SMARTCHARGE TECHNOLOGY: Keep your battery at peak health with this charger & maintainer compatible with various batteries including Lithium Ion, Lead Acid, Gel & Calcium - ideal for stop-start vehicles SMART: This Ring battery charger provides intelligent charging to prevent overcharging, with automatic maintenance as an alternative to a trickle charger for car battery care. CHARGE FLAT BATTERIES: Charges and restores batteries from as low as 1 Volt, helping bring deeply discharged batteries back to life. EXTENDED CABLE REACH: Long clamp cables provide greater flexibility when testing, making it easier to access batteries in hard-to-reach locations and work around larger vehicles with less hassle. IP65 WEATHER-RESISTANT DESIGN: Built to withstand dust and water ingress, making it ideal for charging vehicles outdoors on driveways and other exposed locations with confidence.