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Greenworks 40V 21" Cordless Battery Self-Propelled Lawn Mower

Greenworks 40V 21" Cordless Battery Self-Propelled Lawn Mower

3.5· 31 ratings

Last price we saw

$399.99at Greenworks, last seen Nov 2

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Our take on the Greenworks 40V 21" Cordless Battery Self-Propelled Lawn Mower

The Greenworks 40V 21" is a battery-powered walk-behind mower with rear-wheel self-propulsion, a 21-inch steel deck and a brushless motor. It ships with one 5.0Ah 40V battery rated for up to 60 minutes of run time and about 1/3 acre of coverage. It cuts three ways: mulch, bag or side discharge, with seven height settings from 1 3/8 to 4 1/16 inches. At 67.2 lbs it is heavy for a cordless mower, and its 3.5-out-of-5 rating from 31 ratings suggests mixed owner satisfaction.

Best forSmall to mid-size suburban lawns up to about 1/3 acreHomeowners who want to drop gas cans and pull startsBuyers already on the Greenworks 40V battery platformMulching and bagging on flat to gently sloped yards
Pros
  • Push-button start, no gas, oil or pull cord
  • Self-propelled drive eases work on slopes and long strips
  • 21-inch steel deck with mulch, bag and side discharge
  • Brushless motor for longer life and better efficiency
  • Seven cutting heights, from 1 3/8 to 4 1/16 inches
  • Battery and charger included in the box
Cons
  • 67.2 lbs is heavy to push and to load into a truck
  • One battery: 60 minutes is best case, and tall wet grass drains it faster
  • 40V platform batteries are expensive to add for bigger yards
  • 3.5/5 owner rating points to real reliability or cut-quality complaints
  • Steel deck needs more care against rust than plastic

Greenworks 40V 21" Cordless Battery Self-Propelled Lawn Mower prices at every store

  • GreenworksCheck price at Greenworks

Greenworks 40V 21" Cordless Battery Self-Propelled Lawn Mower price history

Lowest price we've seen: $399.99 on Nov 2 at Greenworks. Tracked across 1 store since Nov 2.

What reviewers say

Owner feedback is mixed, averaging 3.5 out of 5 across 31 ratings. Buyers tend to like the quiet, fume-free operation and the self-propelled drive, while durability and battery life draw the most complaints.

Pros
  • Easy push-button start
  • Quiet compared with gas mowers
  • Self-propelled drive helps on slopes
  • Clean mulch and bag results on dry grass
Cons
  • Run time falls short in tall or wet grass
  • Reports of motor or drive problems over time
  • Heavy to maneuver and store
  • Replacement batteries cost a lot

Specifications

Mower Type
Walk Behind
Drive Type
Self-Propelled
Self Propelled
Yes
Power Source
Cordless Battery
Start Type
Push Button Start
Cutting Width
21 in
Bagging
Yes
Cutting Height Options
7 positions
Maximum Cutting Height
4 1/16 in
Minimum Cutting Height
1 3/8 in
Mulching
Yes
Side Discharge
Yes
Battery Runtime
Up to 60 min. (w/ included battery)
Battery Included
Yes
Battery Amp Hour
5.0Ah
Battery Voltage
40V
Number Of Batteries Included
1
Blade System
3-in-1 System (Mulch, Bag, Side Discharge)
Deck Material
Steel
Deck Size
21 in
Overall Dimensions
37.4" L x 23.6" W x 17.5" H (Package Dimensions)
Weight
67.2 lbs
Engine Type
Brushless
Coverage Area
Up to 1/3 Acre

Questions and answers

How long does the battery really last?
Greenworks rates the included 5.0Ah battery at up to 60 minutes, or about 1/3 acre. Expect less in tall, thick or wet grass, and more on light, frequent cuts.
Is it worth it over a gas mower?
For lawns up to about 1/3 acre, yes: no gas, oil, fumes or pull starts, and it is quieter. For larger lawns or very heavy growth, a gas mower or a second battery makes more sense.
Does it come with a battery and charger?
Yes. The kit includes one 40V 5.0Ah battery and a charger. Check the listing you buy from, since bare-tool versions of Greenworks mowers also exist.
Can I use other Greenworks 40V batteries in it?
Yes. Any Greenworks 40V battery works, and a larger amp-hour pack extends run time. The 40V platform also covers trimmers, blowers and chainsaws.
How do I switch between mulch, bag and side discharge?
It uses a 3-in-1 system: insert the mulch plug for mulching, attach the bag for collection, or fit the side-discharge chute. The plug and chute are included.
When is it cheapest?
Cordless mower prices drop in late fall and winter and around spring sales events. Watch the price history here and buy when it sits near its recent low.
What do buyers say about the Greenworks 40V 21" Cordless Battery Self-Propelled Lawn Mower?
Rated 3.5 out of 5 from 31 ratings.

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