Sunforce 50044 60-Watt Solar Charging Kit with Battery for $289.99 shipped. Here is a screenshot for your reference. It is designed for RVs, homes, boats, and back-up power use. It provides up to 45-watt electrical power, and includes four 15-Watt solar panels with durable mounting frames, a 200-Watt power inverter, a 7-Amp solar charge controller, and a wiring kit with accessories. It usually sells for about $379.