Patent ID: 8318345

Claim:
A cylindrical battery, comprising: a cylindrical electrode assembly comprising a positive electrode plate, a negative electrode plate, and a separator that is interposed between the positive electrode plate and negative electrode plate to insulate them from each other while being wound together with them; a cylindrical case; and a cap assembly, wherein the positive electrode plate comprises a positive electrode collector, positive electrode active materials that are applied to a part of the positive electrode collector, a positive electrode uncoated portion of the positive electrode collector that has no positive electrode active material applied to it, and a positive electrode tab that is coupled with the positive electrode uncoated portion, wherein the negative electrode plate comprises comprising a negative electrode collector, negative electrode active materials that are applied to a part of the negative electrode collector, a negative electrode uncoated portion of the negative electrode collector that has no negative electrode active material applied to it, and a negative electrode tab that is coupled with the negative electrode uncoated portion, wherein a first identification mark is disposed on at least one of the positive electrode tab and the negative electrode tab.