A battery capable of improving cycle characteristics is provided. A spirally wound electrode body in which a cathode and an anode are layered with a separator in between and wound is included inside a battery can. An electrolytic solution is impregnated in the separator. For the solvent, a mixed solvent of a cyclic ester derivative having halogen atom and a chain compound having halogen atom is used. Thereby, decomposition reaction of the solvent in the anode is inhibited, and cycle characteristics are improved.