Worx 80V 21” brushless self-propelled lawn mower
Push / Walk-Behind mower · Model WG761 · Residential-duty · Battery
Worx doesn’t publish a list price for this model — it’s dealer quote only. The Worx product page is the place to start.
- Mows an acre in 166 min (116 at top speed) How long for your yard? ›
- How these are worked out ›
The Worx 80V 21” brushless self-propelled lawn mower is a residential-grade battery walk-behind mower, a quiet, low-maintenance choice for smaller yards, with a 20-inch deck and a 80 V battery. It weighs 77.2 lb (35 kg).
Also sold as: 80V 21’’ brushless lawn mower (Standard)
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 / Cordless |
Electrical
| Voltage | 80 V |
|---|---|
| Battery Capacity | 5 Ah |
Deck
| Cutting Width | 20 in (508 mm) |
|---|---|
| Min Cut Height | 1.6 in (40 mm) |
| Max Cut Height | 3.9 in (100 mm) |
| Deck Material | Steel |
| Cut Positions | 7 |
Drive
| Drive Type | rear-wheel drive |
|---|---|
| Ground Speed | 3.2 mph |
Dimensions
| Weight | 77 lbs (35 kg) |
|---|
General
| Bagger Capacity | 2 bu (70.5 L) |
|---|---|
| Warranty | 5 yr |
Similar models
Other push / walk-behind mowers with comparable specs — including other brands — that buyers cross-shop with the 80V 21” brushless self-propelled lawn mower.
Specs verified against the manufacturer spec sheet on Jun 6, 2026 — worx.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 Worx’s own numbers — not published by the manufacturer.
Mowing time
- ¼ acre41 min 29 min
- ½ acre1 h 23 min 58 min
- 1 acre2 h 46 min 1 h 56 min
- 2 acres5 h 31 min 3 h 52 min
About 166 min per acre at 0.36 acres/hour, mowing at 2.2 mph. The second figure is at the published 3.2 mph top speed (0.52 acres/hour) — faster than anyone really mows.
Gate & trailer fit
- 32 in gateFits
- 36 in gateFits
- 48 in gateFits
Needs at least 26 in of clearance (estimated).
Power & run time
- Battery energy400 Wh
Mowing times assume 0.36 acres/hour: deck width x 2.2 mph at 80% efficiency, which allows for overlap, turns and trimming. 2.2 mph is 70% of the 3.2 mph top speed Worx publishes - almost nobody mows flat out. The "at top speed" figure is the same sum at 3.2 mph, shown so you can see it.
Fit uses the deck width plus 6 in for the discharge chute, because Worx doesn't publish an overall width — measure before buying if a gate is tight.
Battery energy is voltage x amp-hours; run time depends on cut height, grass load and blade speed, so it isn't estimated here.
Worx 80V 21” brushless self-propelled lawn mower questions
What size deck is on the Worx 80V 21” brushless self-propelled lawn mower?
The Worx 80V 21” brushless self-propelled lawn mower has a 20-inch (508 mm) cutting deck with steel construction.
How much does the Worx 80V 21” brushless self-propelled lawn mower weigh?
The Worx 80V 21” brushless self-propelled lawn mower weighs 77 lb (35 kg) as specified by Worx.
How fast is the Worx 80V 21” brushless self-propelled lawn mower?
Top ground speed is 3.2 mph. With its 20-inch deck that works out to about 0.52 acres per hour at 80% efficiency — allowing for overlap, turns and trimming.
How long does the Worx 80V 21” brushless self-propelled lawn mower take to mow an acre?
About 1 h 55 min per acre, from its 20-inch deck at 3.2 mph and 80% efficiency — roughly 0.52 acres an hour, so five acres is about 9 h 37 min. Rough or obstacle-heavy ground takes longer; this is deck width times ground speed, not a timed test.
How much does the Worx 80V 21” brushless self-propelled lawn mower cost?
Worx doesn't publish a list price for the Worx 80V 21” brushless self-propelled lawn mower — it's sold on a dealer quote. MowerFacts records prices only where the manufacturer publishes them.
What is the Worx 80V 21” brushless self-propelled lawn mower built for?
Residential-duty push / walk-behind mower. Built for home-lawn use.
Source: Worx (manufacturer) · archived copy