Patent ID: 8420262

Claim:
A nonaqueous electrolyte battery comprising: a negative electrode including a negative electrode layer containing a negative electrode active material having a lithium ion absorption potential of 0.4 V (vs. Li/Li+) or more, and a negative electrode current collector made of aluminum or an aluminum alloy to retain the negative electrode layer; a positive electrode including a positive electrode layer containing a positive electrode active material, and a positive electrode current collector made of aluminum or an aluminum alloy to retain the positive electrode layer, the positive electrode current collector having a total area and specific capacitance larger than those of the negative electrode current collector; and a nonaqueous electrolyte, wherein the negative electrode current collector and the positive electrode current collector satisfy the following equation (I): 1 <Ap/An≦ 1.2 (I) where An denotes the total area of the negative electrode current collector and Ap denotes the total area of the positive electrode current collector.