Electric forklift battery charging battery deep discharge mode, electric forklift battery charging battery although deep circulation system charging battery, but if there is no power before, the electrode vulcanization will accelerate, the high efficiency and low efficiency of the battery are caused by frequent high current discharge, the automatic forklift is limited to 1.5 tons, the long-term forklift is more than 1.5 tons or close to 1.5 tons, the depth of discharge is also very harmful to the battery life, the deeper the discharge depth of the battery, the lower the application frequency of its circulation system. Although low current discharge can improve the efficiency of the battery, when the low current discharge time is long, the specific discharge capacity of the battery will exceed its short-circuit capacity, leading to serious deep discharge. When the depth of battery charge battery discharge reaches the limit, it is necessary to prevent long-term load discharge leading to battery charge battery deep discharge, more importantly, to prevent battery charge battery short-circuit fault discharge. In addition, according to the electric forklift battery charger battery life of 1500 cycles, if the long time of deep current discharge, the service life of half the original. Electric forklift battery charging battery although deep circulation system discharge charging battery charging battery, but if there is no electricity in the past, the plate vulcanization will speed up, the high efficiency of battery charging battery pack is often due to large current discharge, the limited weight of the electric forklift is 1.5 tons, and the long-term cross cargo is more than 1.5 tons or close to 1.5 tons, the lower the application frequency of the circulatory system, the higher the efficiency of the battery when the small current discharge energy increases, but when the small current discharge for a long time, the specific discharge capacity of the battery will exceed its short circuit capacity, this will lead to serious deep discharge when the depth limit of battery charge is reached, which will affect the long-term use of the battery charge.