BATTERY MODULE

To provide a battery module capable of suitably pressurizing a stack and having high energy density. Provided is a battery module including: a cell stack in which a plurality of battery cells are stacked, the battery cells including power generation elements and exterior bodies that cover the power generation elements, in which first through-holes penetrating through the plurality of battery cells in a stacking direction are provided at center portions of the plurality of battery cells, and a fastening member that fastens the cell stack is disposed in the first through-holes.