NOVELTY - The non-aqueous electrolyte battery comprises: a positive electrode (2); a negative electrode (3) containing a lithium compound and a negative electrode current collector for supporting the lithium compounds; and a nonaqueous electrolyte. A log differential intrusion curve of the negative electrode measured using mercury porosimetry has a peak in a pore size diameter of 0.03-0.2 mu m and attenuates with a decrease in pore size diameter from an apex of the peak. A specific surface area of pores of the negative electrode is 6-100 m2/g.    USE - The non-aqueous electrolyte battery is useful in a battery pack of a vehicle (all claimed) such as car including series hybrid car, parallel hybrid car and series-parallel hybrid car, hybrid motorcycle and electric motorcycle and of a rechargeable vacuum cleaner.    ADVANTAGE - The negative electrode has reduced direct current resistance thus improving the output performance of the non-aqueous electrolyte battery.    DETAILED DESCRIPTION - The non-aqueous electrolyte battery comprises: a positive electrode (2); a negative electrode (3) containing a lithium compound and a negative electrode current collector for supporting the lithium compounds; and a nonaqueous electrolyte. A log differential intrusion curve of the negative electrode measured using mercury porosimetry has a peak in a pore size diameter range of 0.03-0.2 mu m, and attenuates with a decrease in pore size diameter from an apex of the peak. A specific surface area of pores of the negative electrode found by mercury porosimetry is 6-100 m2/g, and the ratio of a volume of pores having a pore size diameter of 0.04-0.1 mu m to a total pore volume is 20-90%. The volume of pores measured by the mercury porosimetry is 0.1-0.5 ml per 1 g of the negative electrode, excluding the negative electrode current collector. An INDEPENDENT CLAIM is included for a battery pack comprising the non-aqueous electrolyte battery.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic partial perspective view of a non-aqueous electrolyte battery.    Electrode group (1)    Positive electrode (2)    Negative electrode (3)    Separator (4)    Belt-like positive electrode. (5)