The best power Bank for most users is the [amazon link="B075LBHQVZ" title="RAVPower Portable Charger 20,000 mAh Battery Pack" /]. It has an impressive 20,000 mAh charging capacity, allows you to charge multiple devices at the same time and displays remaining battery power.
Source
This post first appeared on Coolest Gadgets - Reporting On The Latest Cool Gadgets, please read the originial post: here