HQRP Battery for Summer Infant 28010 28280&nbsp;02040-10 Video Monitor System + HQRP Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 3.7V; Capacity: 1100 mAh; Li-ion; 100% compatible with Original Battery; 1 Year Warranty!