RECHARGEABLE BATTERY

A rechargeable battery according to an exemplary embodiment of the present invention includes: an electrode assembly; a casing which accommodates the electrode assembly and has an opening; a cap assembly which is coupled through the opening and seals the casing; a spacer which is positioned between the electrode assembly and the casing and has multiple holes; and a vent member which is formed on a bottom surface of the casing which is positioned opposite to the opening.