FERRYBOAT 6000mAh 40V Lithium Battery for Greenworks Replacement for Greenworks 40V Battery 29462 29252 20202 22262 25312 25322 20642 27062 21242 Compatible with Greenworks 40V Cordless Power Tools

What It Is

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

Fitment & Compatibility

• Brand compatibility: Works with all Greenworks 40V tools, but it is an aftermarket replacement – not OEM Greenworks. It is labeled as FERRYBOAT.
• Direct OEM replacement for: Greenworks 29462, 29252, 20202, 22262, 25312, 25322, 20642, 27062, 21242.
• Physical fit: Same slide-on form factor as standard Greenworks 40V batteries. Fits all Greenworks 40V tools that accept the original battery shape (most 40V models). Does not fit 60V or 80V tools.
• What to check before buying:
  • Confirm your tool is 40V (check label or manual).
  • Measure your original battery’s dimensions (this pack is roughly 5.5” x 4” x 3.5”) to ensure clearance in your mower’s battery compartment.
  • If you have a very old Greenworks tool (pre-2015), test fitment with a friend’s OEM 40V battery first – some early models had slightly different rails.

Key Things to Know

• Runtime vs. OEM: 6000mAh (6.0Ah) provides about 50% more run time than a standard 4.0Ah Greenworks pack. Ideal for mowing ¼ acre or more on one charge.
• Build quality: Aftermarket; may have slightly shorter lifespan than OEM. Check reviews for reports of early failure (some users note reduced capacity after 6–12 months).
• Installation: Tool-free slide-on. No adapter needed. Charge with any Greenworks 40V charger (original or aftermarket).
• Common gotcha: The battery’s charge indicator lights may not match OEM behavior – some units show full charge briefly then drop to 2 bars. This is normal for aftermarket BMS (battery management system).

Should You Buy It

Buy this if you need a budget-friendly, high-capacity backup for your Greenworks 40V tools and don’t mind slightly shorter overall battery life vs. OEM. It’s a solid value for light-to-medium use on mowers, trimmers, and blowers. Skip it if you demand OEM reliability for daily professional work – stick with genuine Greenworks batteries for that.