A rechargeable battery includes an electrode assembly including a first electrode plate, a second electrode plate, and a separator between the first electrode plate and the second electrode plate, a can having an opening at one side thereof through which the electrode assembly is inserted, the electrode assembly being accommodated in the inside of the can, and a cap plate that seals the opening of the can. The can includes a first vent on a first side surface of the can, and a second vent on a second side surface of the can.