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  • Anker® 2nd Gen Astro E4 13000mAh External Battery Portable Dual USB Charger Power Bank. PowerIQ™ Broad Compatibility, Fast Charging, High Capacity, Ultra Compact. For iPhone 6 5S 5C 5 4S, iPad Air mini, Galaxy S5 S4 S3, Note 3 4, Tab 4 3 2 Pro, Nexus, HTC One, One 2 (M8), LG G3, Nexus, MOTO X and More (Black).
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Anker® 2nd Gen Astro E4 13000mAh External Battery Portable Dual USB Charger Power Bank. PowerIQ™ Broad Compatibility, Fast Charging, High Capacity, Ultra Compact. For iPhone 6 5S 5C 5 4S, iPad Air mini, Galaxy S5 S4 S3, Note 3 4, Tab 4 3 2 Pro, Nexus, HTC One, One 2 (M8), LG G3, Nexus, MOTO X and More (Black).

by Anker
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Price: $89.99
Sale: $29.99 & FREE Shipping on orders over $35. Details
You Save: $60.00 (67%)
In Stock.
Black 13000mAh
  • PowerIQ™ technology maximizes compatibility with Android, Apple or other devices by enabling charge speeds of up to 3 amps.
  • Huge 13000mAh capacity charges an iPhone 5s almost 6 times, a Galaxy S5 over 3 times or an iPad Air once.
  • Compact profile, sleek gloss exterior and intuitive design combine for comfortable palm-held use, with one touch LED power meter and built-in LED flashlight.
  • LG Grade A cells and premium chips ensure reliability and safety, supplying 500+ recharge cycles over a lifetime. Use a 2 amp adapter (not included) and the included Micro USB cable for fastest charging (6.5 hours).
  • Package contents: Anker® 2nd Generation Astro E4 External Battery, Micro USB cable, travel pouch, welcome guide, 18-month hassle-free warranty.
6 new from $29.99

Special Offers and Product Promotions

Color: Black 13000mAh
  • Get a $75 Amazon.com Gift Card: Get the Discover it Card and get a $75.00 Amazon.com Gift Card after your first purchase. Learn more.

Frequently Bought Together

Anker® 2nd Gen Astro E4 13000mAh External Battery Portable Dual USB Charger Power Bank. PowerIQ™ Broad Compatibility, Fast Charging, High Capacity, Ultra Compact. For iPhone 6 5S 5C 5 4S, iPad Air mini, Galaxy S5 S4 S3, Note 3 4, Tab 4 3 2 Pro, Nexus, HTC One, One 2 (M8), LG G3, Nexus, MOTO X and More (Black). + Anker® 24W Dual-Port Rapid USB Car Charger with PowerIQ™ Technology for iPhone 6 plus 5s 5c 5; iPad Air, mini; Galaxy S5 S4; Note 3 2; the new HTC One (M8) and More (Black) + Anker® 40W 5-Port Family-Sized Desktop USB Charger with PowerIQTM Technology for iPhone 6 5s 5c 5; iPad Air mini; Galaxy S5 S4; Note 3 2; the new HTC One (M8); Nexus and More (Black)
Price for all three: $65.97

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Technical Details

Color: Black 13000mAh
  • Size (LWH): 5.79 inches, 2.44 inches, 0.87 inches
  • Weight: 10.4 ounces
  See more technical details

Product Details

Color: Black 13000mAh
  • Product Dimensions: 5.8 x 2.4 x 0.9 inches ; 10.4 ounces
  • Shipping Weight: 15.5 ounces (View shipping rates and policies)
  • ASIN: B00BQ5KHJW
  • Item model number: AK-79AN13K2-BA
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (1,730 customer reviews)
  • Amazon Best Sellers Rank:
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Product Description

Color: Black 13000mAh

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 E4 External Battery
Supersized power in the palm of your hand.

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.

Huge Capacity
Enough power to keep you going for days. Charge an iPhone 5s almost six times, a Galaxy S5 over three times or an iPad Air once.

Slimmer, Sleeker
The new E4 weighs under a pound and rests nicely in your palm. Press the button to check your power level or hold to activate the flashlight.

Superior Quality
We use only premium LG battery cells, together with the most advanced materials and cutting-edge technology, to ensure complete safety.

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 tablets and some GPS and Bluetooth devices.


Customer Questions & Answers

Customer Reviews

Works really well, charges my phone fast several times.
carly poesch
I now can use my 'phone all day without worrying when the battery is going to give up the ghost and where the nearest outlet is going to appear.
Bethann Smith
I was able to charge my iPhone at least 4 times and iPad one time without recharging the Battery.
hmandi

Most Helpful Customer Reviews

283 of 302 people found the following review helpful By Dan D on May 24, 2013
Color Name: Black 13000mAh
Length: 4:22 Mins
(Updated for the 2nd gen, 2014 model)
Frankly, I wouldn't have thought to buy this for myself. I would have thought, "I can manage... I HAVE managed without this portable power plant of a battery so far..."
And I have, for years, managed.
But I received the E4 as a review unit (see disclosure below), and just threw it in my bag with my things when I went out.
And once you realize you've got such in incredible reservoir of power everywhere with you, well, let's just say your daily behavior that was previously subconscious to you... changes.

THE "SO WHAT":
If you feel you're making too many compromises for the sake of battery life (airplane mode, lowering the brightness, etc.), get yourself an external battery. Throw it in your bag, and forget about finding outlets in public spaces anymore.
Even if that doesn't happen for you often, it's perfect to take along on trips (use it for rechargeable camera batteries!), to the airport... you get the idea.

LOOKS
- Glossy black finish, with glossy charcoal for the front and back
- Sturdy/solid (read: not flimsy-feeling, almost seamless) plastic enclosure.
- Great propotions; fits in the hand well and the narrow shape tucks in bags well.
- Comes with a nylon mesh drawstring pouch that fits it perfectly.

==BENEFITS==

No need for outlets or long cables.
I think what surprised me the most was that I was finding it useful where I never would have guessed, because it never would have dawned on me. For example, I wanted to show my friend some videos on my iPad at his place, while we wait for another friend to arrive.
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148 of 168 people found the following review helpful By Joseph Siu on May 9, 2013
Color Name: Black 13000mAh
UPDATED REVIEW: Anker 2nd Gen Astro E4 13000mAh Battery

Anker sent me the 2nd Gen Astro E4 battery to review as the original review was getting a bit dated. In summary, the 2nd Gen Astro E4 definitely improved on a few items that were problematic with original version. Even if you are not upgrading from the 1st Gen, I believe the improvements are still worth considering compared to other batteries on the market. Improvements compared to 1st Gen Astro E4:

- Slimmer (But Longer) Body: While the 1st Gen Astro E4 was wide and shaped like a portable hard-drive, the 2nd Gen version is shaped like a flat glasses case (or a fancy pen case). This shape is much easier to slip into a front/rear pants pocket (albeit a loose fitting pair of pants). Both version weigh about the same.

- Increased Efficiency to 86% (11200mAh Actual): As stated in the original review, no batteries ever hit their capacity but this one came fairly close. This updated version hit 11200mAh while the original version only reached 9200mAh. I was able to charge my Nexus 5 phone fully about 5 times or my Nexus 7 tablet about 3 times. This will be my go-to battery for extended trips away from an outlet. For those of you using Apple's latest iPad Air, this will charge it fully about 1.2 times.

- 3A Maximum Output: With the new PowerIQ technology, either of the two USB ports can now charge to a total maximum of 3A. There is no longer a need to remember which port is the higher output port. Anker also increased the maximum to 3A for newer devices that support this amperage, which is a nice upgrade from the 2A of the 1st Gen.
Read more ›
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63 of 70 people found the following review helpful By Steven Steele on June 22, 2013
Color Name: Black 13000mAh Verified Purchase
So far it works as described. Easy to charge and has all the adapters to charge my toys. The one really bad flaw is an on/off button that is raised above the case. This means it tends to get turned on accidentally in a briefcase or suitcase. Anyone that travels frequently knows that on/off switches need to be sunken in the case or protected by a raised bevel.

UPDATE --->> I had to come back and give this device a fifth star, as much for the Customer Service as anything else. I have used it several times and it works great. In addition to that, the manufacturer has emailed me and Customer Service called me last night and offered to exchange this for the Anker 14400 which apparently has a more flush button. I declined because I really like the way this one charges but I was very impressed. They really seemed like they were not going to rest until I was completely satisfied. 5 stars for attitude!
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159 of 196 people found the following review helpful By Robert D. Banks on July 7, 2013
Color Name: Black 13000mAh Verified Purchase
Charger will not charge. Charger just stopped functioning after 3weeks. Very disappointed in the lack of dependability and quality. Cost of return to high for value of charger.

I am compelled to amend my above review of this product based on very recent experience. I am motivated to so after a very pleasant and productive response from customer service of the Anker Company. Obviously they actually read my product review and reached out to me in a very timely manner. They listened to me and made arrangements to send me another charger immediately while apologizing for my inconvenience. I am more than willing to try this product again based on the company's confidence and support of their product.
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