NTN4824A/NTN5521A Ni-MH Battery for Motorola P200 HT600 MTX800 MT1000 Voltage: 9.6V Capacity: 1800 mAH Chemistry: Ni-MH Uses the highest quality A GRADE cells. Comprehensive testing including high altitude performance, vibration, mechanical shock, thermal cycling, external short circuit and overcharge test simulations.