6.0Ah Battery Replacement for Kobalt 40V Battery, 240Wh 1200+ Cycles Li-ion Battery, Fits 45+ Kobalt 40V Max Tools String Trimmer, Lawn Mower, Leaf Blower

What It Is

This is a 6.0Ah (240Wh) lithium-ion replacement battery for Kobalt 40V Max outdoor power equipment. It’s designed for high-drain tools like string trimmers, lawn mowers, and leaf blowers, offering extended runtime over standard 2.0Ah or 4.0Ah packs.

Fitment & Compatibility

• Exact fit: Works with all Kobalt 40V Max tools (lawn mowers, trimmers, blowers, chainsaws, etc.) that use the standard slide-on battery interface.
• Check your tool: Look for “40V Max” on the tool body or battery slot. This battery does not fit Kobalt 24V, 80V, or older 40V non-Max models.
• OEM vs aftermarket: This is a third-party replacement, not Kobalt OEM. It will fit physically and electrically, but may not have the same internal BMS (Battery Management System) or warranty coverage.
• Measurements: Roughly 5.5” x 3.5” x 3.5”. Confirm your tool’s battery compartment is deep enough for the 6.0Ah pack (slightly thicker than a 2.0Ah unit).

Key Things to Know

• Quality & cycles: Claims 1200+ charge cycles (vs ~500-800 for typical OEM). Real-world longevity depends on usage and charging habits.
• Installation: No tools needed; just slide onto the tool until it clicks. Ensure the latch engages fully—loose fit can cause intermittent power.
• Common gotchas:
  • Not compatible with Kobalt 40V chargers that require a specific “intelligent” handshake—test with your existing charger first.
  • May show a slightly lower voltage under heavy load compared to OEM, potentially reducing peak power on some tools.
  • No battery gauge included (most Kobalt OEM packs have a 3-LED indicator; this one does not).

Should You Buy It

Buy this if you need a budget-friendly, high-capacity spare for light to medium use and don’t mind losing the OEM warranty or battery gauge. Skip it if you rely on peak power for commercial-grade mowing or need the tool’s full runtime guarantee—stick with a genuine Kobalt 6.0Ah pack instead.