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Anker® 2nd Gen Astro E3 Dual-Port Ultra Compact External Battery Portable USB Charger Power Bank - PowerIQTM Broad Compatibility, Fast Charging, High Capacity - For iPhone 5S 5C 5 4S, iPad Air mini, Galaxy S5 S4 S3, Note 3 2, Tab 4 3 2 Pro, Nexus, HTC One, One 2 (M8), Motorola Droid, Moto X, PS Vita, Gopro, and other USB-charged devices

by Anker
4.6 out of 5 stars  See all reviews (1,176 customer reviews) More about this product
Price: £49.99
Sale: £21.99 & FREE Delivery in the UK. Details
You Save: £28.00 (56%)
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In stock.
Sold by AnkerDirect and Fulfilled by Amazon. Gift-wrap available.
Want it tomorrow, 23 Aug.? Choose Express delivery at checkout. Details

Technical Details

  • PowerIQ™ technology maximizes compatibility with Android, Apple or other devices by enabling charge speeds of up to 3 amps overall or 3 amps per port.
  • 10000 mAh of capacity charges an iPhones four+ times or large-capacity phones like the Galaxy S4 more than twice.
  • At only 0.59in thick, it's ideal for grab-n-go use. 4 LEDs display just how much juice you've got left. Reliable lithium polymer core ensures quality and supplies 500+ lifetime charge cycles.
  • Input: 5V / 2A; Use a 2A adapter (not included) for fastest charge times (6 hours).
  • Package contents: Anker® Astro E3 External Battery, accessories, user manual, 18-month hassle-free warranty. (Apple adapters, 30 pin and lightning, Samsung 30-pin adapter not included)

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Frequently Bought Together

Anker® 2nd Gen Astro E3 Dual-Port Ultra Compact External Battery Portable USB Charger Power Bank - PowerIQTM Broad Compatibility, Fast Charging, High Capacity - For iPhone 5S 5C 5 4S, iPad Air mini, Galaxy S5 S4 S3, Note 3 2, Tab 4 3 2 Pro, Nexus, HTC One, One 2 (M8), Motorola Droid, Moto X, PS Vita, Gopro, and other USB-charged devices + Anker® 40W 5-Port Family-Sized Desktop USB Wall Charger with PowerIQ™ Technology for iPhone 5S, 5C, 5, 4S, iPad Air, Mini, Galaxy S5, S4, S3, Note 3, 3, Tab 4, 3, 2, Pro, HTC One (M8), Google Nexus 4, 5, 7, 10, External Battery, PS Vita, Gopro and more (Black)
Price For Both: £41.98

Buy the selected items together


Product details

  • Product Dimensions: 13.7 x 6.7 x 1.7 cm ; 231 g
  • Boxed-product Weight: 336 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-79AN7917-BA
  • ASIN: B0063AAIRG
  • Date first available at Amazon.co.uk: 3 April 2012
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (1,176 customer reviews)
  • Amazon Bestsellers Rank:

Product Description

The next generation Astro E3. Refined to power the mobile, connected life even better.

PowerIQ™: Compatibility maximized.
Not all charging ports are created equal. Standard ports only communicate effectively with particular devices, like Apple OR Android, often limiting their recharge rate. But with PowerIQ™ technology, each port intelligently identifies your device to speak its unique charging language. So plug in any brand or model and enjoy compatibility that doesn't limit your charging speed.

Grab-n-go ready.

With the importance of staying connected ever increasing, eliminate low-battery fear with the grab-n-go Astro E3. Power your iPhone 4+ times, a large-capacity phone like the Galaxy S4 more than twice, or a tablet once (depending on your model).

Simple, reliable power.
Designed to be functional and efficient - nothing else. At 0.59in thin, the E3 comes ready to serve as an unobtrusive, lightweight solution to your daily power needs. And, increasing the new Astro E3's recharge rate from 1.5A to 2A, we've reduced the recharge time 25% to just 6 hours (with a 2A adapter).

For optimal use.
• Compatible with all Apple and Android smartphones, tablets (including the Nexus 7) and other USB-charged devices. The iPod nano, Asus tablets, 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.
• The included Micro USB cable is compatible with the Samsung Galaxy S5, Note 3 and other Micro USB 3.0 devices. To connect, insert the cable's Micro USB tip into the larger of the two connection ports on your device.


Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews
243 of 259 people found the following review helpful
4.0 out of 5 stars Never run out of battery again 18 Sep 2012
Size Name:10000mAh External Battery|Verified Purchase
Anker® Astro3 10000mAh Dual 2A/5V USB Output & 9V/12V DC Output External Battery Pack Charger.

Edit Please note this is for the older version, NOT for the new E version (despite what the Amazon page says). Also I corrected my maths, as pointed out by Ms L Atkins. Thanks for that, I missed out some brackets!

So how many times can you charge your phone? This battery is 70% efficient (nothing is ever 100%). According to their website (ianker.com) use this formula.

Capacity of the External Battery * 70% / Capacity of the Mobile Phone

So for my phone, HTC One V (1500 mAh battery) - (10,000 * 0.7) / 1500 = 4.66, or 4 full charges from 0% to 100% & 1 more charge from 0% to 66%

In testing I achieved 4 full charges from 0% to 100%, & 1 more charge from 0% to 54% before the Astro 3 was totally flat.

It took 2 1/2 hours to fully charge my phone using the S USB slot. It took 3 hours to fully charge my phone using the I USB slot.
(Using the wall charger that came with my phone, it takes 1 1/2 hours to charge my phone from 0% to 100%)

2 USB slots can charge up to 2A (@5V). USB Slot I is for Apple devices, USB Slot S is for Samsung (read Android) devices. Both slots work for any USB device I have tried that is 5V.
This also has a DC out slot that is switchable between 9V & 12V.

Your device will only draw UP TO the Amps that it is designed for. In other words if your wall charger is 1A 5V, it is ok to use this external battery, your device will only draw 1A. The external battery itself can supply up to 2A depending on your device, just make sure its 5V.

I also tried charging my netbook, an EeePC (1000HE) made by Asus, with an 8400 mAh battery that lasts for around 7 hours.
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3 of 3 people found the following review helpful
4.0 out of 5 stars Super 17 Feb 2014
By prisrob TOP 500 REVIEWER VINE VOICE
Size Name:10000mAh External Battery
ne Accessory)
I have several mobile devices and take two to three with me when I travel my iPhone, iPad, and/orkindle. I try to find outlets at airports to plug them in, but so do the rest of the travelers. Each device's battery has a different length of life, my iPad battery runs out more quickly, followed by my iPhone and then my kindle. By carrying all three, I hoped that using them one by one I would have a mobile device for my East to West Coast travels. Now, we have external battery chargers, and they are a life saver.

This zanier battery pack came well packaged, easy to open and encased in a strong plastic case. The battery has an on/off button and also has auto shut off. A blue LED indicates when the battery is turned on. While you are charging your device the LED is on. This battery pack is a very good size, small, light weight, and can be easily placed in a purse or pocket.

This battery charger is ideal for charging a smartphone to a full charge more quickly than others I have used, and my iPad much more slowly. . My iPhone is an older model, and the battery runs out more quickly. I keep this portable power bank with me fully charged to use when my iPhone needs re-charging. This battery uses Lithium Ion battery technology and carries a 10000mAh capacity. I keep this portable power bank in my purse with the charging cable, so that it is convenient for use at any time. The battery pack is white with a green strip on either end, quite attractive. You must provide your own able to fit your mobile devices. Note: I was provided this product to use and review.

Recommended. prisrob 02-17-14
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3 of 3 people found the following review helpful
Size Name:10000mAh External Battery|Verified Purchase
Looked around for a while to find what I wanted to support my iphone 4's diminishing battery life. Decided on this over a charging case or a small (lipstick sized) power bank, very happy with my choice. This device is charged via an included 'micro B' USB cable and charges your devices from either one or both of the other two USB connections. I haven't run the battery of this device down fully yet but I have fully charged my iphone 4 from it 3 times in one day which used about 60% of it's battery. Charges my iphone very quickly too. I put this device in my back pocket and run a cable to my phone in my front pocket when I need to charge my phone on the go, and that works fine.Looks stylish and well built. Very good price.
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1 of 1 people found the following review helpful
Size Name:10000mAh External Battery|Verified Purchase
About the same size as a galaxy s3, almost twice as heavy but twice as thick - I have been using this as a portable charger for my tab 8.0 tablet and s3 and it's great as I can fully charge my phone and fully charge my tablet before it dies so I can constantly be on Facebook and YouTube whilst bus and train traveling for extensive periods of time where otherwise they would surely die where if k hadn't purchased this brilliant portable charger! My s3 gets 4 and half charges - absolutely essential whilst camping !
It also comes in a snazzy fabric and foam infused pouch which is brilliant for putting the also, additionally given charger cable that is identical to the black samsung galaxy charger cable - this product is high quality inside and out, even the package impressed me for the price!
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1 of 1 people found the following review helpful
Size Name:10000mAh External Battery|Verified Purchase
Great charger - will happily charge Iphone 4-5 times over and my samsung note tablet at least twice. Downsides are - it doesn't come with a 3 pin plug - (apparently not many gadgets do these days) so can only charge it via usb to computer (however have discovered samsung tablet plug is compatible) unless you buy a plug extra. It is also a little on the heavy side. My biggest bug-bear is that it comes with a soft pouch which is fine, but for travelling around this is likely to get battered in my handbag so had to order a harder, portable harddrive type carry case which is a little too big. Anker - please make a proper case this this fab charger!
Overall - for the price an amazing little gadget to keep your other gadgets reliably juiced up.
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