the ph of the forklift battery with distilled water should be kept in the range of 6.8 to 7.2. The charging and maintenance of forklift battery need distilled water to replenish electrolyte. Under normal circumstances, the distilled water used in the battery should have an appropriate pH value. The pH value of electrolyte solution of forklift battery should be kept between 6.8 and 7.2. The pH value in this range can help maintain the stability of electrolyte and ensure the normal operation and life of battery. Battery is a device that can convert chemical energy into electrical energy and store it, also known as accumulator or accumulator pile. It consists of one or more battery cells, and each battery cell consists of a positive electrode, a negative electrode and an electrolyte.