eBike Ultra Corrosion Defence uses state of the art anti-corrosion additives and inhibitors to provide class-leading protection against corrosionLONG TERM PROTECTION! Introducing the ultimate protection for bike batteries and components. eBike Ultra Corrosion Defence uses state of the art anti-corrosion additives and inhibitors to provide class-leading protection against corrosion. It even works on surfaces that already have rust and corrosion... it simply stops rust in its tracks! It drives out moisture and leaves a protective anticorrosive layer on your bikes frame, battery casing, battery terminals, metal parts, plastics and paintwork to keep the harmful effects of moisture at bay.