Unplugged mobile power goes ultimate.

Powerful confidence.
With enough power to top off your smartphone up to 4 times or your tablet once, travel abroad, spend a night on the town or do something more mundane – all with confidence your gadgets won’t die.

Bag-sized portability.
Designed for portability, this powerful bar-shaped battery slips easily into your bag for use when you need it on the go. No need to worry about it bouncing around in there, the rugged, high-grade plastic outer shell takes in-bag abuse with ease.

All-in-one charger.
Not just powerful and portable, but also delightfully detailed. Check the remaining power on the four-LED power meter with a click of the power button. We’ve also included 3 broadly-compatible adapters and 2 cables. Pack the combo in the travel pouch and have all you need for mobile charging.

For optimal use.
• For simultaneous, max-speed charging of your Astro and other devices, check out Anker’s new 25W 5-port wall charger or dual-port 24W car charger.
• Compatible with all Apple and Android smartphones, tablets and other 5V input USB-charged devices. The iPod nano, the Samsung Tab2, Asus tablets (not include the Nexus 7), the LG G2 and some GPS and Bluetooth devices are not supported.
• To ensure complete safety and best performance, we strongly recommend using your device’s original cable, a third-party certified cable (such as MFI) or our included cable.

Get to know us.
The Anker® Astro external battery has been voted #1 in class by thousands of online reviewers, while our renowned customer service has made us a fan-favorite across the web. Every sale includes an 18-month, worry-free guarantee to prove the importance we set on quality. After all, we’re customers too.

3 thoughts on “Anker® Astro2 8400mAh Dual USB Portable Charger External Battery Power Bank Pack with Built-In Flashlight for iPhone 5S, 5C, 5, 4S, iPad Air, mini, Galaxy S5, S4, S3, Note 3, Nexus 4, HTC One, One 2 (M8), Motorola Droid, MOTO X, G, and most other USB-charged devices (Apple adapters – 30 pin and lightning, not included)

  1. r.garcia says:

    Well built and attractive quality battery pack. After using this battery pack for about a week, I make the following observations, in order of personal significance:1. Build quality: The battery pack feels, in a word, solid. There is no flimsy plastic deflection if you press on it and no creaky or uneven seams.2. Looks: The pack looks great. Yes it is a fingerprint magnet, but it also wipes cleanly to a beautiful gloss to match most smartphones out there.3. Utility: Very versatile. One port for smartphone and most usb powered gadgets, the other higher amperage port for more power hungry devices, like tablets. I’ve even used this to charge AA batteries with a usb AA charger. There’s nothing I’ve tried that this won’t charge. Also has a built in led “flashlight,” but more on this later.4. Convenience: This pack will charge easily with any usb charger. Standard micro usb connector means you won’t have to go searching for a special cable to plug this in and charge it. This pack…

  2. N. Ta "NT" says:

    Nice design and size but subpar charging capability, long charging time, and price inflation. Here is my unbiased review of Anker Astro 2 8400mAh external battery pack:Charge Efficiency: Its rated at 8,400mAh as it’s capacity. The lithium ion battery may have that capacity but it’s ability to charge other devices isn’t so hot. I understand the Anker power bank needs power of its own to operate and conversion from 3.7v to 5.0v takes energy. I wasn’t expecting 100% of 8,400mAh to fully charge into other devices totaling up to 8,400mAh. But I was expecting it to be efficient. I did 5 charge and discharge cycles (though it may not be necessary on lithium batteries but I did it anyways to calibrate it) then I went on with my test to see how much it can charge my Kindle Fire, HTC Evo 3d, HTC Evo, Kindle reader, and portable speaker. Yes, the devices I were charging were completely off to preserve energy for charging only instead of also powering it on. The first charge cycle it totaled 5,425mAh (64% efficiency), 2nd is 6,032mAh (71.81% ), and 3rd is 5,280mAh…

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