Reddit reviews Ryno-Tuff Portable Solar Charger for Camping - 21W Foldable Solar Panel Charger 2 USB Ports - Waterproof & Durable, Compatible with iPhone, iPad, Galaxy, LG, Nexus, Battery Packs, All USB Devices

HIGH EFFICIENCY SOLAR CELLS - Get up to 25% conversion by using the most powerful solar cells in the market - Sunpower X-Series. The 21w Solar Charger can charge your cell phone or tablet in as little as 2 hours. Never be stranded without power again. Compatible with iPhones, Android phones, tablets, batterypacks and any USB electronic device.MAXIMUM POWER IN A COMPACT SOLUTION- Our folding solar panel is smaller and lighter than other brands and equally powerful. Getting the same 21 watts in only 3 panels which extend to 11.8 inches wide by 18.1 inches high and weighing less than 1lb. When not in use, it folds to a really portable size of 5.9x11.8 inches. Making it so lightweight you won't even know your carrying it.UNIQUE iSOLAR TECHNOLOGY WITH ADDED SAFETY FEATURES - Charge 2 devices at once with the unique charging algorithm which will distribute power in the most efficient way. Will automatically stop charging when fully charged or device is overheated. Delivers 2.4amp per port with a max of 3amps when both ports are in use. You can also store the devices in the protective pocket while charging.WATERPROOF AND DURABLE - The rugged 600D waterproof PVC canvas material will protect your solar panel when backpacking, hiking, or traveling. Includes two carabiners for easy set up on your backpack or tent. We also offer a “Lifetime Warranty” so any time your solar panel USB breaks down during normal usage we will replace it free of charge.PLANT A TREE AND HELP US SAVE THE PLANET! Yes we are tough on the outside but inside we’re just real softies. In addition to providing you with quality products our mission is to protect the planet we live on especially its forests. We want to preserve the beauty we enjoy for the next generation. With every purchase of a Ryno Tuff Solar Charger we will plant a tree for you through the National Forest Foundation.