POWER STORAGE DEVICE AND METHOD OF MANUFACTURING SAME

In a power storage device, a welding portion at which a first conductive member and a second conductive member are welded is formed, an outer peripheral edge of a base portion includes a first portion located in a vicinity of the welding portion and a second portion other than the first portion, and the outer peripheral wall is not formed in the first portion, or a maximum value of a height of the outer peripheral wall in the first portion is lower than a maximum value of a height of an outer peripheral wall in the second portion.