BATTERY AND METHOD FOR MANUFACTURING BATTERY

A disclosed battery includes an electrode group formed by winding a first electrode and a second electrode with a separator interposed therebetween, and a first current collector plate having at least one welded portion welded to the first electrode. The first current collector plate has at least a pair of magnetized portions that are arranged to sandwich the welded portion and are magnetized. A magnetic force of the welded portion is smaller than a magnetic force of the magnetized portions.