A battery pack and a method of fabricating the same. The battery pack includes a bare cell including an electrode terminal, a protection circuit board electrically connected to the bare cell, the protection circuit board including a plurality of metal tabs arranged at opposite ends thereof, and a case surrounding the protection circuit board, the case being perforated by a plurality of first apertures arranged at locations that correspond to ones of the plurality of metal tabs. The method includes arranging a bare cell having a cap plate and an electrode terminal passing through a terminal aperture in the cap plate, electrically connecting a protection circuit board to the bare cell, the protection circuit board having metal tabs arranged at both ends thereof and arranging a case to surround the protection circuit board, the case being perforated by a plurality of first apertures that are arranged at locations that correspond to ones of the metal tabs.