NOVELTY - The battery is provided with positive and negative electrodes (2,3), and a nonaqueous electrolyte. A log differential intrusion curve obtained when a pore size diameter of the negative electrode is measured by mercury porosimetry has a peak in a pore size diameter range of 0.03 to 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 to 100 m2/g. A ratio of a volume of pores having a pore size diameter of 0.05 mu m or less to a total pore volume is 20% or more.    USE - Nonaqueous electrolyte battery of battery pack mounted in vehicle (all claimed) such as two-wheel or four-wheel hybrid electric cars, two-wheel or four-wheel electric cars, electric mopeds and motor-assisted bicycles. Can also be used in power sources of digital cameras and rechargeable vacuum cleaners.    ADVANTAGE - The negative electrode is able to be reduced in both the amount of flock and the amount of broken blocks of primary particles of the lithium compound, thus the uniformity of the distribution of a negative electrode active material is improved. Since the nonaqueous electrolyte impregnation ability of the negative electrode and the uniformity of the distribution of the negative electrode active material are improved, the direct current (DC) resistance of the negative electrode is reduced, and the output performance of the nonaqueous electrolyte battery is improved. The rapid charging performance and the charge-discharge cycle performance of the battery are also improved. The material composition permits long term reliability under a high temperature environment and heat dissipating ability to be remarkably improved. The fluctuation in the load of the internal combustion engine is suppressed so as to improve the efficiency, and the regenerative power is also obtained.    DESCRIPTION OF DRAWING(S) - The drawing shows a partially broken perspective view showing a nonaqueous electrolyte battery.    Positive electrode (2)    Negative electrode (3)    Separator (4)    Positive electrode terminal (5)    Case (7)