The Victron Energy Quattro 48/10000/140-100/100 Inverter with Charger is a multi-functional inverter/charger with 20,000W of peak power!!. The Quattro series inverter/chargers can be connected to (2) different AC sources (i.e. Shore Power and/or Generator). It will automatically connect to the input that is active. The Quattro also has four-stage adaptive charging with the ability to charge dual battery banks. With multiple units, the Victron Energy Quattro has Split-Phase and Three-Phase capabilities as well. Up to six Quattro 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.