This might be interesting for you remote campers

[Blind Squirrel]

No affiliation, just thought it is a neat idea.

 

https://www.kickstarter.com/projects/solarpod/solarpod-pyxis-the-best-portable-usb-charger?ref=nav_search

[JR356]

I prefer this:

http://shop.antigravitybatteries.com/micro-start-xp-1/

 

Can give multiple charges to multiple devices and still jump start your bike without a recharge.

Yes its a little bigger,but you don't need to carry the whole kit with you,just battery pack,jumper cables and your specific cables.

I just jumped my car 5-6 times over several days and unit is still indicating full charge.

There is a smaller version available.

 

I'm all for solar,have it on the house,but these small solar units are still not very powerful,take along time to charge and only have max output in direct sun.

 

JR356