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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)
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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
| 215 answered questions

Sale: £21.99 & FREE Delivery in the UK. Details
In stock.
Sold by AnkerDirect and Fulfilled by Amazon. Gift-wrap available.
1 used from £19.81
13000mAh (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
  • 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®
Price For Both: £27.97

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Special Offers and Product Promotions

Colour Name: 13000mAh (Black)

Product details

Colour Name: 13000mAh (Black)
  • Product Dimensions: 15 x 6.2 x 2.3 cm ; 295 g
  • Boxed-product Weight: 363 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 (1,758 customer reviews)
  • Amazon Bestsellers Rank:

Product Description

Colour Name: 13000mAh (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 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

160 of 171 people found the following review helpful By C M Cotton TOP 100 REVIEWERVINE VOICE on 13 May 2013
Colour Name: 13000mAh (Black)
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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7 of 7 people found the following review helpful By Alin Chitu on 9 Jan. 2015
Colour Name: 13000mAh (Black) Verified Purchase
Here's my experience with this product, so far.

I've only used it to it's full capacity ONCE, just to see what it's actually capable of.
The portable charger was fully charged about a week before the test and then left untouched until the actual test.

I used it with a Samsung Galaxy S4, bringing the phone from 5% battery to 100%.
Under these conditions I got 4 full charges from it, with the 5th usage only taking the phone from 5% to 12%.

I am more than pleased with the results. And with a 18-month warranty, I couldn't really ask for more.
This is an amazing product and I strongly recommend it to anyone in need of such a device.
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15 of 16 people found the following review helpful By A. Whiteford TOP 1000 REVIEWER on 6 Feb. 2015
Colour Name: 13000mAh (Black)
Length: 5:00 Mins
The Astro is a rechargeable 13,000mAh battery unit that can then be used to charge a slave device connected to it via USB. Included in the package is the Power Bank, micro USB cable, user manual, and travel pouch.

Because this is billed as MFI certified, it ships with a lightning cable for recent iOS devices which is a nice addition. This is black to match the Astro and well constructed - it certainly compares to the official cable and has no issues with charging or syncing.

The Astro measures in at 15 x 6.2 x 2.3 cm and 295g. It feels sturdy in the hand, in part due to the weight of the internal battery and also thanks to the good construction on offer. The unit does have a smooth all over finish though so be wary of placing this somewhere it may slide.

It features four LEDs on the top to indicate remaining power and a power button on one side to enable the remaining power indicator or to operate the LED torch function which is a handy feature that is creeping into more and more power banks. On the end it has two full sized USB ports as well as a central micro USB port for recharging which sits just above the LED torch. It takes around 6.5 hours to fully recharge the unit from empty using a 2A charger. There is no supplied charger but the included cable or indeed any other micro USB cable can be used in connection with any USB source.

From a full charge, 13,000 mAh of portable power is on offer. To put this in an IOS perspective, an iPhone 6 rated @ 1,810 mAh could be fully charged around 7 times. An iPad mini @ 4,490 mAh could be charged almost three times while a full sized iPad Air 2 @ 7,340 mAh could be charged 1.7 times.
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2 of 2 people found the following review helpful By Carlos Santos on 17 Feb. 2015
Colour Name: 13000mAh (Black) Verified Purchase
I bought this power bank to charge both my LG G2 and my Nexus 9. It works great, charges the devices pretty fast - I believe it charges my G2 even faster than the AC adapter. The only downside I could mention is that it does not have a 'real' 13000mAh output amperage. My G2 has a 3000mAh battery and the N9's capacity is 6700mAh . Together they shoud drain 9700mAh out of the 13000mAh of the power bank, and it should still be good for another G2 charge. However I can only manage to charge my G2 one time, and my N9 to about 80% before the power bank dies on me.
This is somehow explained on Anker's website, on the FAQ's:
"The efficiency of this battery is around 70%-80%. The internal circuit board is 92% efficient, accounting for power lost through circuit heat and voltage conversion, which is up to 5% above the industry average. Energy is also lost within the charging cable and the device being charged (approximately 15-20%). Additionally, the efficiency can be affected by the cable length and the age of the device being charged."
So I guess this is a problem that affects every power bank to some extent.

The build quality is pretty decent - I would love aluminium instead of plastic - and the little pouch provided is just perfect for traveling and prevent nasty scratches to the unit.
Overall, the quality-price relation is one of the best on the market, and I am extremely happy with it.
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