HQRP Battery for C Crane CC Observer, Solar Observer AM FM Weather Windup Emergency Radio COBS 3-2/3AA + HQRP Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 3.6V; Capacity: 600 mAh; Ni-Mh; 200 Days warranty!