Abstract: A power supply device of an electronic device including: a body formed to wear or to carry in a user body; a support groove formed in an upper portion of the body and that receives the electronic device; an insertion groove formed to insert from the outside to the inside of the body; a battery inserted into the insertion groove and that charges power applied from the outside and that charges the electronic device through charged power; a first through hole punched in the support groove so that the electronic device and the battery contact; and a pressing portion that presses to enclose the electronic device received in the support groove and that is provided to receive in the body regardless of a shape or a size of the electronic device.