HQRP Internal Battery for ICOM IC-4SA IC-4SE IC-CM8 IC-CM89 IC-4SAT IC-4SET Portable Transceiver/Two-Way Radio plus HQRP Coaster HQRP&reg; Rechargeable Internal Battery plus HQRP&reg; Coaster; Battery Voltage: 7.2V; Capacity: 600 mAh; Ni-Mh; 100% compatible with Original Battery; 200 Days warranty!