Wound electrode assembly, the electrode group and a nonaqueous electrolyte battery

According to one embodiment, the electrode assembly is provided. The electrode group includes a laminate. Laminate comprises a positive electrode, a negative electrode of one or more layers, and a separator. The negative electrode includes a negative electrode current collector and a negative electrode layer formed on the negative electrode current collector. The negative electrode layer comprises a lithium-titanium composite oxide. This electrode group, the relation below satisfies the (I) ~ (III): 10 ≦ a 1 / b 1 ≦ 16 (1); 0.7 ≦ D 1 / E 1 ≦ 1.4 (2); E Here, a b D E