The DEWALT DCB204 20V MAX Premium XR 4.0 AH Li-Ion Battery Pack is a bounty XR Lithium Ion that provides up to 33 % longer run-time than value 20V MAX battery packs. The 3-LED fuel gauge system straightaway feedback on state of charge. Tis battery no memory and virtually no self-discharge for boundary productivity and less downtime. It only if 1.42 lbs, allowing user boundary run-time in a grappler battery. This unit is with the stallion Line of DEWALT 20V MAX Tools.