Battery

The invention relates to a battery. A battery (100) disclosed herein is provided with: an exterior body having a bottom wall and an opening facing the bottom wall; a sealing plate for sealing the opening of the exterior body; and one or a plurality of wound electrode bodies (20a) formed by laminating a belt-shaped positive electrode having a positive electrode active material layer and a belt-shaped negative electrode having a negative electrode active material layer with a belt-shaped separator interposed therebetween, and winding around a winding axis. The wound electrode body (20a) is housed in the exterior body such that the winding axis extends along the bottom wall of the exterior body. The length (L1) of the positive electrode active material layer in the winding axis direction of the wound electrode body (20a) is 15 cm or more. A plurality of winding fixing bands (28) are attached to the outer surface of the winding electrode body (20a) at intervals in the winding axis direction. 本发明涉及电池。在此公开的电池(100)具