Auto-ranging input allows the charger to work in any country whose electrical system falls within a 100V - 240V range. Available with USA, European, UK, or Australian non-interchangeable AC plug. Can be used with a quality travel adapter (not included). This charger is perfect for travel at less than half the size of our previous model smart charger. For use only with NiMH battery packs for DS161, DS161, and DS125 strobes. Not suitable for use with lithium ion (li-ion) battery packs.