40V Cordless 20" Lawn Mower w/ 4.0 Ah Battery

In stock
Model
25302
$399.99
In stock
20-Inch Cordless Twin Force Lawn Mower is rated 4.5 out of 5 by 99.
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  • Includes one 40V 4.0 Ah battery, 2.0 Ah battery and charger
  • 3 Year Limited Tool & Battery Warranty

Perfect for yards up to 1/2 acre, Greenworks 40V tools are lightweight, start instantly, and require virtually no maintenance – no gas, no oil, no mess – but still deliver gas-like power.

  • Innovative Smart Cut™ technology automatically increases the speed of the blade when more power is needed
  • Dual blades offer better cut quality, superior mulching and bagging capabilities
  • Hassle free push button start
  • 20" cutting deck
  • 5 position single lever height adjustment allows for a cutting height range of 1-3/4" to 3-3/8"
  • 2-in-1 capability allows you to mulch or rear bag
  • Hard top rear bag indicates when the bag is full and needs to be emptied
  • Includes one 40V 4.0 Ah battery, 2.0 Ah battery and charger
  • 3 Year Limited Tool & Battery Warranty
Deck Size:
20 Inch
Deck Material:
Plastic
Deck Type:
Stamped
Cutting Heights:
5 Position
Max. Cutting Height:
3 3/8 Inch
Min. Cutting Height:
1 3/4 Inch
Front Wheels:
7 Inch
Rear Wheels:
10 Inch
Vertical Storage:
No
Smart Cut Technology:
Yes
Discharge Features:
2-in-1
Tool Warranty:
2 Year
Battery Warranty:
3 year
Battery Capacity:
4.0 Ah
Battery Capacity 2:
2.0 h
Replacement Charger:
29482
Replacement Battery:
29472, 29462
Replacement Mower Blades:
29712
  • (1) 40V Cordless 20" Lawn Mower
  • (1) Grass Collection Bag
  • (1) 4.0 Ah Battery
  • (1) 2.0 Ah Battery
  • (1) Battery Charger
  • (1) Owner's Manual

QUESTIONS & ANSWERS

Im thinking about purchasing this item but I live in Seattle and its very wet here in not sure if I will get electrocuted does anybody have any info on this

Asked by: dan1990
Hello dan1990 - We appreciate your interest in this product. In order to prevent electric shock, it is important to not operate the mower in damp or wet conditions.
Answered by: GreenWorks Support
Date published: 2021-02-16

Is charger work with 220 volt or 110?

Asked by: Aws qaisy
Hello Aws qaisy, Thank you for your question. Based on updated information, this charger has been designed for use on North American outlets of 120V only.
Answered by: GreenWorks Support
Date published: 2021-01-14

is the charger compatible with 220v in Europe

Asked by: Janek
Hello Janek, Thank you for your question. Based on updated information, this charger has been designed for use on North American outlets of 120V only.
Answered by: GreenWorks Support
Date published: 2021-01-14

Is this the only Dual blade mower you have? I'm looking for 1 in a pro series. Can you list the models that have dual blades as you can't filter by that key word?

Asked by: Airizzo
Hello Airizzo, Yes, this is our only dual blade unit in the GreenWorks G-Max 40v line at this time. Here is our other dual blade unit: https://www.greenworkstools.com/25-self-propelled-mower-2510802
Answered by: GreenWorks Support
Date published: 2020-09-21

can i get a mulching plug for this mower item number 34141486

Asked by: pager
Hello pager, Thank you for your question. For replacement part inquiries, please contact our helpline at 1-888-909-6757 and we will gladly assist you with this.
Answered by: GreenWorks
Date published: 2020-09-21

My mower acts like the batteries aren't charged when they are. I tried to switch the batteries just in case it was a connection thing but still no go. Help!

Asked by: Cattailimages
Hello Cattailimages, Please contact us at 1-888-909-6757 or by email to info@greenworkstools.com for further assistance. Please be advised we are currently experiencing delays due to the current pandemic COVID-19. We apologize for any inconvenience these delays may cause you. Thank you for your patience and understanding at this time.
Answered by: GreenWorks Support
Date published: 2020-09-16

I need replacement wheels for the rear part number 34102486 I need two wheels , I cannot find anywhere is there a replacement part for this wheels ??? if I don't get them then I have a total useless mower . Can You advise please 

Asked by: poolman1948
Hello poolman1948, Thank you for your question. With an item number (located in the manual) you can order from our third-party part site here: https://greenworks.ordertree.com/ Replacement parts can also be ordered directly from GreenWorks kindly contact us at 1-888-909-6757 (1-888-90WORKS).
Answered by: GreenWorks
Date published: 2020-09-09

Battery is fully charged but when I try to start the mower the light next to the battery just flashes quickly and the mower doesn't start. Any ideas?

Asked by: EG311
Hello EG311, Please try using the battery on the other side of the mower. If it works on the other side this would indicate there may be an issue with the battery compartment where the light is flashing. If this is the case, please contact support at info@greenworkstools.com for further assistance. Please be advised we are currently experiencing delays due to the current pandemic COVID-19. We apologize for any inconvenience these delays may cause you. Thank you for your patience and understanding at this time.
Answered by: GreenWorks Support
Date published: 2020-09-08
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CUSTOMER REVIEWS

Rated 5 out of 5 by from Superb, lightweight and very convenient I bought the G-Max 40V Twin Force 20-Inch Cordless Lawn Mower in February. Fortunately (for me), my wife loves yard work and I bought the mower for her. Of course, I volunteer to help. She was absolutely certain she wanted a self propelled, gas-powered mower. After reading dozens of reviews on the G-Max 40V telling us how lightweight it is etc, etc. I convinced her to try it. We are both extremely happy with the purchase. It is really very light. The easiest handling mower we have ever had. This led us to purchase more G-Max tools - blower, hedge-trimmer and edger. Adding a couple batteries means we are always ready to go. Thanks for a great product.
Date published: 2017-05-27
Rated 5 out of 5 by from 4 Year Warranty HONORED! I bought this mower online through Amazon Prime: April 30, 2017! Worked flawlessly up until Sept. 7, 2029 when the #2 Motor burnt out! Contacted Customer Service! They wanted me to take it to a service center for repair 40 miles from my home? After an hour of back and forth my rep. Kathrine announced that Greenworks was to send me a bran new unit by mail! I am to ‘box-up’ the old unit and Greenworks will send a Courier to my home to retrieve it! To me, this is 100% HONORING their product warranty and the HIGHEST form of CUSTOMER Satisfaction one could possibly hope for! Thank you GreenWorks! You are a testament to what a company should be! BRAVO
Date published: 2019-09-11
Rated 1 out of 5 by from Barely strong enough to handle a moderately yard 1 year of awful mowing. Dont bother attempting to mow if it has rained within the past 4 days and hasn't been hot and sunny since then. (Unless bagging) the shrouds don't have a proper discharge port so the clippings get caked up in the shroud - until you stop, scoop out the clippings, make a few passes and repeat. It only took about 3 months before it started whirring loudly, constantly going into the boost mode and batteries went from 1x 4ah battery being able to handle my yard to now requiring 1x 4ah, 1 2ah and my 2.5ah. Stays out of the elements and stored in a workshop. Don't bother.
Date published: 2018-08-14
Rated 5 out of 5 by from It just works! I own multiple Greenworks Tools - Leaf blower, string trimmer and a twin force 40v lawn mower. Moved to a new home with bugger yard so upgraded to this one. To me, Greenworks is the Apple of lawn tools. There is a thoughtfulness of their products not found in many other brands. Be it the battery indicator on the handle or the soft closing of the battery cover or the turbo mode for thick grass, these subtle features just enrich your experience with the products. This mower gets the job done as claimed. The ability of add an additional battery is awesome as well.
Date published: 2020-04-18
Rated 5 out of 5 by from Four years old and still going I purchased my 40V G-Max mower four years ago, and this mower is phenomenal. Living in Arizona, I have to mow year round, and even after all of this time the mower is still going strong. The body has held up to our harsh summers, the batteries still deliver the performance needed (although I did add a third battery to the mix for the times when the grass is extremely thick), and I have never had a problem getting through my 1/4 acre of grass. The mower is extremely lightweight, and it is so quiet that I have no problem mowing early in the morning or later in the evening when the kids are asleep. I have occasionally had problems with the mower stalling out when mulching, but this is typically because of dull blades. I pull them off with ease, sharpen them, and get back to business. This has been one fantastic mower, and it doesn't seem to be slowing down even after four years of hard use.
Date published: 2017-09-17
Rated 2 out of 5 by from Very light but poor cut quality I purchased this off Amazon less than a year ago and although the mower is quiet, light and easy to maneuver, I don't believe the two blade design is the best as it leave a lot of stands of grass sticking up and I need to do many second passes to get the lawn looking as it should. I wrote on my Amazon review that the power save feature (where the mower speeds up in thicker grass) should be manually triggered -- that would likely saved me from doing repeated second passes. I saw where Greenworks recommended to someone else on Amazon to raise the deck higher but that just means you need to lower it and again... make multiple passes. I would like to recommend this lawnmower but it takes me double the time to cut the lawn now and I know there are better options that can do it -- sadly I wasted $300+ on this ... lesson learned.
Date published: 2017-06-11
Rated 4 out of 5 by from Great Battery Life and Cuts - Unsure w/Twin Blades I've had the Greenworks 40V Electric Mower for about a year now and am just getting started this summer with mowing. Last year, I was a bit skeptical on the twin blade system because in our area of the neighborhood we have several dandelion patches. The mower would cut through most of them, but didn't "ramp-up" when I needed the power. This year it seems better and I'm not sure if the mower is just broke-in (only used it about 3 times before the cold came) or if I am more familiar with how to get the best out of it. The blades are now one notch from the top and my lawn looks much better with longer grass. I'm pleased this year to the point that I now own the Greenworks 13" trimmer, a blower, and chainsaw. Lastly, the convenience is awesome with a push button start, no gas, no fumes, no oil changes, no spark plugs, and no cords to pull! Greenworks is doing great and I hope their products only continue to get better.
Date published: 2017-05-11
Rated 5 out of 5 by from LOVE THIS MOWER! My daughter purchased one of these mowers last fall and absolutely loves it. This spring when my husband and I were considering purchasing a new mower, we had a chance to try out our daugher's. After years of dealing with gas, oil, pulling the cord to get it started and the weight of a traditional mower, we purchased this mower for our yard. I absolutely love it! So easy to start and use. Not as heavy and so quiet our neighbor commented that he didn't even know I was mowing. I just make sure to keep the batteries charged and I'm ready to go. Will be replacing other gas powered yard equipment in the near future. Wonderful product. I asked for this mower for my Mother's Day gift and its the best gift yet.
Date published: 2018-05-27
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  • REVIEWS, PRODUCT
Rated 5 out of 5 by from Superb, lightweight and very convenient I bought the G-Max 40V Twin Force 20-Inch Cordless Lawn Mower in February. Fortunately (for me), my wife loves yard work and I bought the mower for her. Of course, I volunteer to help. She was absolutely certain she wanted a self propelled, gas-powered mower. After reading dozens of reviews on the G-Max 40V telling us how lightweight it is etc, etc. I convinced her to try it. We are both extremely happy with the purchase. It is really very light. The easiest handling mower we have ever had. This led us to purchase more G-Max tools - blower, hedge-trimmer and edger. Adding a couple batteries means we are always ready to go. Thanks for a great product.
Date published: 2017-05-27
Rated 5 out of 5 by from 4 Year Warranty HONORED! I bought this mower online through Amazon Prime: April 30, 2017! Worked flawlessly up until Sept. 7, 2029 when the #2 Motor burnt out! Contacted Customer Service! They wanted me to take it to a service center for repair 40 miles from my home? After an hour of back and forth my rep. Kathrine announced that Greenworks was to send me a bran new unit by mail! I am to ‘box-up’ the old unit and Greenworks will send a Courier to my home to retrieve it! To me, this is 100% HONORING their product warranty and the HIGHEST form of CUSTOMER Satisfaction one could possibly hope for! Thank you GreenWorks! You are a testament to what a company should be! BRAVO
Date published: 2019-09-11
Rated 1 out of 5 by from Barely strong enough to handle a moderately yard 1 year of awful mowing. Dont bother attempting to mow if it has rained within the past 4 days and hasn't been hot and sunny since then. (Unless bagging) the shrouds don't have a proper discharge port so the clippings get caked up in the shroud - until you stop, scoop out the clippings, make a few passes and repeat. It only took about 3 months before it started whirring loudly, constantly going into the boost mode and batteries went from 1x 4ah battery being able to handle my yard to now requiring 1x 4ah, 1 2ah and my 2.5ah. Stays out of the elements and stored in a workshop. Don't bother.
Date published: 2018-08-14
Rated 5 out of 5 by from It just works! I own multiple Greenworks Tools - Leaf blower, string trimmer and a twin force 40v lawn mower. Moved to a new home with bugger yard so upgraded to this one. To me, Greenworks is the Apple of lawn tools. There is a thoughtfulness of their products not found in many other brands. Be it the battery indicator on the handle or the soft closing of the battery cover or the turbo mode for thick grass, these subtle features just enrich your experience with the products. This mower gets the job done as claimed. The ability of add an additional battery is awesome as well.
Date published: 2020-04-18
Rated 5 out of 5 by from Four years old and still going I purchased my 40V G-Max mower four years ago, and this mower is phenomenal. Living in Arizona, I have to mow year round, and even after all of this time the mower is still going strong. The body has held up to our harsh summers, the batteries still deliver the performance needed (although I did add a third battery to the mix for the times when the grass is extremely thick), and I have never had a problem getting through my 1/4 acre of grass. The mower is extremely lightweight, and it is so quiet that I have no problem mowing early in the morning or later in the evening when the kids are asleep. I have occasionally had problems with the mower stalling out when mulching, but this is typically because of dull blades. I pull them off with ease, sharpen them, and get back to business. This has been one fantastic mower, and it doesn't seem to be slowing down even after four years of hard use.
Date published: 2017-09-17
Rated 2 out of 5 by from Very light but poor cut quality I purchased this off Amazon less than a year ago and although the mower is quiet, light and easy to maneuver, I don't believe the two blade design is the best as it leave a lot of stands of grass sticking up and I need to do many second passes to get the lawn looking as it should. I wrote on my Amazon review that the power save feature (where the mower speeds up in thicker grass) should be manually triggered -- that would likely saved me from doing repeated second passes. I saw where Greenworks recommended to someone else on Amazon to raise the deck higher but that just means you need to lower it and again... make multiple passes. I would like to recommend this lawnmower but it takes me double the time to cut the lawn now and I know there are better options that can do it -- sadly I wasted $300+ on this ... lesson learned.
Date published: 2017-06-11
Rated 4 out of 5 by from Great Battery Life and Cuts - Unsure w/Twin Blades I've had the Greenworks 40V Electric Mower for about a year now and am just getting started this summer with mowing. Last year, I was a bit skeptical on the twin blade system because in our area of the neighborhood we have several dandelion patches. The mower would cut through most of them, but didn't "ramp-up" when I needed the power. This year it seems better and I'm not sure if the mower is just broke-in (only used it about 3 times before the cold came) or if I am more familiar with how to get the best out of it. The blades are now one notch from the top and my lawn looks much better with longer grass. I'm pleased this year to the point that I now own the Greenworks 13" trimmer, a blower, and chainsaw. Lastly, the convenience is awesome with a push button start, no gas, no fumes, no oil changes, no spark plugs, and no cords to pull! Greenworks is doing great and I hope their products only continue to get better.
Date published: 2017-05-11
Rated 5 out of 5 by from LOVE THIS MOWER! My daughter purchased one of these mowers last fall and absolutely loves it. This spring when my husband and I were considering purchasing a new mower, we had a chance to try out our daugher's. After years of dealing with gas, oil, pulling the cord to get it started and the weight of a traditional mower, we purchased this mower for our yard. I absolutely love it! So easy to start and use. Not as heavy and so quiet our neighbor commented that he didn't even know I was mowing. I just make sure to keep the batteries charged and I'm ready to go. Will be replacing other gas powered yard equipment in the near future. Wonderful product. I asked for this mower for my Mother's Day gift and its the best gift yet.
Date published: 2018-05-27
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