A rechargeable battery and method of manufacturing the same, the rechargeable battery including an electrode assembly including a spirally wound separator, positive electrode, and negative electrode, a case housing the electrode assembly, a cap plate including a terminal hole and sealing an opening in one side of the case, an electrode terminal in the terminal hole of the cap plate and extending inwardly inside the case and outwardly from the case, and a lead tab having one side connected to the electrode terminal inside the case and another side connected to the electrode assembly, the lead tab including silver (Ag).