Replacement battery fits 8 RC compatible models. Specifications: 3000mAh, 7.2V, Ni-MH. Compatible with: Sears 315.111670, Sears 54021, CS-NS300D37C006, Craftsman 315.111670, Craftsman 54021, iRobot 13501 and 2 more compatible models. Replaces: RC CS-NS300D37C006. RC replacement battery designed for Cars devices. Designed for long-lasting power.