4-Pack 12000mAh Replacement for Dewalt 20V Max Battery, Lithium Ion Battery Compatible with Dewalt DCB200 DCB201 DCB203 DCB204 DCB205 DCB206 DCB207 Series 20V Cordless Tools

What It Is

This is a 4-pack of 12,000mAh lithium-ion replacement batteries for Dewalt 20V Max cordless tools. They are designed to power lawn mowers, trimmers, blowers, and other 20V tools that use slide-pack batteries.

Fitment & Compatibility

Before buying, confirm your tool uses a Dewalt 20V Max slide-pack (not the older 18V NiCad or the newer FlexVolt 54V/60V). These batteries are aftermarket replacements and are compatible with Dewalt models DCB200, DCB201, DCB203, DCB204, DCB205, DCB206, and DCB207 series. They will not work with Dewalt chargers that require a specific communication protocol (some original Dewalt chargers may refuse to charge third-party packs). Check your charger model – if it’s a Dewalt DCB104, DCB107, or DCB115, it should work, but performance may vary. Also verify physical dimensions: these are slightly taller than OEM DCB205 packs, so ensure your mower’s battery compartment has clearance.

Key Things to Know

• Build quality: These are third-party cells, not genuine Dewalt. Capacity (12,000mAh) is likely overstated – expect real-world runtime roughly equal to a 5–6Ah OEM pack.
• Charging: May not charge on all Dewalt chargers; some chargers detect non-OEM cells and refuse to work. Test one pack first.
• Installation: No tools needed – slide on and off like any Dewalt battery. No modifications required.
• Warranty risk: Using aftermarket batteries can void your tool’s warranty if a failure occurs. Also, fire risk is higher than with OEM packs – store in a cool, dry place and never leave charging unattended.

Should You Buy It

This 4-pack is a budget option if you need multiple spare batteries for light-duty use (e.g., trimming, blowing) and already have Dewalt chargers that accept third-party packs. Not recommended for primary or heavy-use tools (e.g., mowers, chainsaws) where reliability and runtime consistency matter more than cost. If you value safety, warranty, and guaranteed performance, stick with genuine Dewalt batteries.