The Victron Energy MultiPlus 12/2000/80-50 Inverter with Charger is a multi-functional inverter/charger. It has four-stage adaptive charging with the ability to charge dual battery banks. With multiple units, the Victron MultiPlus has Split-Phase and Three-Phase capabilities as well. Up to six MultiPlus units can be connected in parallel for even more power! It also has PowerControl and PowerAssist for those times when you are working with limited generator/shore power or when you need to use multiple power sources to power a large load.