Abstract: A multi-function attachment includes a battery module including a frame, a circuit and an energy storage received in the frame; and a wireless charging module located at a side of the energy storage and coupled with the circuit, a space is defined in the frame to received the energy and the circuit therein, a window is defined on a side of the frame and an opening is defined on a top end of the frame, While the energy storage is received in the space of the frame, a side of the energy storage exposed toward the window and the edge of the window form a groove, and the wireless charging module is received in the groove and is coupled to the circuit.

Abstract: A mobile power assembly includes a battery coupled to a circuit, a signal receiving unit located at a side of the battery and coupled to the circuit, and a signal sending unit located at an opposite side of the battery and coupled to the circuit. The battery is charged by the signal receiving unit receiving signals, and the battery is discharged by the signal sending unit sending signals.

Abstract: A wireless charging battery includes a battery module, a circuit mounted on an end of the battery module, a signal receiving unit located on a side of the battery module, and a signal controlling unit located at an opposite side of the battery module and coupled with the circuit. A plurality of ports is formed on a top side of the circuit, the signal receiving unit and the signal controlling unit are arranged independently. The signal controlling unit has a plurality of contacting points. An electric device having the wireless charging battery is also provided.