NOVELTY - Non-aqueous electrolyte battery comprises: (a) a positive electrode comprising an active material; (b) a negative electrode including a current collector and a negative electrode layer supported by the current collector; and (c) a non-aqueous electrolyte.    USE - The non-aqueous electrolyte battery is used in a battery pack used in a vehicle (all claimed).    ADVANTAGE - The non-aqueous electrolyte battery has excellent charge-discharge life cycle.    DETAILED DESCRIPTION - Non-aqueous electrolyte battery comprises: (a) a positive electrode comprising an active material selected from manganese dioxide, iron oxide, copper oxide, nickel oxide, lithium-manganese composite oxide, lithium-nickel composite oxide, lithium-cobalt composite oxide, lithium-nickel-cobalt composite oxide, lithium-manganese-cobalt composite oxide, spinel type lithium-manganese-nickel composite oxide, lithium phosphorus oxide having an olivine structure, iron sulfate, vanadium oxide, or lithium-nickel-cobalt-manganese composite oxide; (b) a negative electrode including a current collector and a negative electrode layer supported by the current collector, and the negative electrode layer containing a negative electrode active material having a lithium (Li) ion insertion potential not lower than 0.4V (vs. Li/Li+); and (c) a non-aqueous electrolyte. The negative electrode has a porous structure, a pore diameter distribution of the negative electrode as determined by a mercury porosimetry, which includes a first peak having a mode diameter of 0.01-0.2 mu m, and a second peak having a mode diameter of 0.003-0.02 mu m, a volume of pores having a diameter of 0.01-0.2 mu m as determined by the mercury porosimetry is 0.05-0.5 ml/gram of the negative electrode excluding the weight of the current collector, and a volume of pores having a diameter of 0.003-0.02 mu m as determined by the mercury porosimetry is 0.0001-0.02 ml/gram of the negative electrode excluding the weight of the current collector.    DESCRIPTION OF DRAWING(S) - The drawing shows an oblique view of the battery pack.    Battery module (22)    Adhesive tape (23)    Printed wiring board (24)    Wiring (28,30)    Connector (29)    Protective sheets (33)    Container (35)