Here is a solar generator that lets you charge your smartphones during power outages and outside. The KaliPAK 201 has 4 USB charge ports and can be controlled from iOS and Android device. With solar and battery power, you can charge an iPhone up to 32 times
The solar charger also has space for your keys and other small items. You get 2 12V DC ports for lighting. Costs under $600 at this time.