NOVELTY - The battery has a cathode arranged with a cathode active material that is made of manganese fertilization metal oxide. Nonaqueous liquid electrolyte is made of organic solvent, salt and transmitted additive. The additive is made of tetrafluoroborate. The nonaqueous liquid electrolyte is interposed between an anode and a separator. The fertilization metal oxide is made of aluminum, magnesium, manganese, nickel, carbon monoxide, chromium, vanadium or iron. The anode is arranged with an anode active material.    USE - Lithium secondary battery.    ADVANTAGE - The battery reduces elution volume of manganese so as to avoid output degradation of the battery. The battery is inexpensive. The battery has low fabrication cost. The battery suppresses decomposition of lithium hexafluorophosphate in an effective manner and avoids performance degradation.    DETAILED DESCRIPTION - The organic solvent is made of ethylene carbonate, polypropylene carbonate, 1,2- butylene carbonate, 2,3- butylene carbonate, 1,2- pentylene carbonate, 2,3- pentylene carbonate, vinylenecarbonate, vinylethylene carbonate, fluoroethylene carbonate, dimethyl carbonate, diethyl carbonate, dipropyl carbonate, ethyl methyl carbonate, methylpropyl carbonate, ethylpropyl carbonate, DME, diethylether, dipropyl ether, methylethyl ether, methyl propyl ether, ethylpropylether, methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, gamma-butyrolactone, gamma-valerolactone, gamma-carprolactone, s-valerolactone or e-carprolactone. The nonaqueous liquid electrolyte is made of vinylenecarbonate, vinylethylene carbonate, ring-shaped sulfite, saturation sultone, unsaturated sultone or non-ring-like sulfone. The anode active material is made of lithium metal, carbonaceous material or metal compound. The metal compound is made of silicon, germanium, tin, lead, phosphorus, antimony, bismuth, aluminum, gallium, indium, titanium, manganese, iron, carbon monoxide, nickel, copper, zinc, silver, magnesium, strontium or barium.    DESCRIPTION OF DRAWING(S) - The drawing shows a graphical view illustrating relationship between capacity ratio and lifetime property cycle of a lithium secondary battery.'(Drawing includes non-English language text)'