In order to pursue high quality heavy duty batteries, we are constantly develop and produce batteries. Our battery terminals are made of pure lead, which is low resistance and high conductivity. It leads to high Cold Cranking Amps. We use advanced technology so as to reduce maintenance required and water loss. Heavy duty batteries is our hot sales batteries. According to the type of starting automotive battery, we usually divide heavy commercial battery into maintenance free battery(MF) and Dry charged battery. The maintenance free battery is with acid and the user needn’t add the electrolyte before using. Dry charged battery can save the shipping cost because it is not acid. The customers can decide the heavy commercial batteries on the basis of their own need.