NOVELTY - The high voltage battery comprises an anode (204) comprising an anode active material characterized by a first specific capacity, a cathode (200) comprising a cathode active material characterized by a second specific capacity, and an electrolyte (202). The first and second specific capacities are matched such that the battery is characterized by a rated charge voltage of greater than 4.9 V. The electrolyte comprises a lithium salt, a non-aqueous solvent, and an additive compound present at a concentration of less than 0.5% of the total weight of the electrolyte.    USE - The high voltage battery is useful for supplying power to consumer electronics, portable electronics, hybrid vehicles, electrical vehicles, power tools, power grid, military applications, and aerospace applications.    ADVANTAGE - The battery exhibits high voltage stability, thermal stability, electrochemical stability, chemical stability and coulombic efficiency.    DETAILED DESCRIPTION - The high voltage battery comprises an anode (204) comprising an anode active material characterized by a first specific capacity, a cathode (200) comprising a cathode active material characterized by a second specific capacity, and an electrolyte (202). The first and second specific capacities are matched such that the battery is characterized by a rated charge voltage of greater than 4.9 V. The electrolyte comprises a lithium salt, a non-aqueous solvent, and an additive compound present at a concentration of less than 0.5% of the total weight of the electrolyte. The battery is characterized by 60% of reduction in residual current as compared to a control battery, which is characterized by a rated charge voltage of greater than 4.2 V, having a control electrolyte in which the additive compound is not present. The battery and the control battery are compared at a temperature of 50 degrees C. An INDEPENDENT CLAIM is included for a method of making a high voltage battery.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a lithium-ion battery.    Cathode (200)    Electrolyte (202)    Anode (204)    Anode solid electrolyte interface (206)    Cathode solid electrolyte interface. (208)