Add to Cart
Sign in to turn on 1-Click ordering.

Other Sellers on Amazon
Add to Cart
+ Free Shipping
Sold by: CPO Outlets
Add to Cart
+ Free Shipping
Sold by: stores123

Image Unavailable

Image not available for
  • GreenWorks 25302 Twin Force G-MAX 40V Li-Ion 20-Inch Cordless Lawn Mower with 2 Batteries and a Charger Inc.
  • Sorry, this item is not available in
  • Image not available
  • To view this video download Flash Player

GreenWorks 25302 Twin Force G-MAX 40V Li-Ion 20-Inch Cordless Lawn Mower with 2 Batteries and a Charger Inc.

| 59 answered questions

List Price: $399.00
Price: $349.00 & FREE Shipping. Details
You Save: $50.00 (13%)
In Stock.
Ships from and sold by Amazon.com.
Twin Force 20" Deck
  • G-MAX 40V Li-Ion Battery System powers multiple tools for complete yard work system--includes 2 Batteries and Charger
  • 20-Inch cutting deck offers a great balance of maneuverability and cutting capacity making it ideal for mid-sized areas
  • Innovative Smart Cut technology adjusts for power or runtime based on the thickness of your grass
  • Dual blades offer better cut quality, superior mulching and bagging capabilities
  • Automatic battery switchover pulls power from the second battery once the first is depleted to eliminate downtime
3 new from $349.00
Is this a gift? Please note that this item ships in its own packaging and cannot be gift-wrapped or concealed.
Special Shipping Information: Due to federal and international regulations, this product can only be shipped within the 50 states.

Pools Summer Sale
Pools Summer Sale
Save 20% Off Pool Care Products. Shop Now.

Frequently Bought Together

GreenWorks 25302 Twin Force G-MAX 40V Li-Ion 20-Inch Cordless Lawn Mower with 2 Batteries and a Charger Inc. + GreenWorks 21242 G-MAX 40V Li-Ion Cordless String Trimmer with 4ah Li-Ion Battery and Charger Inc. + GreenWorks 24252 G-MAX 40V Li-Ion Cordless Variable Speed Sweeper-40V 2 AH Li-Ion Battery Inc.
Price for all three: $653.98

These items are shipped from and sold by different sellers.

Buy the selected items together

Compare to Similar Mowers

This item: GreenWorks 25302 Twin Force G-MAX 40V Li-Ion 20-Inch Cordless Lawn Mower with 2 …

Black & Decker SPCM1936 19-Inch 36-Volt Cordless Electric Self-Propelled Lawn Mower With …

Black & Decker CM1936 19-Inch 36-Volt Cordless Electric Lawn Mower With Removable Battery

GreenWorks 25272 36-volt Self Propelled Cordless Mower, 19-Inch (Discontinued by Manufacturer)

Customer Rating 4.2 out of 5 stars   (328) 4.0 out of 5 stars   (649) 4.2 out of 5 stars   (586) 3.8 out of 5 stars   (31)
Price $349.00$397.00$309.99$309.99
Shipping FREE ShippingFREE ShippingFREE ShippingFREE Shipping
Sold By Amazon.comAmazon.comAmazon.comAmazon.com
Power Source Information not provided cordless-electric cordless-electric Information not provided
Length 29.2 inches 36.63 inches 36 inches 31.1 inches
Height 19.5 inches 20.5 inches 18.5 inches 15.2 inches
Width 20.66 inches 22.88 inches 22.75 inches 19.08 inches
Weight 50.5 pounds 106 pounds 72 pounds 73.8 pounds
  Add to CartAdd to CartAdd to CartAdd to Cart

Please help us improve this feature.  Tell us what you think of this feature.

Product Details

Size: Twin Force 20" Deck
  • Product Dimensions: 29.2 x 20.7 x 19.5 inches ; 50.5 pounds
  • Shipping Weight: 62 pounds (View shipping rates and policies)
  • Shipping: Currently, item can be shipped only within the U.S.
  • Origin: Imported (China)
  • Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
  • ASIN: B00GX9WNP2
  • Item model number: 25302
  • Batteries 2 Lithium ion batteries required. (included)
  • Average Customer Review: 4.2 out of 5 stars  See all reviews (328 customer reviews)
  • Amazon Best Sellers Rank: #869 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)

Product Description

Size: Twin Force 20" Deck

GreenWorks Twin Force G-MAX 40-Volt Li-Ion 20-Inch Mower

Powered by the GreenWorks G-MAX 40-volt lithium-ion system, this mower features a dual blade design for higher cutting efficiency, utilizing two 10-inch metal blades (offering a 20-inch cutting deck). For enhanced cutting capabilities, this mower also features dual motors to operate each of the 10-inch blades and a dual battery design to increase run time. Get up to 70 minutes of run time with the G-MAX 40-volt high-capacity 4 Ah and low capacity 2 Ah Lith-Ion Batteries (included with purchase). Adding an additional G-MAX 40-volt high-capacity 4 Ah battery (sold separately) gives you almost 2 hours of run time. You can operate the mower with one battery at a time or with two fully charged batteries for efficiency, power switches automatically to the next battery for ease of use. The cutting-edge lithium-ion technology allows your mower to run at full power to the very last bar with no memory effect after charging for a longer battery life cycle. This also means there is no more need for yearly maintenance, hard to manage pull cords, or spilling gas on your lawn. With the Twin Force G-MAX Lithium-Ion Mower, you can run through your yard quietly and without the fumes. The innovative dual blade design offers superior rear bagging and mulching capabilities. The single-lever height adjustment is strategically located on top of the mower making it easily accessible and offers a range of cutting height from 1-3/8 to 3-3/8 inches and weighs only 42.5 pounds — or half the weight of a typical gasoline powered mower. The power of the Twin Force mower allows you to cut through thick and wet grass with minimal issues with the GreenWorks Smart Cut technology, which senses the density of grass and delivers added power while mower for the highest efficiency of energy use while mowing. GreenWorks is Powered by Innovation and dedicated to provide quality and reliable lithium-ion lawn tools that can offer gas comparable performance.

Hands down, the quietest mower in the neighborhood without the hassle of gas.
View larger
Dual blade design for 20-inch cutting deck to offer greater cut performance. Blade Model: 29712
View larger
5-position single level height adjustment with 10-inch rear/8-inch front wheels for ease of use.
View larger
Superior mulching and rear bagging capabilities with 2-in-1 feature and twin blade technology.
View larger
Up to 70 minutes of run time with the included G-MAX 40-volt 4 aH and 2 aH batteries.
View larger
Compatible with GreenWorks G-MAX 40V system offers full range of lawn tools: 13 compatible tools.

What's in the box: GreenWorks Twin Force Mower, Rear Bag, Mulch Plug, one G-MAX 40-volt 4 Ah lithium-ion battery, one G-MAX 40-volt 2 Ah lithium-ion battery, charger, and owner's manual. Replacement blade model: 29712, ASIN: B00KA783HK.

Benefits of GreenWorks 40V Lithium-Ion System
  • SmartCut technology for greater battery efficiency, powerful performance and longer run time
  • Up to 50 percent better mulching than single bladed lawn mowers
  • Up to 50 percent less weight than comparable deck sized gasoline powered equipment
  • Up to 20 percent less noise than comparable deck sized gasoline powered equipment
  • Lithium-Ion technology runs at full power during its entire run time with no memory loss effect
  • Battery Charge: 60-minute for 2 Ah battery or 120 minutes for 4 Ah battery
  • No more oil spills, no more mixing of oil and gas, zero carbon emission, zero maintenance
  • Compatible with GreenWorks G-MAX 40-volt system with a total of 13 tools for a complete lawn care solution
  • Need more power? GreenWorks DigiPro Brushless Series is also compatible with the G-MAX System. Currently featuring the DigiPro Brushless Chainsaw, Blower/Vac and String Trimmer with attachment capability. GreenWorks DigiPro Brushless Series deliver gas performance without the hassle or maintenance requirements.

Customer Questions & Answers

Customer Reviews

Super quiet, super light, very easy to use.
Christian Billet
I get well over an hour's worth of mowing from a full charge of both batteries - more than enough to mow my lawn (lot is .4 acre, but only about half of that in lawn).
T. Rottmayer
They sell other mowers with different batteries, but I highly recommend to never buy anything that isn't lithium.

Most Helpful Customer Reviews

49 of 49 people found the following review helpful By A. Schuett on April 20, 2014
Size Name: Twin Force 20" Deck Verified Purchase
My wife and I wanted a mower that wasn't as loud and noisy as a gas mower, didn't require burning oil, and didn't vibrate as much. This mower fulfilled all of our wishes. We have a 1/3 acre lot, and this mower with two batteries works just fine. The only time we need to recharge the batteries half way through mowing is when we wait way too long between mowings, and the motors need to do some extra work to chop down the tall weeds. This mower is fairly easy to push, since it is much lighter weight than a gas mower. We also bought the electric trimmer that uses the same battery system, so we were sure to buy that kit with an extra charger and battery. Sometimes we use the extra battery, but it is nice to have just in case. Overall, I would buy this again and am quite satisfied.

Update 5/17/2014-
Still using this mower all the time, and it still works great. I've taken to only using one battery at a time, and keeping the other on the charger while mowing. Not sure it makes a difference, but I like it anyway to take a little break while mowing to switch batteries. When done mowing, I do tip the mower on its side and clean the underside. Some more expensive mowers have a water hose attachment to clean the underside, but I'm not sure I would spray water into the motor on this unit. :-) Using a stick works just as well, and seems to keep things working better.
1 Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
51 of 53 people found the following review helpful By June D. on April 29, 2014
Size Name: Twin Force 20" Deck Verified Purchase
Greenworks 25302 Twin Force.


Very cool looking and lightweight. Nice hard case clippings bag (but a little small). Nice easy height adjustment. I cannot comment on the longevity of the batteries as I have only had this mower a very short time, however as received they worked really well, charged quickly, and from a battery technology standpoint this seems to be a well executed concept. Auto battery selection while mowing is seamless.


If you like a well manicured lawn this is NOT the mower for you. On regularly mowed normal height grass it produces a very ragged cut, even after several passes. If you have a need to mow anything taller than normal grass (edge of cutting area, high grass, weeds, or plants) it will only flatten them down and pass over them without cutting them. If it manages to cut them it will not mulch them or collect them. Basically anything tall does not cut easily or mulch. Twin blades simply do not compare to single blade mower. Blades actually do not overlap to produce a clean 20" cut. What you basically have are (2) 10" trimmers with hard blades under the deck working side by side.

Safety toe guard is very flexible rubber, is way too flexible, and way too short. When mower is moved backwards it immediately folds right under the deck and offers NO PROTECTION from rolling back over your toes. If this was a normal full bladed mower I am sure it would be damaged by blade contact. This is an important safety feature and is something I have seen in independent reviews on the net. The company must be aware of if it, even if it only performs cursory product reliability and design tests, and has chosen not modify or improve.
Read more ›
7 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
37 of 40 people found the following review helpful By David Gableman on May 19, 2013
Size Name: 16" Deck Verified Purchase
I needed a lightweight, small lawn mower for the trim around my house. II was hoping this small, lightweight product would do the trick, and it does. I wish I could say I purchased this product to help the environment and save the whales, but I was really just looking for something that would be easy to use, require little maintenance, and be small and not take up too much room.


- Small, lightweight
- Very maneuverable to get into the small places my riding mower cannot
- Wide range of height adjustments (issue with the previous model I think)
- "Senses" deeper grass and speeds provides more power for such situations. I know someone complained about this, not sure why. It's a simple approach but effective.
- Quiet. It's about as loud as a fan.
- Easy to use. It was ready in 5 minutes (plus battery charging time). I did have to read the starting instructions (push button, pull bar) because I was just pushing the button and it wasn't starting at first.
- Battery life: for me, this is just trim work around the house. I can use it 3-4 times before having to charge the battery again.

- The handle connection at the base of the mower seems a little flimsy, hopefully it will hold up over time
- I wish they provided better instructions on the battery....should I charge it when it is fully discharged? Should I charge it after every use? Does it matter? I've opted to charge it when it is almost fully drained, hope that is OK. (It's also possible they did provide instructions but in my limited scanning did not see such comments).

Overall, I could not ask for much more. No longer do I have to keep a gas-powered mower around for the light work around the yard. I can't comment on how this would work for full-sized yards, but as a trimming mower it is absolutely perfect.
4 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
38 of 41 people found the following review helpful By Jonathan Sprenke on March 31, 2014
Size Name: Twin Force 20" Deck Verified Purchase
Quality control issues. Same defect on two of these. Broken / bad weld on assembly that raises and lowers the mower. Had to to return twice. Very disappointed as the lithium batteries and the light weight of the mower seemed like a winner. But lack of quality at such a high price is not a good sign at all.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again

Most Recent Customer Reviews