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  • Anker 2nd Gen Astro 6400mAh (2A Output) 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 6400mAh (2A Output) 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
1,223 customer reviews
| 83 answered questions

Price: £49.99
Sale: £18.99 & FREE Delivery in the UK on orders over £20. Details
You Save: £31.00 (62%)
In stock.
Sold by AnkerDirect and Fulfilled by Amazon. Gift-wrap available.
6400mAh 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 2 amps.
  • Uber-High Capacity: Charges the iPad mini once, the Galaxy S5 over one and a half times, the iPhone 5s almost three times and other smartphones multiple times.
  • Superior Quality: Premium LG cells, cutting-edge circuitry and a sturdy drop-tested exterior ensure durability and safety. Recharges in 6 hours with a 1.2 amp adapter (not included) and the included Micro USB cable.
  • What You Get: Anker 2nd Generation Astro Portable Charger External Battery Power Bank, Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service.
£18.99 & 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 6400mAh (2A Output) 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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Total price: £30.14
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Special Offers and Product Promotions

Colour Name: 6400mAh 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: 6400mAh Black
  • Product Dimensions: 9.3 x 4.3 x 2.2 cm ; 122 g
  • Boxed-product Weight: 200 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-79UN53V1-B8P56A
  • ASIN: B005NFOA0S
  • Date first available at Amazon.co.uk: 16 Sept. 2011
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (1,223 customer reviews)
  • Amazon Bestsellers Rank:

Product Description

Colour Name: 6400mAh 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 Portable Charger External Battery Power Bank
The most powerful and portable charger in its category.

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.

Uber-High Capacity
Packed with power, charge an iPhone 5s three times, a large capacity phone like the Galaxy S5 over one and a half times or an iPad mini once.

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

Ultra Compact
As small as a candy bar. Now upgraded with higher density cells and efficiency 10% above most other brands to give you 6% more power.

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.


Customer Questions & Answers

Customer Reviews

4.6 out of 5 stars

Most Helpful Customer Reviews

192 of 200 people found the following review helpful By Tomcatuk on 4 Aug. 2013
Colour Name: 6400mAh Black Verified Purchase
Only just got this, mainly to charge up a gopro battery, but thought I would charge up my iphone5 as was about to go out and no time to plug into mains charger, as it does not come supplied with the latest type (lighting connector) I took the iphone lead with me and plugged it in... great its charging... two minutes later the charging stops and you get the yellow warning triangle displaying on the iphone5 that this is not a compatible charger and so will not charge your iphone5 despite the product claiming to charge it.

Update: After writing this review I was contacted by Anker who were most concerned about this not working with the iPhone 5, to cut a long story short this product now gets FIVE stars and the same for the Anker support via email, there is sometimes a slight delay in getting a reply due to the times zone but it was sorted out and Anker sent me a replacement unit via Amazon.
I plugged it in to a half charged unit and no more warning from the iphone, charged up the iphone which was on 67% to 100% in no time at all, can not recommend this company and support highly enough, if only all support was like this... they also told me no need to return the old unit so keeping that as it works on the Gopro hero 3.
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8 of 8 people found the following review helpful By Cobra on 8 Sept. 2014
Colour Name: 6400mAh Black Verified Purchase
We are all carrying more and more devices with us and batteries do seem to run out at the worst of moments. Some companies even charge massively for backup batteries and even then those batteries will only work with the device they are brought for.

I have found the Anker Astro 5600mAh power pack to be a life safer of many occasions. I do not find it heavy and it's nicely sized so i keep it in my pocket when i go out. Often on a busy day my iPhone will run out of battery, or my camcorder when i really want to film something. This is not a problem anymore since i am able to charge on the go.

Surprisingly the battery charges devices very quickly, but once the Anker battery needs recharging itself it can take a while. I suggest charging the Anker battery over night, that way you are guaranteed full charge for the day ahead. You can use this battery to supply power to anything that uses USB to charge, simply by plugging the usb cable into the battery, and then connecting your device to the same cable. Pressing a button then activates the charging process.

You also have use of a torch that's built into the device. This is very useful if you even need a torch on your journeys. I highly recommend this product to pretty much anyone. You never know when you'll need more power while outside and this gives it to you.
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1 of 1 people found the following review helpful By MARK C SAUNDERS on 12 April 2015
Colour Name: 6400mAh Black Verified Purchase
This Anker 2nd Gen Astro 6400mAh portable external battery charger is a really solid piece of technology. The build standard is robust and it is very compact in size and fits within all my backpack compartments with minimal weight burden (approx 130g with cables). The rubberised finish of case is great and not only provides a bit of luxury but does not attract fingerprints or dirt. It comes with a nice draw string type partly padded nylon carry bag that provides additional protection. The device came with 80% charge and took 30 to 40 mins to fully charge with a 2A USB wall charger (the device does not come with a wall charger but come with a micro USB charging cable that can be plugged into the USB port of a laptop/desktop or any other USB wall chargers that come with phones or tablets. Alternatively USB wall plugs can be bought on Amazon or most other places for under £10. With a standard Iphone 1A USB wall charger (or when charging from a laptop USB port) you can double the charge time but with chargers that typically come with new Ipads (2 to 2.4A) you will get maximum speed charging. The device is smart and will not allow overcharging if more than a 2A charger is used.
Have charged my Iphone 6 twice now with the Anker portable battery and still have 30% charge. I will probably get another charge or so for my Iphone 6. I also used the battery to test charge an Ipad Air and got 60% charge on the Ipad after fully draining the Anker. This seems about right since the Ipad Air has an 8600mAh battery. The device shows, in 10% increments, the charge status with a circular series of LEDs (this is activated by lightly shaking the device – it may have an accelerometer on board to sense the motion).
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2 of 2 people found the following review helpful By Mr D Moudatsos on 13 Mar. 2015
Colour Name: 6400mAh Green Verified Purchase
I have purchased that item just a few weeks ago. It does do anything it says. The only thing that I find a little annoying is that while inside it pouch sometimes it does shows thebattery life and carries on to work even if its not connected to a device. It will be perfect if it had an on off switch instead. Probably by the side where you connect to mains in order to reserve the battery instead of allowing it work when you do not want it to. If it had that it will have been a perfect product. I bought many items from anker and they are all excellent quality and great customer service and therefore I highly recommend their products.
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29 of 33 people found the following review helpful By Michael P on 16 Jan. 2013
Colour Name: 6400mAh Black Verified Purchase
Very good product, quality made and clear instructions. Useful additional to carry around to boost the charge on my two mobile phones as well as my Kindle Fire HD when on the go.
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