NOVELTY - A nonaqueous electrolyte secondary battery (1) comprises a positive electrode (2), a negative electrode (3) containing an active material containing titanium oxide having a lithium-ion absorption potential of 1.2 V or more (with respect to ratio of lithium and lithium monovalent ion), and nonaqueous electrolyte (5) containing lithium salt and nonaqueous solvent. The lithium salt includes lithium hexafluorophosphate and lithium tetrafluoroborate. The nonaqueous solvent contains ethylene carbonate (a), cyclic carboxylate or 4C or more cyclic carbonate (b), and/or linear carbonate (c).    USE - Nonaqueous electrolyte secondary battery. Uses include but are not limited to notebook personal computer, mobile personal computer, mobile telephone, portable printer, liquid crystal television, electronic organizer, calculator, motor vehicle, game machine device, etc.    ADVANTAGE - The nonaqueous electrolyte secondary battery has excellent low-temperature cycle characteristics, and suppressed reduction in battery capacity and gas-evolution at high temperature.    DETAILED DESCRIPTION - A nonaqueous electrolyte secondary battery comprises a positive electrode, a negative electrode containing an active material containing titanium oxide having a lithium-ion absorption potential of 1.2 V or more (with respect to ratio of lithium and lithium monovalent ion), and a nonaqueous electrolyte containing lithium salt and nonaqueous solvent for dissolving lithium salt. The lithium salt includes lithium hexafluorophosphate and lithium tetrafluoroborate. The nonaqueous solvent contains ethylene carbonate (a), cyclic carboxylate or 4C or more cyclic carbonate (b), and/or linear carbonate (c). The amount of ethylene carbonate is 5-20 vol.% based on total volume of the nonaqueous solvent. The concentration of lithium tetrafluoroborate with respect to nonaqueous liquid electrolyte is 0.05-0.5 mol/L. An INDEPENDENT CLAIM is included for manufacture of nonaqueous electrolyte secondary battery.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of nonaqueous electrolyte secondary battery.    Nonaqueous electrolyte secondary battery (1)    Positive electrode (2)    Negative electrode (3)    Nonaqueous electrolyte (5)    Exterior component (6)