The Mophie Power Boost XXL (20,800mAh) Dual USB Power Bank Charger. Black bank color.

Features:
- Rechargeable 20, 800 Mah battery extends your battery by 8X giving you up to 100 hours of extra battery
- Two high-output USB charging ports with a total output of 4.2A enables you to quickly charge two power-hungry device simultaneously.
- LED power indicator displays battery levels and charge status. Know before you go.
- Triple-tested battery ensures peak performance and safe operation
- The No.1 and most trusted brand in portable power.