Patent ID: 8501346

Claim:
A rechargeable battery comprising: an electrode assembly comprising: an electrode assembly positive and negative electrodes at both sides of a separator, wherein the positive and negative electrodes are wound together with the separator; a case housing the electrode assembly therein; a cap plate sealing an opening at one side of the case; an electrode terminal in a terminal hole of the cap plate; and a lead tab coupling the electrode terminal and the electrode assembly in the case comprising a connection portion defining a first fastening hole and a second fastening hole, wherein the electrode terminal comprises: an inner terminal plate formed at an inner side of the cap plate, and a main coupling protrusion and a first auxiliary coupling protrusion protruding from the inner terminal plate, and wherein the main coupling protrusion is coupled to the connection portion of the lead tab via the first fastening hole, and the first auxiliary coupling protrusion is coupled to the connection portion of the lead tab via the second fastening hole, and wherein the main coupling protrusion, the first auxiliary coupling protrusion, and the inner terminal plate are electrically connected, wherein the inner terminal plate is integrally formed with the main coupling protrusion and the first auxiliary coupling protrusion.