Disclosed herein is a genuine product battery identification system for mobile devices. A tag for identifying whether a battery is a genuine product battery is included a battery, and a reader for transmitting and receiving radio frequency information is included in a mobile device body. When the battery is mounted in the mobile device body, the mobile device is operated with power supplied from the battery, and the genuine product battery identification system determines whether the battery is a genuine product battery through radio frequency. When it is determined that the battery is the genuine product battery, power is continuously received from the battery to the mobile device, by which the mobile device is normally operated. When it is determined that the battery is not the genuine product battery, on the other hand, the reception of power from the battery to the mobile device is interrupted, whereby problems caused due to the use of a non-genuine product battery are fundamentally solved.