40V 4.0Ah Battery Replacement for GreenWorks 40V Battery 29472 29462 2901319 29252 20202 22262 25312 25322 20642 22272 27062 21242 G-Max Cordless Power Tools

What It Is

This is a 40V 4.0Ah lithium-ion replacement battery compatible with GreenWorks 40V G-Max cordless tools and equipment, including lawn mowers, string trimmers, blowers, and chainsaws. It powers machines that use the original GreenWorks 29472, 29462, 2901319, 29252, and other listed models.

Fitment & Compatibility

Before buying, verify your tool or charger uses the GreenWorks 40V G-Max platform (not 60V or 80V). Check your original battery’s part number—this replacement fits 29472, 29462, 2901319, 29252, 20202, 22262, 25312, 25322, 20642, 22272, 27062, and 21242. It works with any GreenWorks 40V charger. This battery is aftermarket (not OEM), so test it immediately upon arrival—some users report fitment issues with older model chargers or tight battery compartments. Measure your battery compartment depth: this unit is approximately 5.5" x 3.5" x 2.5". If your original battery is larger or has a different connector shape, this won’t work.

Key Things to Know

• Quality variance: Aftermarket batteries may have shorter lifespan than OEM GreenWorks; some users report 1-2 seasons of moderate use vs. 3-4 with original.
• Installation: No tools needed—slide battery into tool or charger until it clicks. If it doesn’t seat flush, check for debris or damage to rails.
• Charging compatibility: Works with all GreenWorks 40V chargers, but may charge slower (2-3 hours) than OEM. Avoid using with non-40V chargers.
• Common gotcha: Battery indicator lights may not be accurate on some units—test runtime on a full charge before relying on it for a full mowing session.

Should You Buy It

Buy this if you need a budget-friendly spare or replacement for a GreenWorks 40V tool and your original battery has failed or lost capacity. It’s a decent value for light-to-moderate use (small lawns, occasional trimming). Skip it if you need maximum runtime or reliability for heavy commercial work—an OEM battery is safer.