According to one embodiment, a non-aqueous electrolyte battery is provided. The non-aqueous electrolyte battery includes a negative electrode contained a negative electrode active material. The negative electrode active material includes a monoclinic β-type titanium-based oxide or lithium titanium-based oxide. The monoclinic β-type titanium-based oxide or lithium titanium-based oxide has a peak belonging to (011), which appears at 2θ1 in a range of 24.40° or more and 24.88° or less, in an X-ray diffraction pattern obtained by wide angle X-ray diffractometry using CuKα radiation as an X-ray source.