Inv/Charge MultiPlus 12/3000/120-50 120V VE.Bus, UL Certified, PMP122301102UL 458 & UL 1741 Certified The Victron Energy MultiPlus 12 3000 120 50 120V VE. Bus Inverter charger is a powerful true sine wave inverter. This sophisticated battery charger, featuring adaptive charge technology alongside with a high speed AC transfer switch in a single compact enclosure will prevent overload of limited AC sources, such as a generator or shore power connection. In the event of a grid failure or when shore or generator power is