To reduce manufacturing cost of a battery mainly using a positive electrode active material which has an oxidation-reduction potential of 3.7 V(vs.Li/Li⁺) or less entirely, the oxidation-reduction potential accompanying an electrochemical insertion/desorption reaction of lithium ions.

A nonaqueous electrolyte secondary battery includes a positive electrode mainly including a positive electrode active material (A) which has an oxidation-reduction potential of 3.7 V(vs.Li/Li⁺) or less entirely, the oxidation-reduction potential accompanying an electrochemical insertion/desorption reaction of lithium ions. A method for manufacturing the nonaqueous electrolyte secondary battery includes:means of forming a positive electrode potential nobler than 3.7 V(vs.Li/Li⁺); and means of detecting whether or not an internal fine short circuit is generated.