SS4 Auto 10A - 4-Bank Lithium/AGM Battery ChargerLatest Technology:Detects if your battery is Lithium or AGMAutomatically charges both Lithium and AGM batteries for optimal performanceFully automatic. Completely and safely charges both Lithium and AGM batteriesAlgorithms designed and validated with battery manufacturers for a 100% chargeStartup feature will wake up batteries that have turned off due to low voltage protectionAuto return to charge featureQuickest charge times in its classUnbeatable performance, reliability, safety, and quality delivered by DUAL PRO®Features:Waterproof - Use on land and in fresh and saltwaterTROUBLE-FREE—Just Plug It In and Forget It!Independent outputsFully automatic/multi-stage chargingOn-board diagnostic codesFCC 15 Parts A & B interference compliantApproved and meets ISO 8846 Marine standardsIgnition protected (US Coast Guard 33 CFR 183.410)3-Year WarrantyAutoProfile Intuitive Charging Technology Lithium/AGMProfessional and Sportsman Series chargers have set the standard in the marine industry for more than two decades, known as the safest, most reliable, and best performing chargers in the industry.AutoProfile Intuitive Charging Technology provides flexibility for your charging system, ready for the ever-changing lithium battery technologies. No matter if you choose Lithium or AGM batteries for your boat, Dual Pro is ready to keep your boat on the water longer, enhancing battery performance and extending battery life.