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

What It Is

This is the Greenworks 80V 21" self-propelled cordless lawn mower kit, including a 4.0Ah battery and rapid charger. It’s designed for residential lawn care on medium-to-large yards (up to 1/2 acre) and is part of Greenworks’ 80V system, which powers over 75 compatible tools.

Fitment & Compatibility

• Battery & Charger: The included 4.0Ah battery and rapid charger are compatible with all Greenworks 80V tools (trimmers, blowers, chainsaws, etc.). They are not interchangeable with Greenworks 40V or 60V systems.
• Deck Size: 21" steel deck – fits standard 21" cut paths. Check your yard’s terrain for self-propelled speed control (variable speed trigger).
• Model Specifics: Only fits Greenworks 80V mowers (model #25302 or similar). Does not fit older 80V mowers with a different battery bay shape (pre-2019). Verify your mower’s model number on the battery compartment label.
• OEM vs Aftermarket: This is OEM Greenworks. Aftermarket batteries may fit but often lack the same charge protection or runtime. Stick with OEM for warranty and safety.

Key Things to Know

• Battery Runtime: The 4.0Ah battery gives ~30-45 minutes on a single charge (depending on grass height and self-propelled use). Plan for a second battery if your yard is over 1/4 acre.
• Installation: No assembly required beyond attaching the handle and battery. The self-propelled drive is engaged by a handlebar lever – test it on a flat surface first.
• Common Gotcha: The LED lights are nice for low-light mowing but can drain the battery slightly. Turn them off if you don’t need them.
• Quality: Brushless motor is reliable, but the plastic deck can crack if hit hard against rocks or curbs. Avoid heavy debris.

Should You Buy It

Buy this if you have a medium yard (up to 1/2 acre) and already own other Greenworks 80V tools, or want to start an 80V system. It’s a solid, quiet mower with good runtime for the price, but skip it if you need a larger deck (22"+) or have a huge lawn (over 1/2 acre) – you’ll want a bigger battery or a gas mower.