PS4 Auto 4 Bank Battery Charger with 3 Bank B.O.S.This kit includes Dual Pros B.O.S. Battery Optimization System – 12V – 3-Bank (PN: BOS12V3) and Dual Pros PS4 Auto 15A – 4-Bank Lithium/AGM Battery Charger (PN: PS4AUTO).B.O.S. (Battery Optimization System) – 12V – 3-BankB.O.S. actively shuttles energy between batteries to keep the pack balanced, increasing battery strength and longevity.Batteries in a pack will become out of balance and the pack is only as good as its weakest link. In watercraft applications, this is further compounded when the trolling motor battery is used for peripherals and/or to assist the cranking battery.B.O.S. actively shuttles energy as needed between batteries wired in series to ensure equal voltage before, during, and after charging.B.O.S. keeps packs balanced, enabling maximum performance, and quadruple run time on the water.Premature battery failure due to an unbalanced pack has been, unfortunately, accepted as the norm for decades. The B.O.S. answers this call with a BSAP-24 algorithm that can accurately predict and select the battery that needs additional energy to match the other batteries within the pack. This simultaneously and successfully extends the life of each battery in the pack, as well as increasing run times.Features:Available in 6V, 8V, and 12V configurationUp to six batteries in a seriesBattery Selection and Prediction (BSAP-24) algorithmLess than 1mA sleep modeTransfer rate up to 7.5ASelf-poweredAny type of battery chemistryUsed in Any Application Where Batteries Are in Series:MarineGolfIndustrialAerial EquipmentSolar PowerElectrical VehiclesCommunicationsDefense/MilitaryPS4 Auto 15A – 4-Bank Lithium/AGM Battery ChargerLatest Technology:Detects if a 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% chargeThe startup feature will wake up batteries that have turned off due to low-voltage protectionAuto return to charging featureQuickest charge times in its classUnbeatable performance, reliability, safety, and quality delivered by DUAL PROFeatures:Waterproof – Use on land and in fresh and saltwaterTROUBLE-FREEJust 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 a charging system, ready for the ever-changing lithium battery technologies. No matter if users choose Lithium or AGM batteries for the boat, Dual Pro is ready to keep a boat on the water longer, enhancing battery performance and extending battery life. Specifications:Charger Input – Voltage: 120vCharger Output – Amps: 60aCharger Output Voltage: 12/24/36/48vCharging Banks: 4Portable: NoBox Dimensions: 3″H x 6″W x 9″L WT: 35 lbsQuick Guide (pdf)Owner’s Manual (pdf)Brochure (pdf)