A battery comprising a positive electrode plate, a negative electrode plate, an electrolyte and a separator, wherein the negative electrode plate comprises a negative current collector and a negative film, the negative film is provided on at least one surface of the negative current collector and comprises a negative active material; characterized in that the negative active material is graphite, and the negative electrode plate satisfies a relationship:0.45≤P×1.1/G+2/V OI ≤0.75, wherein P represents a porosity of the negative film with a unit of %, as determined by gas replacement and obtained according to an equation P=(V 1 -V 2 )/V 1 ×100%, where V 1 represents an apparent volume of the negative film and V 2 represents a real volume of the negative film.and is 25%-45%, G represents a graphitization degree of the negative active material with a unit of %, when determined by X-ray powder diffraction according to JIS K 0131-1996 with determination of the artificial graphite lattice parameter according to JB/T4220-2011, with the G value obtained according to an equation G=(0.344-d 002 )/(0.344-0.3354), and is 70%-99.9%, Voi represents an OI value of the negative film, when determined by X-ray powder diffraction according to JIS K 0131-1996 with determination of the artificial graphite lattice parameter according to JB/T4220-2011, with the V OI then obtained according to an equation V OI =C 004 /C 110 , wherein C 004 represents characteristic diffraction peak area of crystal plane and C 110 represents characteristic diffraction peak area of crystal plane, and is 10-70, the battery satisfies a relationship: 5≤D50/CB≤13, wherein D50 represents the average particle diameter of the negative active material with a unit of μm, and is 3 μm∼20 μm as measured by laser diffraction, CB represents a capacity excess ratio of the battery and is a ratio of a capacity of the negative electrode plate to a capacity of the positive electrode plate under the same area, and is 1.1~1.4. the negative active material is graphite, and the negative electrode plate satisfies a relationship:0.45≤P×1.1/G+2/V OI ≤0.75, wherein P represents a porosity of the negative film with a unit of %, as determined by gas replacement and obtained according to an equation P=(V 1 -V 2 )/V 1 ×100%, where V 1 represents an apparent volume of the negative film and V 2 represents a real volume of the negative film.and is 25%-45%, G represents a graphitization degree of the negative active material with a unit of %, when determined by X-ray powder diffraction according to JIS K 0131-1996 with determination of the artificial graphite lattice parameter according to JB/T4220-2011, with the G value obtained according to an equation G=(0.344-d 002 )/(0.344-0.3354), and is 70%-99.9%, Voi represents an OI value of the negative film, when determined by X-ray powder diffraction according to JIS K 0131-1996 with determination of the artificial graphite lattice parameter according to JB/T4220-2011, with the V OI then obtained according to an equation V OI =C 004 /C 110 , wherein C 004 represents characteristic diffraction peak area of crystal plane and C 110 represents characteristic diffraction peak area of crystal plane, and is 10-70, the battery satisfies a relationship: 5≤D50/CB≤13, wherein D50 represents the average particle diameter of the negative active material with a unit of μm, and is 3 μm∼20 μm as measured by laser diffraction, CB represents a capacity excess ratio of the battery and is a ratio of a capacity of the negative electrode plate to a capacity of the positive electrode plate under the same area, and is 1.1~1.4. <EOS>