Replacement battery for Uniden BT-909 Cordless Phone Battery, 4 Pack Rechargeable Cordless Phone Battery for Uniden BT-909 BT909 BT-1001 BT1001 BT-1004 BT1004 Cordless Telephone Battery Replacement Note:All the batteries have our logo "ele",you can only get guranteed from the brand TOPCHSNCES! Capacity: 800mAh,Voltage: 3.6V,Battery Type:NI-MH Short-circuit protection.It is very safety! Batteries are made with the highest quality materials High Quality cells that meet original Battery