A turnover apparatus includes a first turnover portion, a second turnover portion, and a third turnover portion each including a convexly curved outer surface. An electrode foil is turned over as the electrode foil is transported along the outer surface of each of the first turnover portion, the second turnover portion, and the third turnover portion in this order. The first turnover portion, the second turnover portion, and the third turnover portion are integrally fixed. Each of the outer surfaces of the first turnover portion, the second turnover portion, and the third turnover portion defines a part of each side of a virtual triangle.