windynation complete 400 watt solar panel kit with 1500 watt vertamax power inverter rv, boat, for off-grid 12 volt battery windynation the windy nation 400 watt complete solar charging kit + vertamax 1500 watt power inverter comes with everything you need to start producing free, clean power from the sun! perfect for rv's, boats, cabins and back-up power! windynation's 400 watt solar kit with inverter includes everything you need to get started: 4pcs 100 watt polycrystalline solar panels, 1500w vertamax 12vdc to 120ac modified sine wave power inverter (inverter cables are included), 30-amp p30l solar charge controller, 40 ft of ul listed 12 awg solar cable, all necessary connectors for wiring, and all the necessary mounting hardware. product photos above show pictures of all the included items and additional technical information. the windynation 400 watt solar charging kit with 1500w vertamax inverter is the ideal solution for providing back-up power or off-grid power when you need it!