Greenworks 40V 21-in Brushless Push Mower (5.0Ah kit) Review (2026)
By The DIYPicks Team · Updated July 2026
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4.4$249Approx. street price for the 21-in brushless push kit with 5.0Ah battery and chargerCheck Price on Amazon →
- Small yards
- Battery
- Push
A brushless 40V push mower with a 21-in deck and rated ~45-min runtime; on specs it fits flat small yards under about a quarter acre where a self-propel feature is not worth the premium.
Pros
- Brushless motor and dual battery ports give a quiet, no-fuss entry into cordless mowing near a $250 spec price
- 3-in-1 deck covers bagging, mulching, and side discharge for typical suburban lawns
- Battery works across the large Greenworks 40V ecosystem of yard tools
Cons
- Push-only, so hills and thick turf take real effort compared with a self-propelled unit
- ~45-min rated runtime on one 5.0Ah battery limits it to smaller yards on a single charge
- 21-in steel deck plus battery is not the lightest push option to maneuver and store
Specifications
| Power | 40V battery (5.0Ah) |
|---|---|
| Deck | 21 in steel |
| Drive | Push (not self-propelled) |
| Runtime | Up to ~45 min (40V 5.0Ah) |
| Cutting height | 7 positions |
| Discharge | 3-in-1 bag / mulch / side discharge |
| Best for | Up to ~1/4 acre |