Patent ID: 8852801

Claim:
A battery comprising: a cathode comprising (1) a strip-shaped cathode current collector, having a first region and two second regions, the first region in-between the second regions, and (2) a cathode active material layer on the first region of the strip-shaped cathode current collector, an anode comprising (1) a strip-shaped anode current collector, having a first region, two second regions, and two third regions, the first region in-between the second regions, and the second regions in-between the third regions, and (2) an anode active material layer on the first region and second regions of the strip-shaped anode current collector, and a separator in between the cathode and the anode, wherein, the first region of the strip-shaped cathode current collector covers substantially the same area as the first region of the strip-shaped anode current collector, and the relationship between a width of the first region of the strip-shape anode current collector, A, and a width of each third region, B, is 0.005≦(A−B)/A≦0.15.