POWER SUPPLY APPARATUS FOR PORTABLE DEVICE

摘要

PURPOSE: A power supply device for a portable device is provided to improve economical efficiency by detachably holding a subsidiary battery part. CONSTITUTION: A power supply part (110) rectifies AC power to DC power. The power supply part supplies the DC power to a portable device. The power supply part supplies the power to a subsidiary battery part (120). The subsidiary battery part receives the DC power from the power supply part. The subsidiary battery part includes one or more subsidiary batteries and a USB charging port.