A battery module including: a plurality of battery cells arranged in a direction and each including a terminal portion on a first surface thereof; a pair of end plates each configured to face a wide surface of a battery cell at a respective outer end of the plurality of battery cells; side plates configured to support side surfaces of the battery cells at respective sides of the plurality of battery cells; and a cover configured to cover the first surfaces of the battery cells or second surfaces of the battery cells opposite the first surfaces, and a side plate of the side plates includes a bent portion that is bent to overlap with an end portion of the cover, and the cover is configured to press the bent portion.