Greenworks 40V 21" Cordless Battery Self-Propelled Lawn Mower: 5.0 Ah USB Batteries and Charger, LM2154S
Push / Walk-Behind mower · Model 2515402 · Residential-duty · Battery
$400 Greenworks list price
Manufacturer list price only — it excludes tax, freight, dealer setup and any local discount, and dealers set the final price.
The Greenworks 40V 21 in Cordless Battery Self-Propelled Lawn Mower is a residential-grade battery walk-behind mower, a quiet, low-maintenance choice for smaller yards, with a 21-inch deck and a 40 V battery. It weighs 67.2 lb (30.5 kg).
Also sold as: 40V 21 in Cordless Battery Self-Propelled Lawn Mower (Standard) · 40V 21 in Cordless Battery Self-Propelled Lawn Mower (Standard) · 40V 21 in Cordless Battery Self-Propelled Lawn Mower (Standard) · 40V 21 in Cordless Battery Self-Propelled Lawn Mower (Kit (battery & charger included)) · 40V 21 in Cordless Battery Self-Propelled Lawn Mower (Kit (battery & charger included)) · 40V 21 in Cordless Battery Self-Propelled Lawn Mower (Kit (battery & charger included))
At a glance
Compare similar mowers See how this mower compares with machines of a similar size and purpose.
Chosen by stated rules, not opinion: same class, a deck within 2 in of this one, the same kind of power and a compatible duty class, then the closest power, weight and price, with other makers preferred. Figures are the manufacturers’ published ones; nothing is estimated.
Engine
| Power Source | battery |
|---|---|
| Fuel Type | Battery / Electric |
Electrical
| Voltage | 40 V |
|---|
Deck
| Cutting Width | 21 in (533 mm) |
|---|---|
| Min Cut Height | 1.4 in (35 mm) |
| Max Cut Height | 4.1 in (103 mm) |
| Deck Material | Steel Stamped |
| Cut Positions | 7 |
Drive
| Drive Type | self-propelled |
|---|
Dimensions
| Weight | 67 lbs (30.5 kg) |
|---|
General
| Warranty | 3 yr |
|---|
Similar models
Other push / walk-behind mowers with comparable specs — including other brands — that buyers cross-shop with the 40V 21 in Cordless Battery Self-Propelled Lawn Mower.
Specs verified against the manufacturer spec sheet on Jun 6, 2026 — greenworkstools.com.
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Independent reference database. Specs compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.
What the specs work out to
Figures MowerFacts computes from Greenworks’s own numbers — not published by the manufacturer.
Gate & trailer fit
- 32 in gateFits
- 36 in gateFits
- 48 in gateFits
Needs at least 27 in of clearance (estimated).
Fit uses the deck width plus 6 in for the discharge chute, because Greenworks doesn't publish an overall width — measure before buying if a gate is tight.
Greenworks 40V 21 in Cordless Battery Self-Propelled Lawn Mower questions
What size deck is on the Greenworks 40V 21 in Cordless Battery Self-Propelled Lawn Mower?
The Greenworks 40V 21 in Cordless Battery Self-Propelled Lawn Mower has a 21-inch (533 mm) cutting deck with steel stamped construction.
How much does the Greenworks 40V 21 in Cordless Battery Self-Propelled Lawn Mower weigh?
The Greenworks 40V 21 in Cordless Battery Self-Propelled Lawn Mower weighs 67 lb (30.5 kg) as specified by Greenworks.
How much does the Greenworks 40V 21 in Cordless Battery Self-Propelled Lawn Mower cost?
Greenworks's published list price is $400, checked 23 October 2026. That excludes tax, freight, dealer setup and any local discount — dealers set the final price.
What is the Greenworks 40V 21 in Cordless Battery Self-Propelled Lawn Mower built for?
Residential-duty push / walk-behind mower. Built for home-lawn use.
Source: Greenworks (manufacturer) · archived copy