The Go Power! Inverter Charger is a breakthrough product where you get top features, quality, and performance at an economical price. The inverter charger is a 3-in-1 system combining an inverter, battery charger and automatic transfer switch. This saves space and simplifies installation by reducing the number of devices and cables to install. While most inverter chargers offer a 30 Ampere transfer switch, the IC-3000 provides two 50- Ampere legs. That means when connected to shore power 50-Ampere service (240 Volt), you can draw up to 12,000 Watts of power! also compatible with 30-Ampere service. One end mounts onto your battery and the other end plugs into the inverter charger.