Abstract: The battery module includes: battery stack configured to have a plurality of stacked batteries, batter stack including valve portion that releases a gas generated in each battery and output terminal; a plurality of bus bars configured to electrically connect output terminals of the plurality of batteries, the plurality of bus bars grouping the plurality of batteries into a plurality of battery units including at least two batteries, the plurality of bus bars connecting in parallel output terminals of batteries in each battery unit, the plurality of bus bars connecting in series battery units; and metal filter configured to be disposed between valve portion and output terminal in a first direction in which valve portion and output terminal are arranged and disposed, in stacking direction of batteries, within an extension range of battery belonging to a first terminal group to which a first bus bar of bus bars is fixed.