NONAQUEOUS ELECTROLYTE BATTERY

PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte battery which includes a negative electrode having a negative electrode active material wherein lithium ions are inserted/released at a potential of 1.2 V or more against lithium potential of lithium titanate or the like, and which has superior low temperature output characteristics. SOLUTION: In such a battery system, different from the battery to use carbon as the negative electrode, cyclic carbonate is not indispensable, and an EMC single solvent is available. If PC, EC, or DEC are mixed, although the low temperature output characteristics are reduced, the low temperature output characteristics are improved on the contrary if DMC is mixed. When the volume of carbonate ester having no carbon-carbon double bond to constitute an electrolytic solution is made 100, and when a volume proportion of cyclic carbonate ester to occupy the volume of the carbonate ester is a, the volume proportion of DMC is b, the volume proportion of EMC is c, and the volume proportion of DEC is d, 0≤a≤30, 0≤b