A secondary battery includes an electrode body that includes a positive-electrode sheet and a negative-electrode sheet, an exterior body that accommodates the electrode body, a sealing plate that seals an opening of the exterior body, a positive-electrode terminal that is secured to the sealing plate, a positive-electrode tab that is connected to the positive-electrode sheet, a first positive-electrode current collector that is connected to the positive-electrode terminal and electrically connected to the positive-electrode tab, an inner insulating member that is disposed between the sealing plate and the first positive-electrode current collector, and a cover that is composed of a resin and disposed between the first positive-electrode current collector and the electrode body. The cover includes a cover portion that faces the first positive-electrode current collector and a cover joint that extends from the cover portion toward the sealing plate. The cover joint is connected to the inner insulating member.