NOVELTY - The battery has a negative electrode comprising a current collector, a porous structure and an active material-containing layer containing lithium-titanium oxide. The porous structure includes a peak with mode diameter of 0.01 to 0.2 micrometer and another peak having mode diameter of 0.003 to 0.02 micrometer. Volume of the former peak is 0.05 to 0.5 milli litter per gram of the negative electrode excluding weight of the current collector. Volume of the latter peak is 0.0001 to 0.02 milli litter per gram of the negative electrode excluding the weight of the current collector.    USE - Flattened type non-aqueous electrolyte battery for a battery pack in a vehicle (all claimed) such as hybrid automobile, electric automobile and power-assisted bicycle.    ADVANTAGE - The voltage of the battery can be increased by utilizing a positive electrode containing spinel type lithium-manganese-nickel composite oxide as positive electrode active material together with the negative electrode, thus realizing the non-aqueous electrolyte battery with excellent thermal stability. The case of the battery pack is formed by utilizing a metal that is selected from aluminum or aluminum alloy so as to decrease thickness of the case, thus realizing the non-aqueous electrolyte battery with light weight, high output and excellent charge-discharge cycle life over a long period. The entire surface of the negative electrode active material is made to contact with the non-aqueous electrolyte when impregnation capability of the negative electrode with the non-aqueous electrolyte is improved, so that uniformity of lithium ion concentration within the negative electrode active material is maintained easily, and utilization rate of the negative electrode active material is improved. The differences in the battery capacity and impedance among individual batteries can be reduced, so as to decrease unevenness in the battery voltage derived from the difference in the battery capacity among the individual batteries in a battery module consisting of a set of batteries that are connected in series when the battery module is charged full. The battery pack is excellent in controllability of the battery module voltage and charge-discharge cycle characteristics.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a vehicle comprising a battery pack that comprises a flattened type non-aqueous electrolyte battery.    DESCRIPTION OF DRAWING(S) - The drawing shows an exploded perspective view of a battery pack with a flattened type non-aqueous electrolyte battery.    Band-like positive electrode terminal (1)    Band-like negative electrode terminal (2)    Unit cells (21)    Battery module (22)    Adhesive tape (23)