Battery De-Mister® is a patented battery oil additive that when added to any lead acid battery will increase your batteries life while greatly reducing the batteries need for maintenance. When you charge a battery that has Battery De-Mister® in it, the hydrogen and oxygen gases migrating to the surface are slowed by the oil, virtually eliminating the acid mist and fumes generated in the charging process. With virtually no mist and much less gassing, the battery top remains free of acid deposits, thus the chemistry of the electrolyte remains the same while greatly reducing water consumption, toxic fumes, explosion and thus eliminating post and cable corrosion while greatly reducing current leakage across the battery cover. Battery De-Mister® is safe for all new and used lead acid batteries and comes with a 100 percent guarantee.