Nonaqueous electrolyte battery and battery pack comprising a spinel type lithium-manganese composite oxide

A nonaqueous electrolyte battery comprising:

• a positive electrode, the positive electrode comprising a spinel type lithium-manganese composite oxide and a lithium cobalt oxide as a positive electrode active material, the spinel type lithium-manganese composite oxide and the lithium cobalt oxide satisfying formula (1) below;
• a negative electrode, the negative electrode comprising a titanium-containing oxide;
• and
• a nonaqueous electrolyte,
• the nonaqueous electrolyte battery satisfying formula (2) below:
• 0.01≤B/(A+B)<0.05 (1)
• 0.3≤C/D≤0.8 (2)
• where A is a weight ratio (wt %) of the spinel type lithium-manganese composite oxide in the positive electrode active material, B is a weight ratio (wt %) of the lithium cobalt oxide in the positive electrode active material, C is a pore specific surface area (m2/g) of the positive electrode according to mercury porosimetry, and D is a pore specific surface area (m2/g) of the negative electrode according to mercury porosimetry and a value of the D is within a range of from 5 m2/g to 5.45 m2/g.