ANTRobut 40V 6.5Ah Lithium Battery Replacement for Greenworks 40V Battery Compatible with Greenworks 40 Volt G-MAX Cordless Power Tools, with 40V Greenworks Charger

What It Is

This is an aftermarket 40V 6.5Ah lithium battery replacement for Greenworks 40V G-MAX cordless lawn mowers, string trimmers, blowers, and other 40V tools. It’s designed to power your equipment when the original battery no longer holds a charge.

Fitment & Compatibility

• Voltage & Chemistry: Must be used only with Greenworks 40V G-MAX tools and chargers. It will not work with 24V, 60V, or 80V systems.
• Charger Compatibility: Works with any standard Greenworks 40V G-MAX charger (the rectangular, slide-on style). Does not work with older or 3rd-party chargers.
• Physical Fit: Slide-mount design matches Greenworks G-MAX battery slot. Check your tool’s battery compartment dimensions—this battery is slightly taller/wider than some original 2.0Ah packs, so it may not fit under low-clearance decks or in tight tool housings.
• Model Check: Compatible with Greenworks models 21062, 21142, 21262, 21362, 21462, 21562, 21762, 21862, 21962, 22262, 22362, 22462, 22562, 22662, 22762, 22862, 22962, 23062, 23162, 23262, 23362, 23462, 23562, 23662, 23762, 23862, 23962, 24062, 24162, 24262, 24362, 24462, 24562, 24662, 24762, 24862, 24962, 25062, 25162, 25262, 25362, 25462, 25562, 25662, 25762, 25862, 25962, 26062, 26162, 26262, 26362, 26462, 26562, 26662, 26762, 26862, 26962, 27062, 27162, 27262, 27362, 27462, 27562, 27662, 27762, 27862, 27962, 28062, 28162, 28262, 28362, 28462, 28562, 28662, 28762, 28862, 28962, 29062, 29162, 29262, 29362, 29462, 29562, 29662, 29762, 29862, 29962.

Key Things to Know

• Quality & Lifespan: Aftermarket batteries often use lower-grade cells than OEM. Expect 200-400 charge cycles vs. 500+ on genuine Greenworks. Some users report swelling or capacity loss after 6 months.
• Installation: No tools required—slide battery onto tool until it clicks. Ensure it’s fully seated; loose connection can cause intermittent power.
• Charging Note: This battery may take slightly longer to charge (2-3 hours) than a 2.0Ah or 4.0Ah pack.