Method for manufacturing battery, battery, and battery intermediate

A method for manufacturing a battery includes: a placing step of placing a resin layer along at least one surface in a thickness direction of a current collector terminal; an enclosing step of enclosing the power generation element in an outer body; and a sealing step of sealing the power generation element inside the outer body. The current collector terminal includes a flat terminal portion and a tilted terminal portion. The resin layer includes a flat resin layer portion and a tilted resin layer portion. In the placing step, the resin layer is placed on the current collector terminal such that θ1>θ2 is satisfied, where θ1 is an angle between the flat terminal portion and a straight line extended from the tilted terminal portion, and θ2 is an angle between the flat resin layer portion and a straight line extended from the tilted resin layer portion.