I tried a $20 solar USB battery pack combo device and it was pathetic. There are more expensive options that would probably work better. Not all emergencies are

I tried a $20 solar USB battery pack combo device and it was pathetic. There are more expensive options that would probably work better. Not all emergencies are during the day or near powerful light sources. The Ampy Move is $100 and doesn't work. http://www.cnet.com/products/ampy-move/ http://www.cnet.com/products/ampy-move/