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Anker® 2nd Gen Astro E4 13000mAh 2-Port (3A Output) Fast Portable Charger External Battery Power Bank with PowerIQ™ Technology for iPhone 6 Plus 5S 5C 5 4S, iPad Air 2 Mini 3, Samsung Galaxy S5 S4 Note Tab, Nexus, HTC, Motorola, Nokia, PS Vita, Gopro, more Phones and Tablets (Black)

by Anker
| 142 answered questions

Price: £69.99
Sale: £19.99 & FREE Delivery in the UK. Details
You Save: £50.00 (71%)
In stock.
Sold by AnkerDirect and Fulfilled by Amazon. Gift-wrap available.
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13000mAh
  • 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
  • Huge Capacity: Charges the iPad Air once, the Galaxy S5 over three times, the iPhone 5s almost six times and other smartphones multiple times. Recharges in 6.5 hours with a 2 amp adapter (not included) and the included Micro USB cable.
  • Superior Quality: Premium LG cells, cutting-edge circuitry and a sturdy gloss exterior ensure reliability and safety. To activate the LED flashlight, hold or double click the power meter button.
  • What You Get: Anker® 2nd Generation Astro E4 Portable Charger External Battery Power Bank, Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service.

Frequently Bought Together

Anker® 2nd Gen Astro E4 13000mAh 2-Port (3A Output) Fast Portable Charger  External Battery Power Bank with PowerIQ™ Technology for iPhone 6 Plus 5S 5C 5 4S, iPad Air 2 Mini 3, Samsung Galaxy S5 S4 Note Tab, Nexus, HTC, Motorola, Nokia, PS Vita, Gopro, more Phones and Tablets (Black) + Mains charger for Anker 2nd Gen Astro E3 10000mAh / 2nd Gen Astro E4 13000mAh / Astro E5 15000mAh / Astro E6 Ultra-High Capacity 20800mAh Portable Power Bank - NO PC REQUIRED - AAA Product® + QUMOX Sync Multi Charge USB DATA Cable for iPhone 4 4s 5 5s 6 6 plus iPad 2 3 iPad Air Mini Galaxy S3 S4 Note 2 Nexus 5 7 Micro (black)
Price For All Three: £30.26

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Size Name: 13000mAh

Product details

Size Name: 13000mAh
  • Product Dimensions: 15 x 6.2 x 2.3 cm ; 295 g
  • Boxed-product Weight: 440 g
  • Delivery Destinations: Visit the Delivery Destinations Help page to see where this item can be delivered.
    Find out more about our Delivery Rates and Returns Policy
  • Item model number: AK-79AN13K2-BA
  • ASIN: B00BQ5KHJW
  • Date first available at Amazon.co.uk: 10 Mar 2014
  • Average Customer Review: 4.7 out of 5 stars  See all reviews (1,134 customer reviews)
  • Amazon Bestsellers Rank:

Product Description

Size Name: 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 Portable Charger External Battery Power Bank
Supersized power in the palm of your hand.

PowerIQTM Detects your device. Delivers the fastest charge.
Exclusive to Anker, PowerIQTM 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

Most Helpful Customer Reviews

123 of 129 people found the following review helpful By C. M. Cotton TOP 100 REVIEWERVINE VOICE on 13 May 2013
Size Name: 13000mAh
Anker gave me this product free to test so that I can give my honest feedback.

I have had a number of Anker products to review recently and I have rated them all as 5 star products. This item is a brilliant idea, it is in essence a rechargeable battery that charges other items, such as my Android phone. The product is quite small and relatively lightweight given the capacity of its charge. It is made from quality black plastic, with a chrome casing around the outside, which makes it look and feel superb. There is a chrome button which turns the unit on and off and also switches the internal LED flash-light on and off. Above the button are 4 blue LED lights which indicate the amount of charge left in the unit. There are 3 outlets, 2 USB ports and one Android/Phone charging port. To use you simply charge the unit using a USB port and then use the included cable to charge the item you want to charge such as a phone. On my test, I charged my Sony Xperia phone from empty to 100% charge in 1 hour 20 minutes, so equating to almost the same charge rate as plugging it into a socket. This charge also hardly dissipated the internal battery of the unit. I think the units' battery once fully charged, will allow 7 full charges of my mobile phone, giving the unit an enormous capacity.

I am very impressed by the unit and how it looks and the quality of its construction. As always the item is backed by Anker's 18 month warranty and helpline. For the first time with an Anker product I have two minor concerns. Firstly the instruction book is far to small and was difficult to read. Secondly the On/Off switch can be turned on too easily, resulting in the LED torch illuminating and so discharging the battery.
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9 of 9 people found the following review helpful By Charles Lister on 10 Oct 2014
Size Name: 13000mAh Verified Purchase
A great product, particularly if you play Ingress. It will charge your phone faster than whatever you are running can drain it, and keep it running for many hours of continuous use. Charging will start automatically as soon as your phone is connected and it will go to sleep when nothing is connected. Despite what others have said I have never had any problems with accidentally pushing the button and even if it is pushed it will go back to sleep if nothing further is done as it takes two pushes to activate the torch. A matt finish might have been better but as it comes with its own carry bag (which is mesh and keeps it cool) this hardly matters as you can leave it in the bag even when in use. There are cheaper batteries out there and ones with greater capacity but this one seems to strike a perfect balance of safety features, functionality, capacity, size/weight and price.
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Size Name: 13000mAh Verified Purchase
I bought this to run a dash cam from - unfortunately although all the initial reviews and online manual all said that passthrough charging is supported it's incorrect. The old devices supported it but the 2nd Gen Astro E4 does NOT support it.

As soon as you connect power to the input the device will shutdown the outputs and they remain unresponsive until power is disconnected from the input.

I only bought this device after reading the online manual to confirm that passthrough was supported and now after having bought it I've found it that the manual and various reviews online are wrong.

Anker also confirmed to me today that the manual was wrong and they've since changed it as passthrough can cause premature failure.

To be fair other than that it seems a stable power bank and I've used it for a day at the horse races but I'm disappointed that it doesn't support passthrough like it was originally sold as supporting.

Test wise when it's fully charged I managed to fully charge an iPhone 5S and then run a small A118 dash camera for 22 hours.
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14 of 15 people found the following review helpful By BCWright on 20 Jun 2014
Size Name: 13000mAh Verified Purchase
This is an excellent Power Bank that holds multiple charges for my devices!

I was a bit sceptical when buying this product as there are multiple reviewers saying the button is a little to easy to press and this could result in the torch turning on and draining the battery. I have not experienced this however have been keeping the charger in a small pocket in my bag for good measure.

The capacity of this device is massive! I can be away from power for several days and this charger will still have juice, despite charging my nexus 5 multiple times. The pouch that the charger comes with is a nice accessory that has just enough room for a usb cable to be stored in.

My only negative is that its very glossy and prone to fingerprints but that really doesnt affect the charger itself so I won't deduct any stars for it.

All in all, a great charger and essential for travelling!
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12 of 13 people found the following review helpful By Daniel Wiggins on 1 July 2014
Size Name: 13000mAh
Bought for the festival season and it packed enough power to keep mine and my girlfriend's mobile phones charged for the whole of Glastonbury! I'd say it can change a phone from flat to full around six times.

I've read some reviews about issues with charging this battery. It does take a long time to charge (around 10 hours) and that's using the 2.1A iPad 3 adapter. I'd imagine a few people have problems with adapters that aren't putting out enough current.

The battery is fairly heavy and big, not really something to carry in your pocket all day, but did go in my girlfriends handbag...

The button on the battery also operates the torch, again as a few reviews have said this can accidentally be operated, even though it is slightly indented. It requires a double-press to switch on and off. Just keep it away from protruding objects in your bag and I'm sure you'll be fine.
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