Abstract: An organic electrolyte improves the organic electrolyte storage battery of an electric vehicle in the initial storage capacity that affects the possible cruising range. The electrolyte includes a compound represented by formula (1) below and a compound represented by formula (2) below: wherein R1 to R5 are each independently hydrogen, an alkyl group, a halogenated alkyl group, or halogen, R6 is an alkylene group or a halogenated alkylene group and R7 is a group having a symmetrical structure about R6 as the rotational axis; R1-R2-R3??(2) wherein R2 is a vinyl group, a cyclic carbonic acid ester group, cyclic sulfite group, chain carbonic acid ester group or chain sulfite group, or —SO3—, R1 and R3 are each independently hydrogen, a halogen, an alkyl group, a halogenated alkyl group, or a vinyl, phenyl or cyclohexyl group, and when R2 is —SO3—, R1 and R3 may bond to each other to form a ring.