WIRELESS CHARGING UNIT

A wireless charging unit to be attached to a back surface of a side wall of a case in which an electronic device including internally a wireless power receiving coil is placed upright. The wireless charging unit includes a power supplying coil provided at a position facing the back surface of the side wall of the case to wirelessly supply power, circuit board connected to the power supplying coil to feed a current to the power supplying coil, and a housing that houses the circuit board. The center of the power supplying coil is located above the center of the housing in an in-plane direction of the power supplying coil.