Masione 20V Max Replacement Battery for Dewalt Hammer Drill DCB204 DCB207 Premium XR Lithium Ion Rechargeable Battery Masione offer this 4.0ah extended battery for Dewalt 20V Cordless Drill Tools. It compatibles with DEWALT 20V MAX tools. This unit is a 4.0Ah high capactiy battery pack that has no memory and virtually no self-discharge for maximum productivity and less downtime. It offers a 3-LED fuel gauge system that allows immediate feedback on state of charge. Masione offer this high quality replacement battery, it comes with one year warranty for free exchange, if there are any issue with in the warranty, you can just contact us with your order ID for free exchange. Masione is responsible for the warranty of our batteries, Buy with Confidence! Notice: Please FULLY charge your rechargeable batteries before use. When in doubt, charge your batteries overnight (8 hours). Please fully cycle your batteries (fully charge, then fully discharge them) at least TWICE before regular use. DO NOT full charge your batteries before storing then for long periods of time. Discharge them as much as possible first.