(EP871984-A1)      An electrolyte soln. for use in a lead-acid storage battery comprises: (a) sulphuric acid and water; and (b) a cathodic inhibitor soln comprising an inhibitor selected from triazine, thiourea, diethyl-thiourea, dibutyl-thiourea, propargyl alcohol, 1-hexyne-3-ol, hexamethylene tetramine, keto amine, triphenyl sulphonium chloride, and/or alkyl pyridine(s). Also claimed is a method of improving the performance of a lead-acid storage battery comprising adding a cathodic inhibitor to the battery housing disposed in an appropriate receptacle, and comprising at least one battery cell contg. a lead anode, lead oxide cathode, and an electrolyte soln. comprising 10-50 vol% H2SO4 in water.    USE -   The lead-acid storage batteries are used in automobiles, airplanes, ships, submarines, and construction equipment etc.    ADVANTAGE -   The electrolyte soln. works without entering strong ionic components into the electrolyte, thus reducing the possibility of short lived enhancements to the battery or premature loss of battery activity. The electrolyte soln. increases the performance, life, safety, reliability and efficiency of the battery, and provides greater performance under extreme temp. variations. The soln. also reduces gassing, and the possibility of explosion, and reduces corrosion of terminals, lead plates, lead posts and cables. The battery can remain idle for long periods without losing its charge.    (JP11505364-W)      An electrolyte soln. for use in a lead-acid storage battery comprises: (a) sulphuric acid and water; and (b) a cathodic inhibitor soln comprising an inhibitor selected from triazine, thiourea, diethyl-thiourea, dibutyl-thiourea, propargyl alcohol, 1-hexyne-3-ol, hexamethylene tetramine, keto amine, triphenyl sulphonium chloride, and/or alkyl pyridine(s). Also claimed is a method of improving the performance of a lead-acid storage battery comprising adding a cathodic inhibitor to the battery housing disposed in an appropriate receptacle, and comprising at least one battery cell contg. a lead anode, lead oxide cathode, and an electrolyte soln. comprising 10-50 vol% H2SO4 in water.    USE -   The lead-acid storage batteries are used in automobiles, airplanes, ships, submarines, and construction equipment etc.    ADVANTAGE -   The electrolyte soln. works without entering strong ionic components into the electrolyte, thus reducing the possibility of short lived enhancements to the battery or premature loss of battery activity. The electrolyte soln. increases the performance, life, safety, reliability and efficiency of the battery, and provides greater performance under extreme temp. variations. The soln. also reduces gassing, and the possibility of explosion, and reduces corrosion of terminals, lead plates, lead posts and cables. The battery can remain idle for long periods without losing its charge.