2 Pack 40V 6.0Ah Replacement for Dewalt 40V Battery, Compatible with Dewalt 40 Volt Max Power Tools and Chargers DCB404 DCB406 DCB407 DCB114 DCB115 DCB116 DCB412 DCCS690B DCCS690X1 DCCS690H1 DCCS690M1

What It Is

This is a 2-pack of 40V 6.0Ah replacement batteries designed to power Dewalt 40V Max lawn mowers, trimmers, blowers, chainsaws, and other outdoor power tools. Each battery delivers 216Wh of energy (6.0Ah x 40V), offering extended runtime for medium-to-heavy yard work.

Fitment & Compatibility

• Works with: Dewalt 40V Max tools and chargers listed in the title (DCB404, DCB406, DCB407, DCB114, DCB115, DCB116, DCB412, DCCS690B/X1/H1/M1). Also compatible with Dewalt 40V mowers like DCMW220, DCMW225, DCMW240, and blowers like DCBL720, DCBL722.
• Check before buying: Ensure your tool or charger uses the Dewalt 40V Max (not 20V or 60V FlexVolt) platform. The battery has a slide-on mount—measure the battery slot on your tool (approx. 5.5"L x 3"W x 2.5"H) to confirm physical fit. It will not work with 18V, 20V, or 60V Dewalt tools.
• OEM vs aftermarket: This is a compatible replacement, not genuine Dewalt. It should charge on Dewalt 40V chargers (DCB114, DCB115, DCB116) but may not fully communicate charge status with all tool electronics.

Key Things to Know

• Quality: With only 2 reviews at 4.0 stars, consider this a gamble. Aftermarket batteries often use lower-grade cells, which can reduce lifespan and power delivery under heavy load (e.g., thick grass or continuous trimming).
• Installation: No tools needed—slide battery onto tool until it clicks. Ensure the locking tabs engage fully to avoid disconnection during use.
• Common gotchas: Some users report the battery indicator lights may not match actual charge level on certain tools. Also, if your charger has a “fault” light, the battery may not be recognized—try a different 40V charger.
• Price: $159.99 for two 6.0Ah batteries is competitive vs. OEM (which can cost $180–$200 each), but the lack of warranty or brand support is a risk.

Should You Buy It

Buy this 2-pack if you need budget-friendly spares for a Dewalt 40V mower or trimmer and don’t mind potential compatibility quirks or shorter lifespan. Skip it if you rely on peak performance for heavy-duty jobs, need a guaranteed fit with newer Dewalt tools, or prefer the reliability and warranty of OEM batteries.