2.4V; Long-lasting; 500mAh; NiMH; Rechargeable battery; Compatible with VTech(R) DS6401, VTech(R) DS6421, VTech(R) DS6421-2, VTech(R) DS6421-3, VTech(R) DS6421-4, VTech(R) DS6422, VTech(R) DS6422-4, VTech(R) DS6425, VTech(R) DS6425-2, VTech(R) DS6425-3, VTech(R) DS6425-4, VTech(R) DS6426, VTech(R) DS6426-3, VTech(R) DS6475, VTech(R) DS6475-2, VTech(R) DS6475-3 VTech(R) 89-1348-01, VTech(R) BT183482 & VTech(R) BT283482;