CELL MODULE

A cell module includes a plurality of cylindrical batteries (1) and a holder composed by arranging each of cylindrical batteries (1) in a parallel posture. The holder includes: a holder body having holding spaces (13) for arranging cylindrical batteries (1) at fixed positions; and a sub holder stacked on the holder body. The holder body has stopper portions (5) deformed toward surfaces of cylindrical batteries (1) arranged in holding spaces (13). The sub holder has push rods that push out stopper portions (5) to cylindrical batteries (1) in a state of being coupled to the holder body. In a state in which the sub holder is coupled to the holder body, in the cell module, the push rods thrust stopper portions (5) against cylindrical batteries (1), and press the surfaces of cylindrical batteries (1) arranged in holding spaces (13).