Hitech - Replacement Battery for Motorola SP-50, HNN9018 2-Way Radios Replaces Motorola 2-way radio battery model HNN9018 Capacity: 1200mAh ; Voltage: 7.5V Chemistry: Ni-Cd Dimensions: 49mm (width) x 84mm (length) x 15.5mm (diameter) Fits Motorola 2-way radio model # SP-50