The DEWALT DCB203 20V MAX Compact 2.0AH Li-Ion Battery Pack is a compact Lithium Ion pack that provides up to 33% longer run-time than standard 20V MAX battery packs. The 3-LED fuel gauge system gives immediate feedback on state of charge. This battery features no memory and virtually no self-discharge for maximum productivity and less downtime. It has a lightweight design and quick 35 minute charge time. This unit is compatible with the entire Line of DEWALT 20V MAX Tools.