Anker PowerCore 20,000 mAh Portable Charger for Most USB-Enabled Devices Black A1272H11 - Best Buy
Amazon.com: Anker PowerCore II 20000, 20100mAh Portable Charger with Dual USB Ports, PowerIQ 2.0 (up to 18W Output) Power Bank, Fast Charging for iPhone, Samsung and More (Compatible with Quick Charge Devices) :
PowerCore 20100
Anker Micro USB; USB A Power Bank in the Mobile Device Chargers department at Lowes.com