BATTERY PACK

A battery pack includes: a battery; an electrical device connected to the battery; a case including a case body accommodating the battery and the electrical device, and a case cover; and a reinforcing member provided inside the case, the case body has a bottom wall on which the battery and the electrical device are placed, and a side wall extending in a first direction parallel to the bottom wall, the electrical device is disposed adjacent to the side wall in a second direction parallel to the bottom wall and perpendicular to the first direction, the reinforcing member includes a partition plate disposed adjacent to the electrical device in the first direction and adjacent to the side wall in the second direction, and the partition plate, as viewed in the first direction, is formed in a triangular shape, and includes a bulging portion as defined herein.