Anker Astro E1 5200mAh Portable Charger External Battery Power Bank
I USE ONE OF THESE, absolutely brilliant!
The Anker Advantage: Join the 10 million+ powered by our leading technology.
Exclusive PowerIQ Technology: Detects your device to deliver its fastest possible charge speed up to 2 amps (four times faster than a computer USB port). Does not support Qualcomm Quick Charge
High Capacity: Add over one and a half charges to an iPhone 7 or 6s or at least one full charge to a 7 Plus, Galaxy S7, Nexus 5 or other smartphone. Or even an 80% charge to an iPad mini.
Incredibly Compact: The size of a small candy bar (3.8 × 1.7 × 0.9in, 4.2oz) it fits perfectly in your pocket. Recharges in 5 hours with a 1A adapter (not included) and the included Micro USB cable.
What You Get: Anker Astro E1 Portable Charger External Battery Power Bank, Micro USB Cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service. Lightning cable for iPhone / iPad sold separately.
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