i'm going to build a stand alone charging station that has both a zip zap charging pad and a microsizer/bitchar-g pad. with a flip of a switch i'll be able to either run 1.5/3/4.5 volts of charging current to either pad or both at once. I decided to use c size batterys for longevity and feild use instead of a plug in type although I may add that option later down the road. I'll do a write up on it when i'm finished.