A rechargeable battery according to an exemplary embodiment includes an electrode assembly having a positive electrode and a negative electrode, a case in which the electrode assembly is installed, a cap plate coupled with the case, a short-circuit member provided in a short-circuit hole formed in the cap plate and deformed to electrically connect the positive electrode and the negative electrode, and a valve member provided under the short-circuit hole and controlling connection between an internal space of the case and the short-circuit hole.