POWER STORAGE DEVICE

A power storage device includes a first electrode assembly, a second electrode assembly, and a housing case. The housing case includes a first end plate and a second end plate on which an exhaust valve is formed, The first electrode assembly and the second electrode assembly are disposed such that a first winding axis and a second winding axis pass through the first end plate and the second end plate. The first electrode assembly has a first hollow portion formed therein. The second electrode assembly has a second hollow portion. When the exhaust valve is viewed in plan view from an axial direction, the exhaust valve is disposed so as to be away from at least one of a first hollow portion and a second hollow portion.