A charging apparatus for recognizing an adaptor is applied to an alternating current to direct current adaptor. The charging apparatus includes an input side universal serial bus interface, a data voltage detection unit, a microcontroller and a first charging power output unit. The data voltage detection unit detects a kind of the alternating current to direct current adaptor. The microcontroller determines an overall output charging power of the charging apparatus according to the kind of the alternating current to direct current adaptor. The microcontroller is configured to control the first charging power output unit to output the overall output charging power to a first battery.