2 Pack 6000mAh 40V Lithium-ion Replacement Battery Compatible with Greenworks 40 Volt Battery Power Tools 29252 20202 22262 25312 25322 20642 22272 27062 29462 29472 Tools(NOT for Gen 1) (Black)

What It Is

This is a 2-pack of 6000mAh 40V lithium-ion replacement batteries designed for Greenworks 40V cordless lawn mowers, string trimmers, leaf blowers, and other outdoor power tools. Each battery provides extended runtime compared to standard 2.0Ah or 4.0Ah packs, ideal for larger yards or longer jobs.

Fitment & Compatibility

• Models confirmed compatible: 29252, 20202, 22262, 25312, 25322, 20642, 22272, 27062, 29462, 29472 (and many other 40V Greenworks tools).
• Critical – NOT for Gen 1: These will not fit original first-generation Greenworks 40V tools with the older, taller battery housing. Check your tool’s model number or battery slot shape: Gen 2+ have a shorter, wider battery base with a side latch.
• Charger compatibility: Works with any Greenworks 40V charger (e.g., 2901302, 29462, 29472). Does not include a charger.
• Physical dimensions: Each battery measures approximately 5.5” x 3.5” x 3.5”. Measure your battery compartment to ensure clearance – especially on mowers with covered decks.
• OEM vs aftermarket: This is an aftermarket replacement, not Greenworks OEM. It’s UL-listed and matched for voltage and capacity but may have slightly different plastic fit on some tools.

Key Things to Know

• Installation: No tools required – slide battery into tool’s slot until latch clicks. Ensure it’s fully seated; loose connections can cause intermittent power loss.
• Quality: 4.4 stars from 344 reviews indicates good reliability, but a small number report early failure or fitment issues on older Gen 2 tools. Test immediately upon arrival.
• Runtime: 6000mAh (6.0Ah) gives roughly 50-60 minutes of mowing on a 20” deck, or 90+ minutes on a string trimmer – about 50% more runtime than a standard 4.0Ah.
• Storage: Store at 40-80% charge in a cool, dry place. Do not leave on the charger for days – can shorten lifespan.

Should You Buy It

Buy this if you own a Greenworks 40V Gen 2 tool (not Gen 1) and need affordable, high-capacity backup batteries for larger yards or long trimming sessions. It’s a solid value for extended runtime without paying OEM prices, but skip it if you have older Gen 1 tools or need a single battery with a charger.