To provide a secondary battery that can prevent a separator from breaking due to the action of external force.SOLUTION: A secondary battery includes an electrode laminate 13 in which a plurality of positive electrode plates 16 having a positive electrode current collector and negative electrode plates 17 having a negative electrode current collector 21 are alternately laminated with a separator 18 interposed therebetween. At least one of the plurality of positive electrode plates 16 and the plurality of negative electrode plates 17 is laminated such that some positions are displaced in a direction intersecting the laminating direction.SELECTED DRAWING: Figure 5