NOVELTY - Reducing the water content and/or the acid content in a non-aqueous electrolytic solution for a secondary battery comprises contacting the non-aqueous electrolytic solution with a triazine compound (I).    USE - (I) is useful for reducing water content and/or acid content in non-aqueous electrolytic solution for secondary battery (claimed).    ADVANTAGE - In the method of reducing the water content and/or the acid content in a non-aqueous electrolytic solution for a secondary battery, at least one of the acid content or the water content of the non-aqueous electrolytic solution is reduced by at least 10% of its original value, both the water content and the acid content of the non-aqueous electrolytic solution are reduced by at least 20% of their respective original values, or at least one of the acid content or the water content of the non-aqueous electrolytic solution is reduced by at least 30% of its original value. The method of preparing a non-aqueous electrolytic solution for a lithium battery, produces an electrolytic solution comprising less than about 10 ppm water and less than about 20 ppm acids (all claimed). After treatment with (I), the concentrations of acids and water in the electrolytic solutions are substantially decreased.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) a method of making a secondary battery comprising: providing an electrolytic solution comprising a non-aqueous electrolytic solvent and a lithium containing salt; contacting the electrolytic solution with (I); removing substantially all of (I) from the electrolytic solution; laminating and winding a cathode, a first porous separator, an anode and a second porous separator; placing the wound laminated electrodes and separators in a battery case; infusing the electrolytic solution into the battery case; and sealing the battery case containing the electrodes, electrolytic solution and separators; and    (2) a method of preparing a non-aqueous electrolytic solution for a lithium battery comprising: contacting a non aqueous electrolyte with (I) to produce an electrolytic solution comprising less than about 20 ppm water and less than about 50 ppm acids.