Charge two Interchangeable Lens Camera batteries at once with the ProMaster Traveler+ Dual Battery Charger and ensure that you always have a fully charged spare. The Traveler+ Dual Charger is also a great solution for camera grips, which require two batteries. It works with a wide variety of lithium-ion Interchangeable Lens Camera batteries. The built-in USB power port lets you charge phones, tablets, and other USB devices, too.