I decided on the Joos Orange for solar power, which arrived today. Very quick customer service! We’re just ten days out from the winter solstice, the sun is low but present, and the device is charging. Whoo hoo!
The Joos Orange is a combination of solar panel and storage battery. It looks to be pretty tough, and is waterproof as well. Perfect for our adventure.
The unit arrived with a variety of adapter tips, one of which will allow me to charge the iPhone and iPad. What I need to find is an adapter that will allow me to charge my camera battery charger.
4pm update: in approximately four hours of indirect, low light conditions, my battery has gone from zero to twenty+ percent charge. Not bad for a winter day!