Dual Power 36/12V Dual Output Battery ChargerDual Power Series-Intelligent High Frequency ChargerPro Charging Systems new Dual Power Series of chargers simultaneously charges your main battery independently and the rest of your batteries in series. The result is fast, dependable and efficient charging. The product also leverages powerful exclusive technologies to further enhance the energy management status of fresh and saltwater boats.PRODUCT FEATURESDynamic Intelligent High Frequency ChargingCharges Wet Cell, AGM, Gelled Electrolyte and Lithium Batteries Charges Main Battery Independently and Additional Batteries in Series Quickly and Efficiently Charges and Conditions Batteries Smaller Form Factor and Half the Weight of Transformer Based ChargersIP67 & IP68 Pending89% Overall Efficiency.98 Power FactorCommunicates with Smartphones via Android and iOS AppsDELTAVIEW LINK Provides wireless access to remotely monitor charge details of your batteries from your portable device. (Free download from your Apple store or via the link below for Android)Allows you to modify the charge algorithm