A rechargeable battery comprising: an electrode assembly; a case accommodating the electrode assembly therein; a cap plate closing an opening of the case; a first electrode terminal and a second electrode terminal extending through the cap plate and coupled to the electrode assembly; and an external short-circuiter comprising a membrane closing and sealing a short-circuit opening in the cap plate and coupled to the second electrode terminal, and a short-circuit tab coupled to the first electrode terminal and separated from the membrane, and wherein the cap plate comprises a bending inducement groove (81, 82, 83) formed at the second electrode terminal, wherein the second electrode terminal comprises: a rivet terminal at a terminal opening in the cap plate; a flange inside the cap plate and coupled to the rivet terminal; a plate terminal outside the cap plate and coupled to the rivet terminal; and a top plate between the plate terminal and the cap plate, the battery further comprising a second electrode lead tab coupled to a lower end of the rivet terminal, wherein the second electrode lead tab comprises a current collecting portion coupled to an uncoated region of the electrode assembly, and a connection portion extending perpendicularly from the current collecting portion and coupled to the second electrode terminal, characterized in that the connection portion has fuses at opposite sides of a first through-hole that correspond to the second inducement groove. an electrode assembly; a case accommodating the electrode assembly therein; a cap plate closing an opening of the case; a first electrode terminal and a second electrode terminal extending through the cap plate and coupled to the electrode assembly; and an external short-circuiter comprising a membrane closing and sealing a short-circuit opening in the cap plate and coupled to the second electrode terminal, and a short-circuit tab coupled to the first electrode terminal and separated from the membrane, and wherein the cap plate comprises a bending inducement groove (81, 82, 83) formed at the second electrode terminal, wherein the second electrode terminal comprises: a rivet terminal at a terminal opening in the cap plate; a flange inside the cap plate and coupled to the rivet terminal; a plate terminal outside the cap plate and coupled to the rivet terminal; and a top plate between the plate terminal and the cap plate, the battery further comprising a second electrode lead tab coupled to a lower end of the rivet terminal, a rivet terminal at a terminal opening in the cap plate; a flange inside the cap plate and coupled to the rivet terminal; a plate terminal outside the cap plate and coupled to the rivet terminal; and a top plate between the plate terminal and the cap plate, the battery further comprising a second electrode lead tab coupled to a lower end of the rivet terminal, wherein the second electrode lead tab comprises a current collecting portion coupled to an uncoated region of the electrode assembly, and a connection portion extending perpendicularly from the current collecting portion and coupled to the second electrode terminal, characterized in that the connection portion has fuses at opposite sides of a first through-hole that correspond to the second inducement groove.