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  • Anker® 2nd Gen Astro E3 Ultra Compact 10000mAh Portable External Battery Charger with PowerIQ™ Technology for iPhone, iPad, Samsung and More (Black)
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Anker® 2nd Gen Astro E3 Ultra Compact 10000mAh Portable External Battery Charger with PowerIQ™ Technology for iPhone, iPad, Samsung and More (Black)

by Anker
| 888 answered questions

Price: $79.99
Sale: $25.99 & FREE Shipping on orders over $35. Details
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In Stock.
Black
  • The Anker® Advantage: Join the 6 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 External Battery, Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service.
7 new from $25.99
$25.99 & FREE Shipping on orders over $35. Details In Stock. Sold by AnkerDirect and Fulfilled by Amazon.


Special Offers and Product Promotions

Color: Black
  • Get a $100 Amazon.com Gift Card: Get the Discover it chrome card and get a $100.00 Amazon.com Gift Card* after your first purchase within 3 months. Learn more.

Product Description

Color: Black

ANKER: Amazon's #1 Charging Brand

• The highest average review rating of any charging brand.
• One in three chargers sold on Amazon is from us.
• Join the 6 million+ satisfied customers powered by Anker.

2nd Generation Astro E3 External Battery
Portable powerpack perfection.

PowerIQ™ Detects your device. Delivers the fastest charge.
Exclusive to Anker, PowerIQ™ amp-adjustment technology intelligently identifies your device to deliver its fastest possible charge.

Ultra-High Capacity
Charge an iPhone over four times, a large capacity phone like the Galaxy S5 two and a half times or most tablets at least once.

Most Compact
The size and feel of a smartphone. The E3 is unobtrusive, lightweight and the most compact among batteries of this capacity.

Premium Performance
Industry grade materials, premium circuitry and a 92% efficient battery cell (up to 10% above the industry average) ensure complete reliability.

World Famous Warranty
At Anker, we believe in our products. That's why we back them all with an 18-month warranty and provide friendly, easy-to-reach support.

For Optimal Use:
• Use the included cable, your original cable or a third-party certified one (such as MFi).
• Compatible with Apple and Android smartphones, tablets (including the Nexus 7) and other USB-charged devices except for the iPod nano, iPod Classic, HP TouchPad, LG G2, Asus and some GPS and Bluetooth devices.


Product Details

Color: Black
  • Product Dimensions: 5.4 x 2.6 x 0.6 inches ; 8.2 ounces
  • Shipping Weight: 11.8 ounces (View shipping rates and policies)
  • ASIN: B009USAJCC
  • Item model number: AK-79AN7917-BA
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (5,364 customer reviews)
  • Amazon Best Sellers Rank: #95 in Cell Phones & Accessories (See Top 100 in Cell Phones & Accessories)
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Technical Details

Color: Black
  • Size (LWH): 5.39 inches, 2.64 inches, 0.65 inches
  • Weight: 8.16 ounces
  • Battery Type: Lithium Polymer
  See more technical details

Customer Questions & Answers

Customer Reviews

Works well, holds a charge for a long time and charges pretty fast.
Ryan C. Knapp
I love it, it's so convenient to be able to charge my phone on the go and not worry about needing an outlet.
ngvaynshtok
All in all, its a great product and you will get your money's worth.
Juan Avalos

Most Helpful Customer Reviews

1,369 of 1,418 people found the following review helpful By Kit Parenteau on May 27, 2013
Color Name: Black Verified Purchase
Pull out your big-pockets and don't expect something light, but this package provides plenty of power

«««««««««««»»»»»»»»»»»
The Praise (Good Things)
«««««««««««»»»»»»»»»»»
* Small form factor for the amount of battery content
* Charge status and level indicator LEDs
* Automatic power off
* PowerIQ(tm) feature to automatically route power and line connectivity based on the device plugged in
* Excellent value for cost

««««««««««»»»»»»»»»»
The Raze (Bad Things)
««««««««««»»»»»»»»»»
* Construction of the included cable is cheap

«««««««««««««»»»»»»»»»»»»»
The Haze (Things to Consider)
«««««««««««««»»»»»»»»»»»»»
* Slightly larger than a large Smart Phone
* Substantially heavier than a large Smart Phone
* Charges more slowly than the power it supplies
* Will not charge low-power-draw devices due to Auto-Off function
* Charging this device draws more power than some chargers can provide
* Does not come with an AC power adapter to charge itself so charging off USB is a very long process

»»»»»»»»»»»»»»
The Details...

REVIEWER'S NOTE:
AnkerDirect has changed the product on this ASIN to a "2nd Gen" version. Many of the older reviews are reviews of the original first generation. This review has been updated to the second generation product currently provided here.

This battery comes in a comfortable packaging with good instructions and a few interesting items. A double-sided mini-booklet advises how to get in touch with support in case of issues and solicits reviews in case of happiness. A short Micro USB cable is included as well.
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131 of 137 people found the following review helpful By Donna NaQuin on September 10, 2013
Color Name: Black Verified Purchase
I purchased this item about 8 months ago. for my cell phone. I LOVED it. It would charge my phone 4 or 5 times without needing a charge. All of a sudden a month or so ago, it won't even give me 1 charge. After plugging in the phone and pressing the button, all 4 lights light up, then I get about 25% charge and it's dead.. press the button, no lights. I just contacted Anker and left comment. I hope they have a solution. If they do, I'll give it 5 stars.
update 03.02.14: sorry I didn't update sooner. I emailed Anker and told them about the problem. They emailed me right away, asked for the model# and my address. They sent me another charger and didn't make me go to the post office and pay to return the old one. Then they emailed me a week or so later to make sure I got it and to see if it was working properly. I emailed them back thanking them for their awesome c.s. and told them that it's working great. I get 2 or 3 charges on my tablet or several on my phone with 1 charge. I not only would do business with Anker again, but I highly recommend them, their products and their c.s. is 2nd to none.
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384 of 420 people found the following review helpful By Paul Renwick on November 28, 2012
Color Name: Black Verified Purchase
For those readers that are reading this review on the Item page, this review is for the Astro3E 10000mAh charger. Since Amazon mixes reviews with all different "variants" of a product, and this comes in multiple capacities, this makes it hard to separate reviews.

This product does what it advertises, and does it VERY well. It comes with a nice mesh case which I carry it in constantly, and a nice little coiled USB cord with a few tips. While these aren't compatible with every device I own, I use it mainly to charge my phone, which is MicroUSB and included.

Some devices I have tried charging:
- I own a Motorola Droid 4, and I have charged the phone from dead to full over 4 times on a single charge. Android and Apple ports work, but on the Android port, the Droid 4 actually charges FASTER than the stock plug-in charger. My phone does not seem to mind.
- An LG Ally charges on either port, but faster on the Android port.
- A Nintendo DS Lite (with a compatible USB cord) charges on either port.
- An iPod Nano 6th Generation charges on the Apple port. It does not respond on the Android port. I have charged this device from dead to full, and did lose enough capacity on the battery for it to register.

I will update this review with more results as I charge more devices. I'm going on a few flights in the next couple of months, so this charger will gets LOTS of use.
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308 of 383 people found the following review helpful By Christopher E. Robison on December 6, 2012
Color Name: Black Verified Purchase
I don't actually like giving 5-star reviews, and on this one I hovered over 4 stars thinking to myself, well ... what's actually wrong with it? What can I deduct a star for? It doesn't actually charge itself magically from the luminiferous ether, it doesn't fly or bake cookies, and it definitely doesn't impress the ladies. Maybe they'll work these features in.

I've just received it and used it a couple times, so maybe I'll find a serious problem with it in the future. But for now, I'm really impressed with the apparent quality and functionality of the device. I can't really find anything serious to complain about.

Make no mistake, this thing is not subtle. It's bigger and heavier than my Galaxy SII (a fairly large-screen phone), though the dimensions are comparable with the phone when my rubber case is on it. It's massive, like a plate of armor or a piece of a big stone tile, and feels nearly as dense and solid. At 37Wh of capacity and up to 3A of current, the size and mass is definitely justified though, and it's obvious that they didn't waste any internal volume with hollow spaces in the enclosure. It hangs heavy in your pocket, but then we knew that was the deal before we bought a 10 amp-hour auxiliary battery, didn't we?

As an aside, this is the kind of thing that seems to deserve its own new kind of clothing to carry and conceal it. Since it's mainly going to be tech geeks who are interested in carrying around so much gadget fuel, and nerds like me tend to have a pretty substantial anterior pelvic tilt from sitting in front of computers all the time, maybe there's a market for some kind of garment that will hide a device like this in the curvature of the lower back, providing an "outlet" through your clothing somewhere around the belt.
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Most Recent Customer Reviews


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Anker® 2nd Gen Astro E3 Ultra Compact 10000mAh Portable External Battery Charger with PowerIQ™ Technology for iPhone, iPad, Samsung and More (Black) + Pwr+® 6.5 Ft Rapid 5V 2A Charger AC Adapter for Anker Astro, E3, E4, E5, Mini, Slim2, Slim3, Astro2, 2nd Generation Astro 3, SlimTalk / New Trent iTorch IMP52D, CarbonPak, Easypak, iMirror, PowerPak+ / Limeade Blast L130X L180X L50X2L L50X2M / Jackery Bar, Giant, Mini / EasyAcc / PowerGen Mobile / PowerBot External Battery Pack Portable Universal USB Power Bank Backup
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