GoalZero Guide10 Plus
WIll it charge my iPhone 4, 4S, 5? iPad etc.
Yes, it will charge an iPhone 5 from 0 up to 100% and then from 0% up to about 10%.
I tested this with a fully charged set of the supplied batteries, from the phone having shut itself down with no power, up to 100% in flight mode and then back to 0 and up again. So you can expect to get 1 full charge from the battery pack.
However, there is a huge caveat emptor with this - When I originally received the Guide 10+ I found the supplied batteries were not holding full charge. I had to recondition them using a good battery charger first in order to get them back up to full capacity.
Fully capacity in this case was around 2200mAh per cell.
With the batteries all charged to around 2200mAh per cell I was able to get the full charge from the Guide 10+, before that I had real problems getting even a 50% charge from the device.