Fancy Buying 40V 6.0Ah Battery Replacement for GreenWorks G-MAX 40V Power Tools 29462 29252 20202 22262 25312 25322 20642 22272 27062 21242 (2 Pack)

What It Is

This is a 2-pack of 40V 6.0Ah lithium-ion replacement batteries for GreenWorks G-MAX 40V cordless lawn mowers, trimmers, blowers, and other power tools. Each battery delivers 40% more runtime than the standard 4.0Ah pack, suited for larger yards or extended use.

Fitment & Compatibility

Check your tool’s voltage and platform – these batteries only work with GreenWorks G-MAX 40V tools (not 60V, 80V, or other brands). Compatible models include 29462, 29252, 20202, 22262, 25312, 25322, 20642, 22272, 27062, and 21242.

Physical fit – measure your battery compartment depth and width. This battery is slightly taller than a standard 4.0Ah pack; ensure your mower or tool’s battery bay has enough clearance (most G-MAX models do, but some older trimmers may be tight).

OEM vs aftermarket – these are aftermarket replacements, not GreenWorks OEM. They may lack the same internal circuitry, so expect slightly shorter lifespan or reduced performance in cold weather compared to genuine GreenWorks batteries.

Charger compatibility – works with any GreenWorks G-MAX 40V charger (sold separately). The pack does not include a charger.

Key Things to Know

• Installation is trivial – slide the battery into the tool’s slot until it clicks. No tools or wiring required.
• Quality varies – some users report early cell failure or reduced capacity after 50–100 charge cycles. Check the seller’s return policy before buying.
• Weight – each 6.0Ah battery is ~2.5 lbs, noticeably heavier than a 4.0Ah pack. This can make handheld tools feel unbalanced.
• Storage – store at room temperature (50–80°F) to maximize lifespan. Avoid leaving on the charger overnight.

Should You Buy It

Right for budget-minded owners with multiple G-MAX 40V tools who need extra runtime for larger lawns or heavy-duty trimming. Not ideal if you demand OEM reliability, need a charger, or have older tools with tight battery compartments. Consider spending more for genuine GreenWorks batteries if long-term durability is critical.