A battery of the present disclosure includes: a power generation element that includes a positive electrode layer, a negative electrode layer, and an electrolyte layer which are laminated; and a support that supports the power generation element. The power generation element includes: a first plane that is a plane parallel to a laminating direction of the positive electrode layer, the negative electrode layer, and the electrolyte layer; and a second plane that is a plane perpendicular to the laminating direction, and the support includes: a first support body that is in contact with the first plane; and a second support body that includes a bent part which applies an elastic force to the power generation element in a direction perpendicular to the second plane.