HQRP 2 pack Phone Battery for AT&T DECT 6.0 Cordless Phone System plus HQRP Coaster HQRP&reg; Two Rechargeable Batteries plus HQRP&reg; Coaster; Battery Voltage: 2.4V; Capacity: 850 mAh; Ni-Mh; Keep in touch with friends and family and never miss a conversation; Compatible with Original Battery; 200 Days warranty!