The instant I acquired the Universal Solar Charger USB Edition, I was doubtful about its compatibility with all of my various equipment. I regularly carry a mobile computer, kindle unit, and GPS. Being compatible with my GPS device is particularly critical, because i take pleasure in hiking and quite often use GPS to track my location. The Universal demonstrated that it is certainly capable of recharging all of my devices with out trouble. The Universal comes with a various battery charger heads that enable it to plug into several different devices. It is worth noting that the package doesn’t include a micro USB charger head, which is needed for the kindle and other smaller mobile products. Fortunately, it was a little enough item to get elsewhere.