GreatShield PowerTube External Battery Charger
Where to buy:
http://www.amazon.com/dp/B00FGY5SES/k...
Built to Last
The PowerTube comes with built-in short circuit and over-charge protection. The PowerTube uses rechargeable lithium-ion battery supporting more than 500 charge cycles during the course of the PowerTube's life.
Sturdy and Stylish Design
Designed to provide convenience for the goers, the PowerTube is built with dependability and functionality in mind. With the suction cup stand that comes with the PowerTube, it acts as a stand or pillar giving you the advantage to view the phone horizontally or vertically. The anti-static microfiber wiper provides a convenient way to clean your device at any time. A minimalist but still ready for power backup, the PowerTube is your device's perfect power friend.