A power storage module is provided with: a pair of end plates for clamping a plurality of secondary cells arranged in parallel in one direction; first and second cover members fixed to one end plate of the pair of end plates, the first and second cover members being arranged facing the top surface of an enclosure, an electrode terminal being provided on the top surface; through-holes formed in the first and second cover members, the through-holes extending in the one direction; and engaging protrusions provided to first cell holders, the engaging protrusions protruding in the direction in which the first and second cover members are arranged, and being engaged with the first and second cover members, with the engaging protrusions passed through the through-holes.