Greenworks 80V 21" Cordless Push Lawn Mower – Brushless Motor, LED Lights, 4.0Ah Battery & Rapid Charger (75+ Compatible Tools) Review

Overview

The Greenworks 80V 21" Cordless Push Lawn Mower is a battery-electric mower designed for homeowners with medium-sized lawns (up to 1/3 acre) who want to ditch gas, oil, and pull cords without sacrificing power. It combines a brushless motor with an 80V lithium-ion battery platform, giving you gas-like torque in a quiet, zero-maintenance package. This is the mower for the eco-conscious suburbanite who also demands real cutting performance.

Who Should Buy This

• Homeowners with 1/4 to 1/3 acre lawns – The included 4.0Ah battery handles a typical 6,000–8,000 sq ft lawn on a single charge, making it a perfect fit for standard suburban lots. If your yard is larger, you’ll want a second battery.
• Gas mower converts tired of maintenance – If you’re done with stale fuel, oil changes, and carburetor cleaning, this mower’s brushless motor requires zero upkeep beyond blade sharpening. It starts every time with a button push.
• Quiet-neighborhood dwellers – At roughly 75 dB (about as loud as a vacuum cleaner), you can mow early Saturday morning without waking the block or needing earplugs. Your neighbors will thank you.
• Homeowners who already own Greenworks 80V tools – The battery and charger work across 75+ Greenworks 80V tools (trimmers, blowers, chainsaws, etc.), making this a seamless addition to an existing battery ecosystem.

Key Features Breakdown

• 80V 4.0Ah Battery & Rapid Charger – The 80V platform delivers higher voltage (and thus more torque) than typical 40V or 56V competitors, which means it cuts through thick grass without bogging down. The 4.0Ah battery gives about 35–45 minutes of runtime, and the rapid charger refills it in 60 minutes. That’s fast enough to charge while you trim.
• 21" Steel Deck – A 21-inch cutting width is the sweet spot for maneuverability and efficiency. It’s wide enough to cover ground quickly but narrow enough to fit through standard 36-inch gates. The steel deck is durable and won’t crack like some plastic decks.
• Brushless Motor – Brushless motors are more efficient, run cooler, and last longer than brushed motors. This translates to more runtime per charge and less maintenance over the mower’s life. You get consistent power even when the battery is low.
• 7-Position Single-Point Height Adjustment – One lever adjusts all four wheels simultaneously from 1.5 to 4 inches. That’s simpler than adjusting each wheel individually, and the range covers everything from a close Bermuda cut to a taller fescue setting.
• LED Headlights – Two bright LED lights on the front let you mow in twilight or early morning. They’re not gimmicky—they genuinely illuminate the cutting path, which is useful if you have a busy schedule.
• 75+ Tool Compatibility – The battery and charger work across Greenworks’ entire 80V line. If you already own a Greenworks 80V trimmer or blower, you’re buying a mower with batteries you already have. If you’re starting fresh, you can add tools later without buying new batteries.

Pros

1. Strong cutting power – The 80V brushless motor handles thick, damp grass and light weeds without stalling. It’s noticeably more capable than 40V mowers in the same price range.
2. Quiet operation – You can mow without ear protection and still hold a conversation. No gas fumes, no engine roar.
3. Instant start – Press a button and pull a bail. No primer bulb, no choke, no pull cord. This alone is worth the switch for many owners.
4. Excellent build quality – The steel deck feels solid, the wheels are sturdy, and the handle doesn’t wobble. It folds for compact storage.
5. Fast charging – The rapid charger is a real time-saver. A 60-minute charge means you can mow, take a break, and be back at it with a full battery.
6. LED lights are genuinely useful – They’re bright enough to see clippings and obstacles in low light, extending your mowing window.

Cons

1. No self-propulsion – This is a push mower. If your lawn has slopes or you’re not up for pushing, look at the self-propelled version. On flat ground, it’s fine, but hills will test your stamina.
2. Battery runtime is just adequate – The 4.0Ah battery covers about 6,000–8,000 sq ft. If your lawn is larger, you’ll need to buy a second battery, which costs around $200. The mower is sold as a kit, but the battery is the limiting factor.
3. Bag capacity is small – The 1.5-bushel bag fills quickly, especially in thick grass. You’ll be emptying it often. A larger bag would be welcome.
4. No mulching plug included – It comes with a side-discharge chute and a bag, but the mulching plug is sold separately. For a $400 mower, that feels like an oversight.

Bottom Line

The Greenworks 80V 21" Cordless Push Lawn Mower is a rock-solid choice for the gas-to-electric convert who wants real power without the headaches. It cuts well, starts instantly, and runs quietly, all while using a battery platform that expands across a huge tool family. The lack of self-propulsion and the so-so runtime are the main trade-offs, but for flat, medium-sized lawns, this mower delivers exceptional value at $399. If you’re tired of gas and ready for a cleaner, simpler mowing experience, this is one of the best buys in the cordless category. Just budget for a spare battery if your lawn pushes the limit.

Frequently Asked Questions

Q: Can I use a Greenworks 60V or 40V battery with this mower?
A: No. This mower requires the 80V battery platform. The 60V and 40V batteries have different voltage and connector designs and won’t fit or work. Stick with the included 4.0Ah 80V battery or buy additional 80V batteries.

Q: Does this mower mulch, and what do I need?
A: It can mulch, but the mulching plug is not included in the box. You’ll need to purchase Greenworks part #2903302 separately (about $15–20). The mower comes set up for bagging or side discharge out of the box.

Q: How long does the battery last on a full charge?
A: In typical conditions (grass 3–4 inches tall, dry, flat terrain), expect 35–45 minutes of continuous m