MultiPlus Inverter/Charger 12V DC 3000W, 120A Charger, 50A SwitchMultiPlus 12 3000 120 50 120V VE. Bus (UL) The MultiPlus, as the name suggests, is a combined inverter and charger in one elegant package. Its many features include a true sine wave inverter, adaptive charging, hybrid PowerAssist technology, plus multiple system integration features. The MultiPlus will prevent overload of a limited AC source, such as a generator or shore power connection. First, battery charging will automatically be reduced when