Greenworks 24V 4.0Ah Lithium-Ion Battery (Genuine Greenworks Battery/ 125+ Compatible Tools)

What It Is

This is a genuine Greenworks 24V 4.0Ah lithium-ion battery, designed to power Greenworks 24V cordless lawn mowers, string trimmers, blowers, hedge trimmers, and over 125 other tools in the Greenworks 24V platform. It provides longer run time than the standard 2.0Ah battery, making it ideal for medium to large yards.

Fitment & Compatibility

• Brand & Model: Only fits Greenworks 24V tools. Not compatible with 40V or 80V Greenworks systems, or any other brand.
• Physical Check: Measure your existing battery compartment. The 4.0Ah battery is slightly taller than the 2.0Ah version—ensure your mower or tool has clearance for the extra height. Test fit before first use if upgrading from a smaller battery.
• OEM vs Aftermarket: This is a genuine Greenworks battery. Aftermarket alternatives may be cheaper but often lack the same safety circuits and may not fit as snugly. Stick with OEM for warranty and compatibility.
• Charger: Works with any Greenworks 24V charger (sold separately if you don’t have one). Does not include a charger.

Key Things to Know

• Run Time: Typically lasts 30–45 minutes on a 24V mower (depending on grass conditions). For a full 1/4-acre lawn, expect to use 1–2 batteries.
• Installation: Slide onto tool until it clicks. No tools required. If it doesn’t click, check for debris or damage on the battery terminals.
• Storage: Store at room temperature (50–80°F). Freezing or leaving in direct sun shortens lifespan. Charge to 50% for long-term storage (over 30 days).
• Gotcha: The 4.0Ah battery is heavier than the 2.0Ah—adds noticeable weight to handheld tools like trimmers. Not ideal for extended overhead use.

Should You Buy It

Buy this if you already own Greenworks 24V tools and need a longer-lasting battery for mowing or heavy trimming. It’s a solid upgrade from the 2.0Ah, but skip it if you only use lightweight tools (e.g., a small blower) where weight matters, or if you need a battery for a 40V or 80V system—those require a different voltage pack.