BATTERY

Provided is technique to suppress inside short circuit of a battery. A herein disclosed battery (1) includes an electrode body (20), a battery case (10), and a first electrical collector member (50). The electrode body (20) includes a first electrode (22), a second electrode (24), and a first electrode tab group (23) connected to the first electrode (22). The battery case (10) includes an outer package (12) and a sealing plate (14). The outer package (12) is configured to accommodate the electrode body (20) and includes an opening (12h). The sealing plate (14) is configured to seal the opening (12h). The first electrical collector member (50) is connected to the first electrode tab group (23). The first electrical collector member (50) includes a first area (51a) that is arranged along a surface at the electrode body (20) side of the sealing plate (14). A first insulating member (70) is arranged between the sealing plate (14) and the first area (51a). A second insulating member (80, 280) is arranged between the first area (51a) and the electrode body (20).