The invention relates to a production method of a battery medium, in particular to a production method of a battery repairing agent. It consists of ammonium molybdate, sodium hypophosphite, sodium pyrophosphate, sodium thiosulfate, ammonium chloride and distilled water. Put ammonium molybdate into distilled water, stirring, heating to above 60 DEG C, adding sodium hypophosphite and sodium pyrophosphate, stirring, then adding sodium thiosulfate, and finally adding ammonium chloride, and stirring for more than 45 minutes to obtain the finished product. The invention has the advantages of long service life, low cost and environmental protection, and can be used for repairing various scrapped batteries. The method is as follows: 1. A method for producing a battery repairing agent is characterized by comprising ammonium molybdate, sodium hypophosphite, sodium pyrophosphate, sodium thiosulfate, ammonium chloride and distilled water. 65438+ ammonium molybdate 0.0-2.0%, sodium hypophosphite 2.0-5.0%, 65438+ sodium pyrophosphate 0.0-2.3%, 65438+ sodium thiosulfate 0.0-2.3%, 65438+ ammonium chloride 0.0-2.3%, and the rest is distilled water.
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