reliability Go Gas-Free—Without Sacrificing Power!

Brand: Greenworks


Power Source: Battery Powered


Material: Plastic, Stainless Steel


Color: Green&Black


Style: Power


Cutting Width: 20 Inches


Operation Mode: Manual


Product Dimensions: 65"D x 23.63"W x 40.95"H


Number of Items: 1


Assembly Required: Yes


Brand Name: Greenworks


Model Number: MO40L415


Required Assembly: Yes


UPC: 195526150985


Manufacturer: Greenworks


Manufacturer Part Number: MO40L415


Unit Count: 1.0 Count


Item Type Name: Lawn Mower


Material Type: Plastic, Stainless Steel


Cutting width: 20 Inches


Item Dimensions D x W x H: 65"D x 23.63"W x 40.95"H


Power Source: Battery Powered


Operation Mode: Manual


Smart Home Compatibility: Not Smart Home Compatible


Maximum Adjustable Cutting Height: 4.5 Inches


Battery Average Life: 30 minutes


Minimum Adjustable Cutting Height: 1.5 Inches


Number of Positions: 7


Color: Green&Black


Style Name: Power


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Aug 1

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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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Smooth and powerful as a 40V
Size: 40V 20" Mower (4.0Ah) + LED Lights
Only used it for 1 time only so far and it is a good machine. I used an older version of 40v mower by greenworks as well. It finally broke down after 7 years of abuse. I wanted to utilize the batteries from it so I pull the trigger to this newer model of 40v. I found the new one is quieter and run smoother than the old machine. Also the trimming performance is better than the old one, and it comes with the turbo function to suck left and stuff which I haven’t tried yet. Another thing I found better is the push. I feel it’s lighter and easier to push . Could be the matter of the way the wheels it attached and also the wheel size. ... show more
Reviewed in the United States on September 12, 2025 by Donald AY
    • Won’t Start - Starts Now
Size: 40V 20" Mower (4.0Ah) + LED Lights
Review Image by Robert
Review Image by Robert
Review Image by Robert
Review Image by Robert
Original Review: Brand new and it won’t start. Followed all the instructions and it won’t start. Battery is fully charged and it won’t start. I’ll take it apart, repackage it, and return it, because it won’t start. I really wanted this to work, but it won’t start. Updated Review: When you use the proper starting sequence, the mower starts. I changed my rating from a 1 to a 5. Apologies to Greenworks. This was totally an instance of Operator Error (EO). The mower works great; clean cut, light weight, and easily maneuverable. ... show more
Reviewed in the United States on May 28, 2025 by Robert
    • Lawn mower
Size: 40V 20" Mower (4.0Ah) + LED Lights
Love it Light and so easy to start Holds charge to get our lawn finished and then some
Reviewed in the United States on July 3, 2026 by Karen Thomas
    • “Push start”/ hold lever combo is a nightmare; battery is horrible.
Size: 40V 20" Mower (4.0Ah) + LED Lights
Don’t bother wasting your time and money. If I can give this 0 stars, I would. To begin, the battery life is absolutely horrid. I had to buy a second battery just to finish my lawn (about 1/4 acre). A full charge will give you a solid 20-30 min runtime. Max. Nevermind what they advertise. And the battery isn’t cheap either. Secondly, the push start feature is seriously faulty and extremely frustrating. In fact, I’ve used the product three times and I’m always surprised when she starts up. It’s confusing and inconsistent. I’ve probably spent more time trying to start it up than actually mowing grass. I tried to do the noble thing and buy electric but forget it, this just isn’t a good product. Lastly, customer support didn’t help at all. I called to at least negotiate a credit since I was ONE day outside of my return policy but, they gave me nothing and just noted that they’re “really strict about their return/refund policy.” Makes complete sense. They give you 30 days (not sure how many times you can mow a lawn in 30 days) and after that, you’re stuck with garbage with no form of support. Don’t give this product a second thought. Buy elsewhere and/or buy gas. ... show more
Reviewed in the United States on June 5, 2025 by Eric A.
    • Highly Recommend
Size: 40V 20" Mower (4.0Ah) + LED Lights
Awesome mower. Very light weight and easy to push. I would recommend getting a 2nd battery if you have a larger yard.
Reviewed in the United States on May 2, 2026 by Amazon Customer
    • Adequate but not great
Size: 40V 20" Mower (4.0Ah) + LED Lights
Minuses- Doesn't cut as close or as evenly as my gas Cub Cadet. The battery is difficult to insert without slamming with my palm (ouch). The directions that came with it are 2mm high unreadable print. How much are they saving on ink and paper? I couldn't find directions any online for this model. Plus- Easy to start and maneuver. Not very noisy. ... show more
Reviewed in the United States on October 10, 2025 by J. Sierra
    • Buy extra batteries.
Size: 40V 20" Mower (4.0Ah) + LED Lights
Love this will never go back to gas lawn mower. I did have to buy a couple of extra batteries. One battery just doesn’t cut it for my yard.
Reviewed in the United States on June 27, 2026 by KM
    • Effective, WAY quieter than gas or even old corded electric
Size: 40V 20" Mower (4.0Ah) + LED Lights
This thing is awesome. It really DOES sweep up leaves, in addition to mulch/side discharge bag clippings. It doesnt say how to do it (hint: set the height just above what you are trying to sweep). Also it doesnt chop the leaves up much so you have to empty bag frequently. In general it cuts well, bags well, etc. Good idea to get a large, non-OEM spare battery if you have a big yard or heavy grass to cut. ... show more
Reviewed in the United States on December 8, 2025 by occasional buyer

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