HQRP Cordless Phone Battery for AT&T/Lucent model 2422, SKU 23402, part number 89-0047-00-00/8900470000 Replacement plus Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 3.6V; Capacity: 350 mAh; Ni-Cd; Keep in touch with friends and family and never miss a conversation; Compatible with Original Battery; 200 Days warranty!