NiMH replacement Milwaukee 48-11-0100 battery provided by AtBatt.com is designed for use with the 6538-1, 6545-6, and more. Amstron power tool batteries are precision-engineered and rigorously tested for voltage, capacity, compatibility and safety to exceed original equipment manufacturer specifications. • Chemistry: NiMH • Rating: 2.4V 3000mAh • Dimensions (LxW): 3.82 x 1.11 in. • Warranty: 1 Year