Rechargeable battery

A rechargeable battery (100) including an electrode assembly (10) that is adapted to perform a charge and discharge operation; a case (15) that houses the electrode assembly (10); a cap plate (20) coupled to and closing an opening of the case (15); an electrode terminal (21, 22); and a lead tab (51) that connects the electrode assembly (10) to the electrode terminal (21, 22), wherein the lead tab (51) includes a current collecting connection portion (511) that is connected to the electrode assembly (10); a terminal connection portion (512) that is bent from the current collecting connection portion (511) to be connected to the electrode terminal (10); and a synthetic material (514) that embeds the terminal connection portion (512) in which a fuse (513) is formed, and wherein the synthetic material (514) includes an exposing hole (515) therein, the exposing hole (515) exposing at least one side of the fuse (513).