Designed specifically for Motorola handheld radios, the NTN7144A battery pack is composed of Nickel Cadmium, which allows it to hold a substantial charge of up to 1500 mAh, and is able to deliver up to 7.5 Volts of power. The battery pack functions in the following Motorola radio models: GP1200, GP900, HT1000, JT1000, MCS2500, MT2000, MTS2000, MTX8000, MTX9000.