HQRP Phone Battery compatible with AT&T/Lucent E2718B, E2727B, E2728B, E5905, E5908, E5909B Cordless Telephone plus Coaster HQRP&reg; Rechargeable Battery plus HQRP&reg; Coaster; Battery Voltage: 3.6V; Capacity: 1200 mAh; Ni-Mh; AA Cells; Keep in touch with friends and family and never miss a conversation; Compatible with Original Battery; 200 Days warranty!