Industrial Scientific MX4 120 V Charger with universal power adopter charges for up to six units. It is ideal for use with VTS-K1231100101, VTS-K1231101101, VTS-K1232110101, VTS-K1232111101, VTS-K1232100101, VTS-K1232101101, VTS-K5232100101, VTS-K5232101101, VTS-K5232110101 and 18107664-330.