Nonaqueous electrolyte battery and battery pack

A nonaqueous electrolyte battery comprising:

• a container;
• a positive electrode housed in the container, the positive electrode comprising a positive electrode active material represented by a general formula LiMO2 where M is one or more elements selected from a group consisting of Ni, Co, and Mn;
• a negative electrode housed in the container, the negative electrode being spatially separated from the positive electrode and including a titanium-containing oxide as a negative electrode active material;
• and
• a nonaqueous electrolyte housed in the container, wherein
• a potential of the positive electrode is 3.75 V or more vs. Li/Li+, when an open circuit voltage of the nonaqueous electrolyte battery is 2.17 V, and wherein
• the titanium-containing oxide comprises a spinel type lithium-titanium composite oxide and an orthorhombic crystal β-type titanium composite oxide, and a ratio w1/w2 is ⅔ or more, where w1 is a weight of the orthorhombic crystal β-type titanium composite oxide relative to an area of the negative electrode and w2 is a weight of the spinel type lithium-titanium composite oxide relative to an area of the negative electrode.