POWER STORAGE MODULE

An electricity storage module (10) is provided with a stack (30) formed by stacking a plurality of electricity storage elements (32) having positive and negative lead terminals (34, 34) that protrude outward from end portions (33). Differently polarized lead terminals (34A, 34A) of adjacent electricity storage elements (32, 32) are bent in opposite directions and connected by superimposing and welding the end portions thereof.