Patent ID: 8159182

Claim:
A mobile terminal comprising: a secondary cell; a contactless power transferring coil unit including a flat coil formed by winding a conductive wire into a spiral on a substantially flat plane, a magnetic film disposed so as to cover one entire flat surface of the flat coil, and a leaking flux detecting coil that is disposed in a periphery outside an outer edge of the flat coil and the magnetic film and detects leaking magnetic flux from the flat coil, the contactless power transferring coil unit using electromagnetic induction between the flat coil and a coil provided in a power transmitting apparatus for transmitting power according to a contactless power transferring method to receive power transmitted from the power transmitting apparatus according to the contactless power transferring method; a charging control circuit that controls charging of the secondary cell with the power received via the flat coil of the contactless power transferring coil unit; and a signal transmitting unit that transmits a signal, in accordance with leaking magnetic flux detected by the leaking flux detecting coil of the contactless power transferring coil unit, to the power transmitting apparatus.