Superb Efficiency: On cloudy days, solar panels can readily be charged and can convert up to 23% of sunlight into solar energy. Intelligent Alignment: Using Anchor's exclusive Suncast technology, all you have to do is move the solar panel to face the sun for optimal charging. Designed for Powerhouse: The Anker 531 solar panel is a perfect all-in-one solution for road trips, camping trips, mobile homes, and more because it works with Powerhouse 521 and 535 (separately available). Two devices can be charged simultaneously with the light solar panel's USB-C and USB-A outputs. Exceptionally robust: The solar panel lasts longer than any adventure and is impervious to weather and scratches. Adjustable Bracket: Just place the solar panel in the bracket's adjustable position so that it gets