Greenworks
Greenworks 82V 21 Inch Self-Propelled Lawn Mower: High-Voltage Cordless Power
The Greenworks 82V 21" Self-Propelled Lawn Mower is a high-voltage cordless powerhouse built for large yards, packing an 82V battery system well above the industry average of 38V for gas-rivaling cutting performance with zero emissions. The 21-inch steel deck, rear-wheel drive, and 90-minute runtime make it one of the more capable battery-powered walk-behind mowers on the market.
It's best suited for homeowners with up to 1.5 acres who want to ditch gas maintenance without sacrificing capability.
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Last updated: . Based on our analysis of 364 lawn mowers.
What Sets It Apart
Key specification highlights based on our analysis.
21.0-Inch Cutting Deck
Wide cutting path reduces passes (walk-behind avg: 18.0 in)
Steel Cutting Deck
Durable steel deck for long-term use
3-in-1 Discharge
Mulch, side discharge, and rear bag (59 of 364 mowers have all three)
82V Battery System
High-voltage platform for more power (database avg: 38.1V)
Considerations
95.0 lbs
Heavier than average (walk-behind avg: 53.1 lbs)
Why We Recommend It
- 01.
82V / 8.0Ah battery system produces power comparable to a gas engine , handles thick, dense grass with ease according to customer feedback
- 02.
90-minute runtime is 71% above the database average of 52.7 minutes, making it viable for yards up to 65,340 sq ft (1.5 acres) on a single charge
- 03.
21-inch steel cutting deck is 3 inches wider than the walk-behind average (18 in), reducing total passes and mowing time
- 04.
3-in-1 discharge system (mulching, side discharge, rear bag) gives you full flexibility depending on grass conditions and season
- 05.
Push-button start and zero-maintenance battery platform eliminates oil changes, spark plugs, air filters, and fuel system upkeep
Considerations
- 01.
At 95 lbs, this mower is nearly double the walk-behind average of 53.1 lbs , it can be fatiguing to lift, store, or transport even with self-propelled drive
- 02.
Dual port charger is included but the 60-minute recharge time means you'll wait an hour between sessions if you run the battery down
- 03.
Customer reviews are mixed on maneuverability, suggesting the heavier build may feel cumbersome in tight spaces or around obstacles
Technical Specifications
| Feature | Specification |
|---|---|
| Mower Type | Self propelled |
| Power Source | Battery |
| Cutting Width | 21" |
| Deck Material | Steel |
| Blade Type | Rotary |
| Battery | 82V 8Ah |
| Runtime | 90 min |
| Drive | Rear wheel |
| Discharge | 3-in-1 (Mulch, Side, Bag) |
| Weight | 95 lbs |
| Start Type | Push button |
| Noise Level | 60 dB |
| Warranty | 2 years |
Power & Performance
The 82V battery system operates at more than double the voltage of the database average (38.1V), translating to higher blade tip speed and more consistent cutting power through thick or damp grass. Customers confirm it handles dense grass with ease, though results on very overgrown or wet turf can vary.
For typical residential grass types , fescue, bluegrass, bermuda, zoysia , the 82V platform provides more than adequate cutting force.
Cutting System
The 21-inch steel rotary deck is wider than most walk-behind competitors (average: 18 inches), which directly reduces the number of passes needed to cover your lawn , a meaningful time saver on larger properties. The steel construction adds durability and resistance to impact damage compared to plastic decks.
Cutting height is adjustable and the deck supports all three discharge modes: mulching returns clippings as fertilizer, side discharge handles high-growth situations, and rear bag collects clippings for a clean finish.
Drive & Handling
Rear-wheel drive self-propulsion delivers better hill traction than front-wheel drive systems because the weight of the mower stays over the drive wheels during operation. The mower weighs 95 lbs , substantially heavier than average , so while the self-propelled system manages forward motion well, maneuvering around tight corners, lifting over obstacles, or loading into a truck requires effort.
The handle design accommodates push-button start, keeping operation straightforward.
Battery / Fuel
The included 8.0Ah 82V battery delivers a 90-minute runtime, well above the category average of 52.7 minutes and enough to cover a 1.5-acre yard in a single charge session. The dual port charger fully replenishes the battery in approximately 60 minutes, so back-to-back use is feasible with a short break.
Because this is a battery-powered tool, there is no fuel to mix, no oil to change, and no seasonal maintenance , the charge, run, and store cycle is the entire maintenance routine.
Who Is This Mower For?
Ideal For
- ✓ Homeowners with large yards up to 1.5 acres (65,340 sq ft) , the 90-min runtime and 21-inch deck are specifically sized for this use case
- ✓ Eco-conscious users wanting zero direct emissions and quiet operation at ~60dB, roughly half the noise level of a typical gas mower
- ✓ Low-maintenance buyers who want to eliminate the annual ritual of oil changes, spark plug swaps, carburetor cleaning, and fuel stabilizer , push-button start means it's always ready
- ✓ Homeowners with moderately hilly terrain , rear-wheel drive provides noticeably better traction on slopes than front-wheel drive alternatives
Not Ideal For
- ✕ Small yard owners (under 1/4 acre) who don't need the extra runtime, voltage, or weight , a lighter 40V or 60V tool would be more practical and easier to store
- ✕ Users with very steep or heavily terraced terrain who may need a more powerful self-propelled system or even a gas mower for consistent hill-climbing torque
- ✕ Anyone with limited storage space , at 95 lbs and without easy vertical storage, this mower demands dedicated garage or shed floor space
Assembly is required out of the box and typically involves attaching the handle, installing the grass bag, and connecting the battery , most users report a straightforward 15-30 minute setup process. The push-button start means no priming or choking is needed once assembled.
Before first use, fully charge the 8.0Ah battery using the included dual port charger to ensure maximum 90-minute runtime from the start
Check handle height adjustment during assembly to set it for your height , proper ergonomics reduce fatigue on longer mowing sessions
Greenworks covers this mower with a 2-year warranty on both the tool and the 8.0Ah battery, which is solid warranty coverage for a cordless mower in this tier. The battery warranty is particularly notable since battery packs are typically the most premium replacement component , verify current warranty terms directly with Greenworks for full coverage details.
FAQ
How long does the battery last on the Greenworks 82V 21" lawn mower?
The included 8.0Ah 82V battery provides up to 90 minutes of runtime per charge, which is above average for cordless mowers (database average is 52.7 minutes). This is enough to cover most large residential yards up to approximately 65,340 sq ft (1.5 acres) in a single session.
Actual run-time will vary based on grass thickness, terrain, and drive speed settings.
How long does it take to charge the Greenworks 82V battery?
The included dual port charger fully recharges the 8.0Ah battery in approximately 60 minutes. The dual port design means you can charge two 82V batteries simultaneously if you own additional Greenworks 82V tools, making it convenient for back-to-back mowing sessions or charging a spare battery while mowing.
Is the Greenworks 82V self-propelled mower good for hills?
The rear-wheel drive self-propelled system provides better traction on hills and slopes than front-wheel drive designs, since the drive wheels stay weighted during operation. It's adequate for moderately sloped terrain.
However, for steep or severely uneven terrain, the 95-lb weight may make the mower more challenging to control on sharp inclines, and a gas-powered unit with more torque might be a better fit.
Does this Greenworks mower come with a bag?
Yes, the Greenworks 82V 21" mower supports 3-in-1 discharge: rear bag collection, side discharge, and mulching. The rear bag and mulching plug are included with the mower.
This gives you full flexibility , bag clippings for a clean look, mulch them back into the lawn as fertilizer, or side-discharge when dealing with heavy growth.
How does the Greenworks 82V compare to gas mowers in terms of power?
At 82 volts , more than double the average cordless mower voltage of 38.1V , this tool delivers cutting power that competes directly with many gas-engine mowers for typical residential conditions. Customer feedback confirms it handles thick grass with ease.
The key advantage over gas is the complete elimination of fuel, oil, spark plugs, and carburetor maintenance, while operating at a quieter ~60dB.
What is the warranty on the Greenworks 82V lawn mower?
Greenworks provides a 2-year warranty covering both the tool and the 8.0Ah battery. Battery warranty coverage is particularly valuable since battery packs represent a significant replacement investment.
Always register your product with Greenworks after purchase to ensure full warranty coverage is activated and verify current terms at the time of purchase.
Bottom Line
The Greenworks 82V 21" Self-Propelled Lawn Mower is one of the most capable battery-powered walk-behind mowers available, with an 82V high-voltage platform, 90-minute runtime, and 21-inch steel deck that collectively make it a genuine gas alternative for large properties. The 95-lb weight is the primary trade-off , it makes storage and maneuvering harder than lighter 40V or 60V options.
Buyers who prioritize power, runtime, and low maintenance over portability will find this mower an excellent fit.
Best for large suburban or rural yards up to 1.5 acres where battery runtime, cutting width, and zero-maintenance operation matter most.
Consider alternatives if you have a small yard under 1/4 acre, need easy vertical storage, or require maximum agility around dense landscaping.
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