We are professional solar chargerÿfactory in Chinaÿwith more than 10 years expierance in making solar products. We provide warranty of 1 year andÿ5 days no reason return for defect solar chargers.ÿThis super high efficiency solar foldable charger is with 6pcs 5w solar panels total power over 28w to 30Wÿwith dual usb output 5v 3900mah output and 18v 1500mah output can charge smartphonesÿand laptops. Low price foldable solar charger, we are factory, we can provide u the low price, assure the quality and delivery time.