2 Packs 12000mAh Replacement for Dewalt 20V MAX Battery, High-Capacity Lithium-Ion Battery Compatible with Dewalt DCB200 DCB201 DCB203 DCB204 DCB205 DCB206 DCB207 Series 20V Cordless Power Tools

What It Is

This is a two-pack of high-capacity 12,000mAh aftermarket lithium-ion batteries, designed as a drop-in replacement for Dewalt 20V MAX batteries. They power any Dewalt 20V cordless tool (mowers, trimmers, blowers, drills, saws) that accepts slide-pack batteries.

Fitment & Compatibility

• Works with: Dewalt 20V MAX tools using slide-pack batteries (DCB200, DCB201, DCB203, DCB204, DCB205, DCB206, DCB207 series). Fits most Dewalt 20V mowers, string trimmers, leaf blowers, and hedge trimmers.
• Does NOT fit: Dewalt 60V FlexVolt or 12V/18V NiCad tools. Not compatible with Dewalt chargers that lack 20V charging capability (older 18V NiCad chargers won’t work).
• Check before buying: Your Dewalt charger must accept 20V lithium packs (most yellow/black Dewalt chargers from 2010+ do). Measure battery compartment depth – these are slightly taller than OEM 5Ah packs due to higher capacity. Ensure physical clearance in tight tool housings.
• OEM vs aftermarket: No Dewalt warranty coverage. These are generic cells with no brand logo on the housing.

Key Things to Know

• Quality concerns: 3.9 stars from 19 reviews is low for a battery. Expect shorter lifespan and less consistent power delivery vs genuine Dewalt. Some users report cells failing within 6 months.
• Installation: No tools needed – slides on like OEM. May fit snugly on first use.
• Charging: Use only a Dewalt 20V lithium charger. Overcharging or using a non-compatible charger can damage cells or cause fire.
• Capacity vs runtime: 12,000mAh is roughly 2x a standard 6Ah pack. Runtime will be longer, but weight is noticeably heavier – not ideal for overhead or extended handheld use.

Should You Buy It

Buy only if you need maximum runtime at low cost and are comfortable with no warranty and potential reliability issues. Best for stationary tools (fan, radio, light) or mowers where weight isn’t critical. Skip for daily-driver tools or if you value long-term dependability – a single genuine Dewalt 6Ah is a safer bet.