Cordless Phone Battery 800MAH for BP-446 BT-446 BT-1005 For Uniden T-400/500/600 series 3.6V/800MAH NiMH Rechargeable Battery High Quality Replacement battery manufactured by ABCENT INC Designed to meet or exceed performance of original battery. Unique design only allows battery connector to be installed one way, preventing short circuiting of the battery and device