Synergy Digital Dog Collar Battery, Compatible with Dogtra BP12RT Dog Collar Battery (Ni-MH, 4.8V, 400mAh)Specifications:Voltage: 4.8VCapacity: 400mAhComposition: Ni-MHCompatible Replacement for Batteries: Compatible with Dogtra GPRHC043M016, BP12RT, BP12Compatible with Dogtra Dog Collar(s): Transmitter 175NCP, Transmitter 200NC, Transmitter 200NCP, Transmitter 202NCP, Transmitter 280NCP, Transmitter 282NCP, Transmitter 1900NCP, Transmitter 1902NCP, Transmitter 300M, Transmitter 302M, Transmitter 7000M, Transmitter 7002M, Transmitter 7100H, Transmitter 7102H, Receiver 7100, Receiver 7102, Receiver 1100NC, Receiver 1200, Receiver 1900, Receiver 1500, Receiver 1600, Receiver 1700, Receiver 1800, Receiver 2200, Receiver 2000T, Receiver 2000B, Receiver 2000200NC, Transmitter 1400, Transmitter 1400NCP, Transmitter 1500, Transmitter 1500NCP, Transmitter 1600, Transmitter 1600NCP, Transmitter 1700, Transmitter 1700NCP, Transmitter 1800NC, Transmitter 1802NC, Transmitter 1803NC, Transmitter 1804NC, Transmitter 2000T, Transmitter 2000B, Transmitter 2000NC, Transmitter 2000NCP, Transmitter 2002T, Transmitter 2002B, Transmitter 2002NC, Transmitter 2002NCP , GPRHC043M016, BP12RT, 202NCP Transmitter, 200NCP Transmitter, 1500NCP, 282NCP Transmitter, YS500 Anti Bark Collar, Receiver 1900NCP, 1900NCP, 1902NCP, 280NCP Transmitter, 175NCP Transmitter