Amazon offers Anker Astro3E 10000mAh Dual 5V 3A USB Output External Battery Pack Charger for $21.99The Anker® Advantage: Join the 10 million+ powered by Amazon's #1 charging brand.
Exclusive PowerIQ™ Technology: Detects your device to deliver its fastest possible charge speed up to 3 amps.
Ultra-High Capacity: Charges the iPad Air almost once, the Galaxy S5 two and a half times, the iPhone 5s four and a half times and other smartphones multiple times.
Most Compact: Slim, sleek, smartphone-like design featuring a 4-LED power meter. Recharges in 6 hours with a 2 amp adapter (not included) and the included Micro USB cable.
What You Get: Anker® Astro E3 Portable Charger External Battery Power Bank, Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service. [ Shop Now ]
