The Anker Astro E5 is a complete BEAST when it comes to portable power. This thing has the ability to recharge your phone up to eight times, on a single charge of its own. It can power phones and tablets. This incredible external battery could get you through a power outage, and they know it, adding a powerful LED flashlight on the front. 

The Astro is desirable because it provides you with the confidence that you’ll always have access to your devices.