HQRP Battery for Dogtra BP74T fits 2500T&B 2502T&B 3500NCP 3502NCP AE703048P6H AE683048P6H DC-31 Remote Controlled Dog Training Transmitter plus Coaster HQRP&reg; Rechargeable Transmitter Battery plus HQRP&reg; Coaster; Battery Voltage: 7.4V; Capacity: 1050 mAh; Li-Pol; 100% compatible with Original Battery; 200 Days warranty!