SEALED CELL AND CELL PACK

A sealed cell according to the present invention includes an angular case that accommodates an electrode body. The angular case includes a concave case main body , having an opening, and a sealing member . The case main body has a flat surface opposed to the sealing member , with the electrode body interposed therebetween, and a side wall rising from the flat surface . The peripheral edge portion of the opening provided in the case main body and the sealing member are joined to each other by seal welding. Concave and convex portions including concave portions recessed toward the inside of the case and convex portions flush with the flat surface are formed on at least one side portion of end sides of the flat surface . Electrode terminals are disposed on bottom surfaces of the concave portions