The vanadium electrolyte developed by the company has better electrochemical performance, the metal impurity content is obviously better than the national standard grade one, and most of the parameters are better than international standards. 140mA/cm2 current density constant current charge and discharge curve of a single battery. Compared with the original electrolyte, the charging voltage is reduced by 35mV, and the discharge voltage is increased by 90mV, which improves the voltage efficiency of the battery. Compared with the original electrolyte, the new formulation electrolyte will extend the charge and discharge time, for example, the discharge time is extended from the original 38 minutes to 58 minutes, and the performance is improved by 53%.