The acid cooling system plays an important role in determining the efficiency and safe operation of the plant. It is used for lead acid battery filling applications. The filling of batteries with sulphuric acid in high ambient summer temperatures causes fast rates of in-battery reaction with evolution of corrosive fumes and distortion of the plastic battery casing. The in-line polyethylene-cooling unit would typically reduce ambient temperatures of 35ēC to a filling temperature of 0ēC hence reducing reaction rates and eliminating distortion of the battery casing. This allows faster filling of batteries without the evolution of corrosive fumes and prevents jamming of battery conveyor systems causing production down time.