Patent ID: 8318339

Claim:
A battery pack comprising: an outer package including: (i) a first laminate including a housing part, (ii) a second laminate overlaid on the first laminate covering an open surface of the housing part, wherein the first laminate and the second laminate are shifted from each other, and (iii) a heat-weld sheet disposed on an outer bottom surface of the housing part, wherein at least one of the first laminate or the second laminate includes a conductive layer; a battery element housed in the outer package; a top cover; and a positive electrode lead of the battery element is electrically connected to the conductive layer of the outer package with a first end of a conductive tape, wherein a second end of the conductive tape connects to an upper surface of the top cover, said top cover fitted onto a top opening of the outer package when the positive electrode lead and a negative electrode lead are folded.