Battery pack

Abstract

A battery pack (10) includes a pair of restraining plates (12) that interpose and restrain a plurality of stacked battery cells (20) from left and right sides in a direction (width direction (W)) perpendicular to a stacking direction, at least one of the restraining plates (12) having an extension portion (12A) extending along the stacking direction, and a case (14) provided with an accommodating portion that accommodates the battery cells (20), a fitting portion (14B) to be fitted to the extension portion (12A) being formed in the case (14). Figure 5