GE Cordless Phone Rechargeable Battery, NiMH 3.6V 850mAh Battery Pack, Cordless Phone Handset Compatible, 76411 Fits many phones by Panasonic and more  compare battery shape, size and plug type for proper match with your device Replaces batteries of similar size and shape High capacity for longer talk and standby time 3.6V and a capacity rating of 850mAh Rechargeable Battery  battery must be charged for 16 hours before use (does not come with full charge)