The invention discloses a method for producing battery-level refined nickelsulfate with electrolyte. The method comprises the following steps: (1) concentrating and crystallizing: putting the nickel-containing electrolyte in which the copper is removed (nickel content is greater than or equal to 1 g / L) into a reaction kettle, steam-heating, concentrating and separating to obtain coarse nickel sulfate; (2) oxidizing to remove iron: dissolving the coarse nickel sulfate in water, and adding hydrogenperoxide; (3) vulcanizing to remove copper, lead and zinc: vulcanizing to remove copper, lead and zinc through the reaction of sodiumsulfide and sulfuric acid; (4) concentrating to remove calcium and magnesium: removing calcium and magnesium by evaporation and concentration; (5) removing calcium and magnesium with sodiumfluoride: under the action of mechanical stirring, adding second-grade sodiumfluoride, and controlling the pH value with alkali liquid so that calcium and magnesium become fluoride precipitates to be removed; and (6) concentrating and crystallizing: concentrating the purified solution, and crystallizing to obtain the battery-level refined nickel sulfate. The product produced by the invention is an emerald granular crystal which is a square crystal, and the crystal grain diameter is greater than 2 mm and conforms to the HG / T2824-1997 standard.