The B4B AM-C2 2-channel charger is an intelligent gold mount Li-ion battery charger. With it’s “smart” AC Adaptor this unit, when plugged into AC current without any batteries attached, will function as a normal AC adaptor for your gear. Attach a battery (or two) and the AM-C2 can be used as a “power station” outputting battery power through the 4 Pin XLR. No longer will you have to choose between charging and power supply! The AM-C2 will charge 2 Batteries simultaneously Works with most Lithium chemistry Gold Mount batteries.