Enercell 2.4V 800 mAh NI-CD Cordless Phone Battery for VTech BT175242 - Bulk Lot of 2 Batteries Price is for 2 batteries Use this battery as a replacement for VTech BT175242 and BT275242 batteries in your VTech phone. It fits VTech models CS6128-31, CS6128-42, CS6129-2, CS6129-3, CS6129-31, CS6129-32, CS6129-4, CS6129-41, CS6129-52, CS6129-54 and more. Delivers 2.4 volts with a capacity of 800mAh Can be used as a replacement for VTech BT175242 and BT275242 batteries