QuattroOverview Sizing Benefits Like the MultiPlus, the Quattro is an all in one inverter and battery charger, with an internal transfer switch. While the Multiplus has a single AC input, the Quattro has two independent AC inputs, allowing direct connection of both shore and generator power. Quattro inverter chargers are Victrons most flexible units and can be configured into a variety of systems, including traditional DC coupled solar, hybrid systems, and