Greenworks 80V 21" Brushless Cordless (Self-Propelled) Lawn Mower (75+ Compatible Tools), 4.0Ah

The Greenworks 80V 21-inch cordless lawn mower delivers gas-like cutting performance without the mess of oil, fuel, or exhaust emissions. Powered by an included 4.0Ah battery, it provides up to 45 minutes of run-time to help you tackle yard work quickly. A push-button start gets the brushless motor running immediately, offering quiet operation and reliable torque for routine yard maintenance.

Built around a sturdy 21-inch steel deck, this mower handles larger grassy areas with ease. The rear-wheel drive self-propelled system features variable speed control, giving you solid traction and responsive maneuverability around landscaping. To optimize battery efficiency and cut quality, built-in SmartCut technology actively senses the grass thickness and auto-adapts cutting power on the fly.

Yard cleanup options are flexible thanks to a 3-in-1 design that allows mulching, rear bagging, or side discharge. Adjusting the cut is straightforward with a single lever that selects across 7 distinct height positions. When the job is done, the machine folds into vertical storage to free up to 70 percent of garage floor space.

Keep in mind that total run-time tops out at 45 minutes and will vary depending on operator technique and how thick or overgrown your grass is. If you manage a very large property, you may need additional batteries from the 75+ compatible tool ecosystem to finish the entire lawn in one session.

Verdict: This self-propelled cordless mower is an excellent choice for homeowners looking for strong cutting power, clean electric operation, and compact garage storage. It offers dependable performance and multi-mode versatility without the upkeep of gas engines.

• Voltage: 80V
• Battery Capacity: 4.0Ah
• Deck Size: 21-inch steel deck
• Motor Type: Brushless
• Drive System: Self-propelled, rear-wheel drive
• Cut Options: 3-in-1 (mulch, rear bag, side discharge)
• Height Adjustment: Single lever, 7 positions
• Maximum Run-Time: Up to 45 minutes

A great fit if you:

• Want gas-like power without dealing with gas, oil, or engine tune-ups.
• Need a self-propelled mower with variable speed for easier maneuvering.
• Have limited garage space and need vertical storage.
• Already use or plan to expand into the 80V 75+ compatible tool platform.

Consider something else if you:

• Need more than 45 minutes of continuous mowing on a single battery charge.
• Prefer an ultra-lightweight plastic deck over a 21-inch steel build.

How long does the battery last on a single charge?
The included 4.0Ah 80V battery provides up to 45 minutes of run-time, though actual duration varies depending on your operator technique and grass conditions.

What grass disposal options does this mower support?
It features a 3-in-1 design that allows you to mulch clippings, bag them from the rear, or use side discharge.

How does SmartCut technology work?
SmartCut technology automatically senses the thickness of the grass and adjusts motor power output to maintain cutting performance while managing efficiency.

How does the vertical storage feature help save space?
The mower is designed to be stored upright, which uses up to 70 percent less floor space in your garage or shed.