PMNN4065 PMNN4066A Battery for Motorola XPR4380 XPR6100 XPR6300 XPR6350 PR6380 Voltage: 7.4V Capacity: 1800 mAH Chemistry: Li-ion 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.