CHARGING DEVICE

A battery charger 1A, on which power conversion components 11,81,3,4,5,7,9 for converting commercial power into direct current power are mounted, in that the power conversion components include a power breaker 11 for switching input alternate current power ON/OFF, a power conversion circuit 3 for converting the input alternate current power into predetermined alternate current power, a voltage conversion circuit 4 for converting the predetermined alternate current power into a predetermined voltage, and a rectifier circuit 5 for converting alternate current power converted into the predetermined voltage, comprises a core frame 14 on which the power conversion components are mounted, outer housings 15a,15b so attached to the core frame as to cover the core frame, wherein the power breaker, the power conversion circuit, the rectifier circuit, and the voltage conversion circuit are mounted in this order on the core frame.