HQRP Battery Kit for Dt-Systems EDT-100, EDT-102, EDT-200, EDT-202, EDT-300, EDT-302 Remote Controlled Dog Training Collar Receiver and Transmitter + Coaster HQRP&reg; Rechargeable Transmitter and Collar Batteries Replacement plus HQRP&reg; Coaster; Collar Battery Voltage: 4.8V; Capacity: 330 mAh; Ni-Mh; Transmitter Battery Voltage: 7.2V; Capacity: 350 mAh; Ni-Mh; Compatible with Original Battery; 200 Days warranty!