TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Battery: The non-aqueous electrolyte secondary battery contains anode (21), cathode (22), non-aqueous electrolyte composition and separator (24) accommodated in the packing component. The anode and cathode are respectively formed using anode active material and cathode active material, which discharges and occludes lithium ion. The packing component contains a laminated film.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The non-aqueous electrolyte composition further contains carbonate ester having hydrocarbon group with a double bond and high molecular compound.    TECHNOLOGY FOCUS - POLYMERS - Preferred Compound: The high molecular compound is chosen from polyvinyl formal, polyacrylic acid and/or polyvinylidene fluoride. EXAMPLE - Lithium-cobalt complex oxide (LiCoO2) (in wt.pts) (94) as anode active material, graphite (3) as electroconductive material, polyvinylidene fluoride (3) as binder, and N-methyl pyrrolidone were mixed, and anode-mix coating liquid was obtained. The obtained coating liquid was uniformly coated on both surfaces of aluminum foil, dried to form anode-mix layer, and cut to a width of 50 mm and length of 300 mm to obtain anode. Then, anode terminal was attached. Graphite (97) as cathode active material, polyvinylidene fluoride (3) as binder and N-methyl pyrrolidone were mixed and cathode-mix coating liquid was obtained. The obtained cathode-mix coating liquid was uniformly coated on both surfaces of the cooper foil, dried to form cathode-mix layer and cut to a width of 50 mm and length of 300 mm, to form cathode. Then, the cathode terminal was attached. The non-aqueous electrolyte composition was formed by mixing ethylene carbonate, propylene carbonate, diethyl carbonate, lithium hexafluorophosphate and ditetra decyl carbonate in weight ratio of 17:8:60:14:1. 1% vinylene carbonate was added to non-aqueous electrolyte composition. The battery was assembled using the obtained anode, cathode and non-aqueous electrolyte composition. The obtained battery had capacitance of 700 mAh. The battery had charge-and-discharge maintenance factor of 94.2% after 100 cycles.