BATTERY AND METHOD OF MANUFACTURING SAME

A battery includes: an electrode assembly and an electrolyte solution; an exterior container that is provided with an injection hole; and a sealing member that is fixed to the exterior container by swaging. The sealing member includes: a first member having a stem portion; and a second member having an engagement portion engaged with the stem portion. The stem portion has an abutment surface with which the engagement portion is in abutment, and a swaging-fixation portion formed to be located between an inner surface of the exterior container and the engagement portion so as to fix the sealing member to the exterior container. A relation of 0.55≤B/A is satisfied between a thickness (A) of a portion of the exterior container in which the injection hole is formed and a distance (B) between the abutment surface of the stem portion and the inner surface of the exterior container.