HQRP Battery for Dt-Systems ST, ST PRO SERIES ST-100, ST-102, ST-200, ST-202, ST-300, ST-302 Remote Controlled Dog Training Collar Receiver, DT-GoodDog + Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 4.8V; Capacity: 330 mAh; Ni-Mh; Compatible with Original Battery; 200 Days warranty!