The DCB205 20V MAX* Premium XR 5.0Ah Lithium Ion Battery Pack provides immediate feedback on state of charge with the 3-LED Fuel Gauge System and has a lightweight design for easy transporting. 3-LED Fuel Gauge allows immediate feedback on state of charge No Memory and virtually no self-discharge for maximum productivity and less downtime Lightweight at 1.4 lbs and compatible with entire line of 20V MAX tools