3 Pack 2.4V 1600mAh Cordless Phone Battery for Vtech BT175242 BT275242 Sony BP-T50 BPT50 Presidian 43271 43-271 Empire CPB-472J CPB472J AT&T 50 91301 Ni-MH Replacement Rechargeable Battery Voltage: 2.4V Capacity: 1600mAh Compatible Brand: Vtech, Sony, AT&T, Dantona, Radio Shack, Sanyo Please search with model number of your original battery and phone for the right battery . If you have question about compatibility, please feel free to contact us.