(2-Pack) Dog Collar Li-Po Battery - New - 7.4V Battery Replaces Dogtra 2302NCP, 2500T, 2500B, 2502T, 2502B, 3502NCP Receivers, 2302-NCP Advance, 3500-NCP Super-X, 3502-NCP Super-X Voltage: 7.4, Amperage: 800mAh, Chemistry: Li-Po Length: 1.930 Exell Battery Dog Collar Batteries