NOVELTY - The method comprises: providing (701) a discharge system comprising forms of a reducer fluid, forms of an oxidant fluid, a discharge unit and an acidification reactor, where the discharge unit comprises a stack that includes electrolytic cells; and facilitating (702) discharge of the discharge unit for producing an electric power from a neutral oxidant fluid comprising forms of an aqueous multi-electron oxidant. Each of the electrolytic cells comprises an electrolyte-electrode assembly. The reducer fluid comprises forms of the reducer.    USE - The method is useful for producing electric power from an aqueous multi-electron oxidant and a reducer such as hydrogen and for simultaneously generating a discharge fluid (all claimed) for automotives such as electric vehicles.    ADVANTAGE - The method is capable of economically producing the electric power in an energy efficient manner with rapid rechargability and high throughput and without producing any chemical waste.    DETAILED DESCRIPTION - The method comprises: providing (701) a discharge system comprising forms of a reducer fluid, forms of an oxidant fluid, a discharge unit and an acidification reactor, where the discharge unit comprises a stack that includes electrolytic cells; and facilitating (702) discharge of the discharge unit for producing an electric power from a neutral oxidant fluid comprising forms of an aqueous multi-electron oxidant. Each of the electrolytic cells comprises an electrolyte-electrode assembly. The reducer fluid comprises forms of the reducer. The step of facilitation of the discharge comprises: lowering pH of the neutral oxidant fluid in the acidification reactor for generating an acidic oxidant fluid; transferring (702a) electrons from a positive electrode of the electrolyte-electrode assembly to the aqueous multi-electron oxidant in the acidic oxidant fluid; and transferring (702b) electrons from the reducer fluid to a negative electrode of the electrolyte-electrode assembly to produce the electric power in an external electric circuit operably connected to terminals of the discharge unit and to generate an acidic discharge fluid on consumption of the acidic oxidant fluid and the reducer fluid. The method further comprises: optionally neutralizing the acidic discharge fluid in a neutralization reactor of the discharge system to produce a neutral discharge fluid; maintaining stability of the acidic oxidant fluid by performing an ignition regime in the discharge system at low acid concentrations in the acidic oxidant fluid; and regenerating a certain amount of an intermediate oxidant and the reducer in the discharge unit from the acidic discharge fluid by applying an electric current of a polarity opposite to a polarity of electric current through the discharge unit during the discharge. The acidic oxidant fluid comprises water, the forms of the aqueous multi-electron oxidant, an extra acid, and counter cations. The concentration of the forms of the aqueous multi-electron oxidant in the neutral oxidant fluid and the acidic oxidant fluid supplied to the discharge unit is above one of 1M, 2M, 5M, and 10M. The concentration of acidic protons in the acidic oxidant fluid supplied to the discharge unit is below one of 0.1M, 0.5M, 1M, 2M, 5M, and 10M. The concentration of acidic protons in the acidic oxidant fluid stored in the discharge system is below one of 0.1M, 0.5M, 1M, 2M, and 5M. The transfer of the electrons from the positive electrode of the electrolyte-electrode assembly to the aqueous multi-electron oxidant in the acidic oxidant fluid is performed at a high current density and at low flow rates in an ignition mode of operation of the discharge system. The acidic discharge fluid comprises water, halide, hydroxonium cation, the extra acid, and the counter cations. The reducer is ammonia, hydrazine, hydroxylamine, phosphine, methane, hydrocarbon, alcohol, aldehyde, carbohydrate, hydride, oxide, sulfide, organic compound, and/or inorganic compound with one of each other, water, and another solvent. The generation of the acidic oxidant fluid from the neutral oxidant fluid is performed in the acidification reactor: via an electric field driven orthogonal ion migration across laminar flow process; and by an ion exchange on solids, an ion exchange in liquids and electrolysis, and adding the extra acid to the neutral oxidant fluid during the discharge of the discharge unit. The discharge is facilitated on the positive electrode of the electrolyte-electrode assembly by electrocatalysis, a solution-phase chemical reaction, a solution-phase comproportionation, a solution-phase redox catalysis, a solution-phase redox mediator, and/or an acid-base catalysis. The discharge is facilitated via a solution-phase comproportionation of the aqueous multi-electron oxidant with a final product of a reduction of the aqueous multi-electron oxidant. The solution-phase comproportionation is pH-dependent and the discharge is facilitated in a presence of an acid. INDEPENDENT CLAIMS are included for:    (1) a discharge system;    (2) a method for regenerating an aqueous multi-electron oxidant and a reducer in stoichiometric amounts from forms of a neutral discharge fluid using external power;    (3) a regeneration system;    (4) a method for regenerating an aqueous multi-electron oxidant and a reducer in an energy storage cycle;    (5) a method for regenerating hydrogen and an oxidant fluid; and    (6) a system for producing electric power and regenerating an aqueous multi-electron oxidant and a reducer in an energy storage cycle.    DESCRIPTION OF DRAWING(S) - The diagram shows a flow chart of a method for producing electric power from an aqueous multi-electron oxidant and a reducer and for simultaneously generating a discharge fluid.    Providing a discharge system (701)    Facilitating discharge of the discharge unit for producing an electric power from a neutral oxidant fluid comprising forms of an aqueous multi-electron oxidant (702)    Transferring electrons from a positive electrode of the electrolyte-electrode assembly to the aqueous multi-electron oxidant (702a)    Transferring electrons from the reducer fluid to a negative electrode of the electrolyte-electrode assembly (702b)    Producing electric power in an external electric circuit. (702c)