NOVELTY - A nonaqueous electrolyte secondary battery consists of electrode element of positive electrode and negative electrode which are arranged to face each other, nonaqueous electrolyte solution, and exterior component (6) which internally contains electrode element and nonaqueous electrolyte solution. The nonaqueous electrolyte solution contains a cyclic sulfonic acid ester (I). The positive electrode active material in positive electrode is mixture of lithium manganese composite oxide having spinel structure and lithium transition metal composite compound having layered rock salt structure.    USE - Nonaqueous electrolyte secondary battery. Uses include but are not limited to electric vehicle, hybrid vehicle, electric motorcycle, electric-assisted bicycles, power tools, notebook computer, mobile telephone and solar power systems.    ADVANTAGE - The nonaqueous electrolyte secondary battery has excellent storage characteristics. Decrease in capacity of battery due to self-discharge is efficiently suppressed.    DETAILED DESCRIPTION - A nonaqueous electrolyte secondary battery consists of electrode element, positive electrode and negative electrode which are arranged to face each other, nonaqueous electrolyte solution, and exterior component which internally containing the electrode element and the nonaqueous electrolyte solution. The nonaqueous electrolyte solution contains a cyclic sulfonic acid ester of formula (I). The positive electrode active material in positive electrode is mixture of lithium manganese composite oxide having spinel structure and lithium transition metal composite compound having layered rock salt structure.    R1,R2=H, 1-5C alkyl, halo or amino, and are not H simultaneously;and    R3=1-5C alkylene, carbonyl, sulfonyl, 1-6C fluoroalkylene or 2-6C divalent bonded with alkylene unit or fluoroalkylene unit through ether group.    An INDEPENDENT CLAIM is included for manufacture of nonaqueous electrolyte secondary battery, which involves opposingly-arranging positive electrode containing positive electrode active material and negative electrode, producing electrode element, enclosing the electrode element and nonaqueous electrolyte in exterior component, and including lithium manganese complex oxide.    DESCRIPTION OF DRAWING(S) - The drawing shows schematic sectional view of the lamination exterior-type structure of nonaqueous electrolyte secondary battery.    Positive electrode active material layer (1)    Negative electrode active material layer (2)    Positive electrode electrical power collector (3)    Anode collector (4)    Lamination exterior component (6)