BATTERY MODULE

A battery module including a plurality of batteries, and a busbar electrically connecting the batteries. The battery includes: a battery can including a cylindrical portion, a bottom wall closing one end of the cylindrical portion, and an open rim continuing to the other end of the cylindrical portion; an electrode body; and a sealing body which seals an opening defined by the open rim. The sealing body has a first principal surface facing an interior of the battery can, a second principal surface opposite to the first principal surface, and a side surface connecting the first principal surface with the second principal surface. The busbar has a plurality of through-holes fitted with the batteries. The open rim of each of the batteries fitted into the through-holes is at least partially in contact with the busbar. The sealing body and the busbar are electrically insulated from each other.