This Hitachi battery charger is a reliable and efficient tool for charging Li-ion, Ni-MH, and Ni-Cd batteries ranging from 7.2V to 18V. It has been tested to ensure its functionality and safety. The charger can charge one battery at a time and is perfect for those who need to quickly charge their power tool batteries. Its sleek black color and compact design make it easy to store and transport. It is a must-have accessory for any power tool user.