Enegitech BT-446 3.6V,900mAh,Ni-MH, Rechargeable Cordless Phone Telephone Batteries for Uniden Models, Pack of 3 Package including: 3 packs battery Voltage: 3.6V . Capacity: 900mAh. Type: Replacement Battery. Chemistry: Ni-MH.Reachargeable: Yes. It has the function as same as original battery, but it is more of tangible benefits. The item is fulfilment by amazon, you can get it sooner