BATTERY PACK

A battery pack includes: a battery cell including a first surface and a second surface which are opposite each other and on which first and second electrodes are respectively formed, and a lateral surface connecting the first and second surfaces to each other; a first circuit board arranged on the first surface and connected to the first electrode; a second circuit board arranged on the second surface and connected to the second electrode; and a flexible wiring crossing the lateral surface of the battery cell and electrically connecting the first and second circuit boards to each other, and the first circuit board includes: a first compressible conductor on an inner surface of the first circuit board, the inner surface facing the first electrode; and a first pressing surface and a first mounting portion on an outer surface of the first circuit board.