29462 40V 6000mAh Replacement for Greenworks 40V Battery 29472 29252 20672 25312 20642 27062 20302 21302 22272 26272 24252 Compatible with Greenworks 40V GMAX Lithium Cordless Power Tools

What It Is

This is a 40V, 6000mAh replacement battery pack for Greenworks 40V GMAX cordless lawn mowers and power tools. It provides longer run time than standard 2Ah–4Ah packs, ideal for larger yards or heavy-duty trimming, leaf blowing, and chainsaw use.

Fitment & Compatibility

• Compatible models: 29472, 29252, 20672, 25312, 20642, 27062, 20302, 21302, 22272, 26272, 24252. Also fits any Greenworks 40V GMAX tool or mower that uses the slide-on battery interface (not the older push-button style).
• Physical check: Measure your existing battery compartment – this pack is 5.5" long x 4" wide x 3.5" tall. Confirm your charger is 40V (most Greenworks 40V chargers work, but avoid 60V or 80V chargers).
• OEM vs aftermarket: This is a third-party replacement, not Greenworks OEM. It will not communicate battery health or diagnostics with the tool’s BMS (battery management system) – expect basic power delivery only.

Key Things to Know

• Run time: 6000mAh delivers roughly 50% more run time than a 4Ah OEM pack. Expect 45–60 minutes on a standard 20" mower under medium grass.
• Installation: No tools required – slides directly into the battery tray. Ensure it clicks fully; a loose connection can cause intermittent power loss.
• Charging: Use only a 40V charger. Charging time is about 2–3 hours from empty. The pack has a built-in LED charge indicator (press the button to check level).
• Quality note: Some users report slightly shorter lifespan than OEM (2–3 seasons vs 3–4). Avoid leaving it on the charger for days – unplug once full to preserve cells.

Should You Buy It

Buy this if you need a budget-friendly, high-capacity backup battery for a Greenworks 40V mower or tool and don’t mind slightly shorter overall lifespan than OEM. It’s a solid value for light-to-medium use, but skip it if you rely on the battery’s integrated fuel-gauge accuracy or need warranty-backed reliability for daily heavy mowing.