They are pricey, but Ascent Solar are probably the best panels out there. The technology is awesome, it is used on satellites. I have a couple XD12's and I pair them with a Fenix ARE-X2 charger. The ARE-X2 can charge multiple types of batteries plus act as a battery bank to charge devices. It will charge my phone, but mostly it is for my Garmin, lights, and radios. While the all in one devices are nice and compact, they are not very rugged or durable. At the Ascent Solar building (120th and Washington, they are a Colorado company), they have examples of how durable their panels are. They have one with bullet holes through it, still working. This setup may be slightly different than what you are looking for, but for durability nothing is better.