Anker makes solid external batteries, and there's a nice deal on one of the larger ones over at Amazon right now. The Anker Astro E3 with 10,000mAh of juice can be yours for $25.99. This unit has a retail price of $80, but of course, you're never going to pay that. It usually bounces around $40, so this is still a good deal.


The Astro E3 has two USB ports that can output 3 amps to charge the most demanding devices. Remaining power is indicated by four LEDs on the face of the battery. Anker promises over 500 charge cycles and offers an 18-month warranty. This is currently the number 1 best seller in Amazon's battery section, so it seems like a safe bet.

[Anker Astro E3 10,000mAh on Amazon]

Ryan Whitwam
Ryan is a tech/science writer, skeptic, lover of all things electronic, and Android fan. In his spare time he reads golden-age sci-fi and sleeps, but rarely at the same time. His wife tolerates him as few would.

He's the author of a sci-fi novel called The Crooked City, which is available on Amazon and Google Play. http://goo.gl/WQIXBM

  • Jon Leach

    This can charge my Moto X and Nexus 7 from 0 to 100% at the same time. Hell of a steal

  • Ryan O’Neill

    But.. will it explode? I'd hate to see a 10,000 mAh battery blow up in someone's bag or backpack.

    • Ryan

      This isn't an aftermarket battery that goes within the phone itself. This is a portable charging unit which acts a bit different than a typical battery in a phone does. Aftermarket batteries is a risk someone pays for without first doing research in the quality of batteries. Which is why most should go OEM instead for that purpose.

  • Winston
  • Linh

    I ordered the E5 early last week, and still have not been shipped. Beware.


    You're gonna need it for all those Android phones which have terrible battery

    • supremekizzle

      LG G2 bitch.


        That's one laggy phone

        • supremekizzle

          LMAO. You've clearly never used one... Feeding time is over, troll.

  • navneetnangia

    There is no deal on Amazon.ca.. Why do these guys only have deals in US.

    • nico_fr

      It may come soon in Europe we have the "Anker 2nd. Gén. Astro3 12000mAh" for 40€ + free shipping on Amazon.

    • vn33

      That's why I hardly order things from Amazon.ca
      Having access to a mailbox in a UPS store in Lewiston, NY helps!

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  • Lamm

    I have one of those, but mine is from Sony. 7500mah. Best accessory I ever purchased for my phones.

  • Aidan Ireland

    I bought one of these a few months ago and I can confirm that it's a great battery. Well worth it if you're thinking of getting one.

  • Mrfett79

    I bought the
    EasyAcc12000mAh Power Bank
    and have been very happy. It can charge 4 devices at once and is only $37.99 on amazon. Might want to check it out for just a few dollars more.

  • eHerkules
  • Bill

    Do thay ship to Israel ??