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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 S6 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 S6 S5 S4 Note Tab, Nexus, HTC, Motorola, Nokia, PS Vita, Gopro, more Phones and Tablets (Black)

by Anker
3,082 customer reviews
| 299 answered questions

Price: £69.99
Sale: £16.99 & FREE Delivery in the UK on orders over £20. Details
You Save: £53.00 (76%)
In stock.
Sold by AnkerDirect and Fulfilled by Amazon. Gift-wrap available.
13000mAh (Black)
  • The Anker Advantage: Join the 10 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.
£16.99 & FREE Delivery in the UK on orders over £20. Details In stock. Sold by AnkerDirect and Fulfilled by Amazon. Gift-wrap available.

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 S6 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®
Total price: £22.83
Buy the selected items together

Special Offers and Product Promotions

Colour Name: 13000mAh (Black)
  • Save £20 on Amazon.co.uk with the aqua Classic card. Get an initial credit line of £250-£1,200 and build your credit rating. Representative 32.9% APR (variable). Subject to term and conditions. Learn more.

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
  • Batteries 1 Lithium ion batteries required.
  • Item model number: AK-79AN13K-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 (3,082 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 10 million+ satisfied customers powered by Anker.

2nd Generation Astro E4 Portable Charger External Battery Power Bank
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, Dell Venue 11 Pro, Asus tablets and some GPS and Bluetooth devices.
• Remove film before use.


Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

Colour Name: 13000mAh (Black) Verified Purchase
OVERALL
I was very impressed with this charger. It charged up multiple phones quickly and many times, is well designed and made, and Anker's approach and ethos are very refreshing.

CHARGING
I bought this to take on holiday with me, as we were going to be travelling quite a lot and I wanted something that could keep my phone charged up if I couldn't get to a plug (I did NOT want to lose my music and films 2 hours in to an 18 hour long-haul flight!) This baby was a life-saver. I reckon I could fully charge my phone from absolutely dead almost 4 times before the unit needed charging.

What was more impressive than that was the speed it charged - I could almost see the percents ticking up as I watched! You might think that a phone will charge at the same rate regardless of how it's plugged in, but that isn't so. Sometimes different chargers are lower powered, and sometimes they just don't speak the same language as the device being charged. Anker use something they call PowerIQ to identify the device plugged in and charge it at the optimum rate. Clever stuff. I can safely say that this charged my phone FASTER than the wall charger that the phone came with. I'm considering using it at home as well as travelling!

The best thing about it is its portability. You can plug your phone in, leave them both in your bag for the 20 minutes it takes to transfer at a bus station (when you're too busy trying to work out the timetables/terminals/tickets/toilets to be using it anyway) and your phone is well on it's way to being charged again.

It was useful having 2 USB ports, as both me and my girlfriend could charge at the same time. Plugging 2 phones in does make the charging a bit slower, but not by much.
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22 of 23 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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221 of 238 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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5 of 5 people found the following review helpful By MR C SAVILLE on 17 Mar. 2015
Colour Name: 13000mAh (Black) Verified Purchase
Such a good concept and worked fine the first few times i used it but I must have charged up the Anker Charger around 4 times fully and now the battery doesnt last long at all, iv had it like 2 months or so, i charge it up to full and plug my phone in and within half an hour the battery remaining goes from 4 lights to 2 lights, then 1 light within another 20 mins and then it starts to flash like 10 minutes later.

Iv brought the Anker to work with me today and it started out fully charged, plugged my phone in to it which was on 49% battery. My phone has now got to 84% and the Anker is on 1 flashing light already! what a joke! It is supposed to charge my Iphone4 upto 4 times from a full charge and now it can only manage a 35% charge of my phone.

I thought this was brilliant at first and would be a great saviour to carry around in my bag for them times of need when your phone dies but it has quickly gone down hill and is now a total liability.
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