An electricity storage device comprises: a power generation element having electrodes; a can for housing the power generation element; a lid for sealing the opening of the can; external terminals disposed on the lid; and collectors for connecting the electrodes of the power generation element and the external terminals. The external terminals include: a bus-bar welding portion having a bus-bar welding surface to which a bus bar is welded; and a collector connecting portion having a caulking jig touch surface. The collector connecting portion includes an insertion portion, which is inserted into a through-hole of the lid and an end of which is caulked and fixed to the collector. The bus-bar welding portion and the collector connecting portion are provided integrally adjacent to each other on the lid. The jig touch surface extends from the bus-bar welding surface in the same surface as the bus-bar welding surface.