A nonaqueous electrolyte battery is provided. The nonaqueous electrolyte battery includes a battery element, and a package member for packaging the battery element, and in the nonaqueous electrolyte battery, the package member at least includes a outer layer film, a layer which contains a blackbody material which has an emissivity of 0.6 or more, a metal layer and a inner layer film; the layer which contains the blackbody material is arranged between the outer layer film and the metal layer.