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Anker® 2nd Gen Astro E4 13000mAh External Battery with PowerIQ™ Technology 2-Port 3A Output Portable Charger Power Bank 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
| 125 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.
  • 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 External Battery, 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 External Battery with PowerIQ™ Technology 2-Port 3A Output Portable Charger Power Bank 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) + 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 Both: £24.14

Buy the selected items together


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Product details

  • Product Dimensions: 14.7 x 6.2 x 2.2 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: 4.6 out of 5 stars  See all reviews (994 customer reviews)
  • Amazon Bestsellers Rank:

Product Description

With such massive capacity, in such a compact package, the Anker® Astro E4 is perfect for flights, road trips, or just any time you're away from an outlet.

Enough power to go around.
Marooned? In transit? Forget your OEM adapter? With the Anker® Astro E4, prolong your battery life multiple times, wherever you are. Holding enough power to charge a smartphone 3-6 times (depending on your phone's battery size), keep your gadgets going for days and still have juice left to share.

Strong but never slow.
In addition to capacity, the Anker® Astro E4 sports two concurrent, high-speed ports. So whether you're charging an Apple or Android device, you'll get the most out of your technology. We've also included connective adapters to ensure compatibility with most devices.

Designed around the details.
Just because the E4 packs a punch, doesn't mean it can't look nice. We went with a smooth, ebony finish to keep you traveling in style. Simple, unobtrusive features, such as one-touch status LEDs and a built-in flashlight, give you everything you need out of a battery without sacrificing aesthetics.

For optimal use.
• For simultaneous, max-speed charging of your Astro and other devices, check out Anker's new 25W 5-port wall charger or dual-port 24W car charger.
• Compatible with all Apple and Android smartphones, tablets and other 5V input USB-charged devices. The iPod nano, the Samsung Tab2, Asus tablets (not include the Nexus 7), the LG G2 and some GPS and Bluetooth devices are not supported.
• To ensure complete safety and best performance, we strongly recommend using your device's original cable, a third-party certified cable (such as MFI) or our included cable.

Customer Questions & Answers

Customer Reviews

4.6 out of 5 stars

Most Helpful Customer Reviews

110 of 114 people found the following review helpful By C. M. Cotton TOP 100 REVIEWERVINE VOICE on 13 May 2013
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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12 of 12 people found the following review helpful By BCWright on 20 Jun 2014
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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11 of 11 people found the following review helpful By Daniel Wiggins on 1 July 2014
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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5 of 5 people found the following review helpful By Ian Corker on 7 May 2014
Verified Purchase
I had read a number of the reviews before buying the Astro E4 and hoped that I did not have any of the problems experienced by some of the reviewers. I have to say that It has performed superbly and on a recent holiday to Peru, provided plenty of power for my Ipad Air and Camera. It always charged my kit quickly, even with the 1A port and I had no trouble recharging the E4 itself. It worked OK with a travel adapter and the electrics in Peru. It was particularly useful when one of our party had not got the correct travel adapter and I had to lend her the E4, to charge her Iphone a few times. The capacity seemed to be substantial although I did re-charge it at every opportunity, so I never totally flattened the battery. The only issue I had was with the switch, which was very easy to catch when in a bag resulting in the flashlight being turned on a few times. I just had to remember to be careful how I placed in my rucksack. Overall A very useful piece of kit and at a price that I thought good value.
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4 of 4 people found the following review helpful By Charles Lister on 10 Oct 2014
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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