A nonaqueous electrolyte battery comprising: a positive electrode comprising a positive electrode current collector and a positive electrode active material layer on both surfaces or one surface of the positive electrode current collector, the positive electrode active material layer comprising lithium nickel cobalt manganese composite oxide; a negative electrode comprising a negative electrode current collector and a negative electrode active material layer on both surfaces or one surface of the negative electrode current collector, the negative electrode active material layer comprising a spinel type lithium titanate; and a nonaqueous electrolyte having an ion conductivity of not less than 7 mS/cm and not more than 10 mS/cm at 25°C, wherein a capacity ratio p/n is within a range of not less than 1.4 and not more than 1.8, where p is a capacity per unit area of the positive electrode, and n is a capacity per unit area of the negative electrode, the capacity of the positive electrode being measured as a discharge capacity from a charge potential of 4.3 V vs. Li/Li + to a discharge potential of 3.0 V vs. Li/Li +, and the capacity of the negative electrode being measured as a discharge capacity from a charge potential of 1.0 V vs. Li/Li + to a discharge potential of 2.5 V vs. Li/Li +, a thickness ratio T p /T n is within a range of not less than 1.05 and less than 1.3, where T p is a thickness of the positive electrode active material layer on one surface of the positive electrode current collector or a total of thicknesses of the positive electrode active material layers on both surfaces of the positive electrode current collector, excluding a thickness of the positive electrode current collector, and T n is a thickness of the negative electrode active material layer on one surface of the negative electrode current collector or a total of thicknesses of the negative electrode active material layers on both surfaces of the negative electrode current collector, excluding a thickness of the negative electrode current collector, a ratio P p /P n is within a range of not less than 0.55 and less than 0.8, where P p is a porosity of the positive electrode active material layer per 1 μm of the thickness of the positive electrode active material layer measured using a pore distribution measurement device and a nitrogen gas as adsorption gas, and P n is a porosity of the negative electrode active material layer per 1 μm of the thickness of the negative electrode active material layer measured using a pore distribution measurement device and a nitrogen gas as adsorption gas. a positive electrode comprising a positive electrode current collector and a positive electrode active material layer on both surfaces or one surface of the positive electrode current collector, the positive electrode active material layer comprising lithium nickel cobalt manganese composite oxide; a negative electrode comprising a negative electrode current collector and a negative electrode active material layer on both surfaces or one surface of the negative electrode current collector, the negative electrode active material layer comprising a spinel type lithium titanate; and a nonaqueous electrolyte having an ion conductivity of not less than 7 mS/cm and not more than 10 mS/cm at 25°C, wherein a capacity ratio p/n is within a range of not less than 1.4 and not more than 1.8, where p is a capacity per unit area of the positive electrode, and n is a capacity per unit area of the negative electrode, the capacity of the positive electrode being measured as a discharge capacity from a charge potential of 4.3 V vs. Li/Li + to a discharge potential of 3.0 V vs. Li/Li +, and the capacity of the negative electrode being measured as a discharge capacity from a charge potential of 1.0 V vs. Li/Li + to a discharge potential of 2.5 V vs. Li/Li +, a thickness ratio T p /T n is within a range of not less than 1.05 and less than 1.3, where T p is a thickness of the positive electrode active material layer on one surface of the positive electrode current collector or a total of thicknesses of the positive electrode active material layers on both surfaces of the positive electrode current collector, excluding a thickness of the positive electrode current collector, and T n is a thickness of the negative electrode active material layer on one surface of the negative electrode current collector or a total of thicknesses of the negative electrode active material layers on both surfaces of the negative electrode current collector, excluding a thickness of the negative electrode current collector, a ratio P p /P n is within a range of not less than 0.55 and less than 0.8, where P p is a porosity of the positive electrode active material layer per 1 μm of the thickness of the positive electrode active material layer measured using a pore distribution measurement device and a nitrogen gas as adsorption gas, and P n is a porosity of the negative electrode active material layer per 1 μm of the thickness of the negative electrode active material layer measured using a pore distribution measurement device and a nitrogen gas as adsorption gas.