The King Portable Solar Tracker tracks the sun automatically from sunrise to sunset. It generates 4 times more energy than a fixed solar panel. Perfect for camping and RV adventures, it provides reliable, efficient power wherever you go, no hookups needed. Features a motorized system that continuously aligns the panel with the strongest sun rays, keeping your devices charged and your trips powered. Specs: .Max Power @ STC: 50 WOptimum Operating Voltage: 19.97 VOptimum Current: 5.01 AmpsOpen Circuit Voltage: 22.79 VMax System Voltage: 600 VDC Uses sun tracking method Helps prevent unnecessary repositioning on cloudy days. Durable to weather & wear | KING Mojave Portable Solar Tracker MST50