Rating: 7 out of 10
Pros: Cheap device that will be able to power up your other mobile devices from AA batteries
Cons: I get only one full charge from 4 AA Energizers and battery indicator sometimes isn’t showing the correct battery level.
Overall: This is a good solution for some emergency situations such as camping or other places where there is no electricity – all you have to do is carry a few spare AA batteries with you and charge your device from them.