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, Samsung and Asus tablets and some GPS and Bluetooth devices are not supported.

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.