Battery

A battery comprising:

• a metal battery can that has a tubular portion having an opening edge portion at a first end of the tubular portion and a bottom portion closing a second end of the tubular portion;
• an electrode body that is in the battery can;
• an electrolytic solution that fills the battery can;
• and
• a sealing member that has an outer peripheral surface facing an inner peripheral surface of the opening edge portion of the tubular portion and is configured to seal the opening edge portion,
• wherein:
• a part of the inner peripheral surface of the opening edge portion and a part of the outer peripheral surface of the sealing member are joined by a melting portion;
• a preventing portion is on the outer peripheral surface of the sealing member, the preventing portion being configured to prevent the electrolytic solution from rising toward a position, in which the melting portion is formed, between the inner peripheral surface of the opening edge portion and the outer peripheral surface of the sealing member;
• a distance between the preventing portion and the bottom portion is shorter than a distance between the melting portion and the bottom portion;
• the preventing portion includes a groove portion defined in the outer peripheral surface of the sealing member;
• the preventing portion and the inner peripheral surface of the opening edge portion demarcate a first space;
• and
• the groove portion is configured to store therein a portion of the electrolytic solution passing through a second space between the inner peripheral surface of the opening edge portion and the outer peripheral surface of the sealing member.