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  • Anker® 2nd Gen Astro 6400mAh External Battery Pack with PowerIQ TM Technology 2A Output Portable Charger Power Bank for USB Devices (Black)
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Anker® 2nd Gen Astro 6400mAh External Battery Pack with PowerIQ TM Technology 2A Output Portable Charger Power Bank for USB Devices (Black)

by Anker
| 309 answered questions

Price: $59.99
Sale: $25.99 & FREE Shipping on orders over $35. Details
You Save: $34.00 (57%)
In Stock.
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 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 External Battery, Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service.
5 new from $25.99 1 used from $70.56

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Color: Black
  • Get a $75 Amazon.com Gift Card: Get the Discover it Card and get a $75.00 Amazon.com Gift Card after your first purchase. Learn more.

Frequently Bought Together

Anker® 2nd Gen Astro 6400mAh External Battery Pack with PowerIQ TM Technology 2A Output Portable Charger Power Bank for USB Devices (Black) + Anker® 2nd Gen Astro Mini 3200mAh Ultra-Compact Portable Charger Lipstick-Sized External Battery Power Bank with PowerIQ™ Technology for iPhone 6 5s 5c 5 4S, Galaxy S5 S4 S3 Note 3, 4, Nexus 4, HTC One M8, Nokia Lumia 520, 1020 and Other Smartphones (Black) + Anker® 2nd Gen Astro E4 13000mAh External Battery Portable Dual USB Charger Power Bank. PowerIQ™ Broad Compatibility, Fast Charging, High Capacity, Ultra Compact. For iPhone 6 5S 5C 5 4S, iPad Air mini, Galaxy S5 S4 S3, Note 3 4, Tab 4 3 2 Pro, Nexus, HTC One, One 2 (M8), LG G3, Nexus, MOTO X and More (Black).
Price for all three: $75.97

Buy the selected items together


Technical Details

Color: Black
  • Size (LWH): 3.78 inches, 0.98 inches, 1.81 inches
  • Weight: 4.8 ounces
  • Battery Type: Lithium Polymer
  See more technical details

Product Details

Color: Black
  • Product Dimensions: 3.8 x 1 x 1.8 inches ; 4.8 ounces
  • Shipping Weight: 7.8 ounces (View shipping rates and policies)
  • Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • ASIN: B00EF1OGOG
  • Item model number: AK-79AN7902-B2A
  • Batteries 2 Lithium ion batteries required. (included)
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (1,931 customer reviews)
  • Amazon Best Sellers Rank: #354 in Cell Phones & Accessories (See Top 100 in Cell Phones & Accessories)
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Product Description

Astro Mini 2nd Gen Astro 2nd Gen Astro E4 24W Dual-Port Car Charger 36W 4-Port Wall Charger 40W 5-Port Desktop Charger
Average Review Rating 4.5 / 5 Stars 4.3 / 5 Stars 4.6 / 5 Stars 4.4 / 5 Stars 4.6 / 5 Stars 4.6 / 5 Stars
Color Selection Black, Silver, Pink, Blue, Gold Black, White, Blue, Green, Yellow Black, White Black, White Black, White Black, White
Battery Capacity 3200 mAh 6400 mAh 13000 mAh
# of iPhone 5s charges 1.4 2.9 5.8
# of iPad Air charges 0.3 0.5 1.0
# of USB Charging Ports 1 1 2 2 4 5
PowerIQ Technology
Max Charging Speed 1 Amp 2 Amps 3 Amps 4.8 Amps 7.2 Amps 8 Amps
Size 3.5 × 0.9 × 0.9in (lipstick) 3.7 x 1.8 x 1.0 in (candybar) 5.9 × 2.5 × 0.9in (glasses case) 2.9 x 1.0 x 0.9in (thumb) 3.3 x 2.5 x 1.0in (brownie) 3.6 x 2.3 x 1.0in (deck of cards)
Weight 2.7oz (egg) 4.8oz (baseball) 10.4oz (iPad mini) 1.1oz (10 pennies) 4.8oz (baseball) 4.6oz (baseball)

Customer Questions & Answers

Customer Reviews

Great product - so far it works as promised and holds a charge for a long time.
CS Mom
I am always on my phone and always needs to be charged but some places I go doesn't have a place where I can charge my phone up so this is very handy.
Be3tyBoop
It is light weight and small enough to fit into your handbag, carrying bag or pocket.
Stephanie Simms

Most Helpful Customer Reviews

112 of 112 people found the following review helpful By Wes G. on September 9, 2014
Color Name: Black
I never have to worry about leaving my cables at home now because I Found This Portable Charger, and it has them built in. It charges my phone fully almost 2 full times. Great for all my needs. The Anker one is great, but if I don't have cables, I can't charge my phone at all.

This is just a really good portable charger. One big flaw for me with a lot of these things though is not having a built-in cable, because I NEVER remember my cables. Basically, it defeats the point of having this when I do. Lol
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493 of 515 people found the following review helpful By jjceo #1 HALL OF FAMETOP 10 REVIEWER on October 22, 2013
Color Name: Black
Length: 6:10 Mins
This battery pack is beautifully packaged with a black rubberized coated case. The black rubber coating is slightly textured so it is not a fingerprint magnet and it improves the looks of the case and your grip. It is a powerful battery pack rated at 6000 mAh of capacity and the test results were spectacular! I put together a video of the unit and the test results for your review.

The battery weighs in at 4 3/4 ounces. The battery pack has one USB output port that outputs 5 VDC at 2 Amps. It is a smart USB port whose output current will never exceed the capacity of your smart device's current charging capability. The battery is extremely energy efficient and its performance is 10 percent or more above the standard performance of a normal designed external battery. This is because of the superior quality of the battery cells used and the advanced control circuitry within the battery.

During the testing the temperature of the battery pack never even exceeded ambient room temperature. To start your device charging you connect it with the proper cable and the battery pack charging starts automatically. To check the battery pack charge status you have to shake the battery and the LED ring lights up.

This product is outstanding and I rate it at 5 stars. If you are a business person or a student and have to depend on your tablet or smart phone for long periods of time without the ability to get to an AC power source then this is a good battery to own. This is good for those who travel a lot or camp out. Now you can watch your movies or listen to your music on those long airline flights. While this battery pack can put some charge into your tablets it is more ideal for use in recharging your smart phone.
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121 of 136 people found the following review helpful By Twister TOP 1000 REVIEWER on October 17, 2013
Color Name: Black
After rolling out new 2nd generation versions of Astro 3 (3 outputs) and Astro 2 (2 outputs), now is a turn for Astro with a single charging output. While Astro 3 was very impressive with three outputs and 12000 mAh capacity, it was a relatively large and heavy device, which is expected. Astro 2 shrunk it down to 2 outputs and 9000 mAh capacity with a more pocket friendly footprint. Here with single output Astro and 6000 mAh capacity the size was reduced down to an awesome compact size which you can store even inside of a very small purse. But don't let the small size fool you - you still get all new 2nd gen design with every bell'n'whistle of Astro 2 and 3. So let's take a closer look.

Continuing with their environmentally friendly packaging, battery came inside of a neatly packaged box which contained a battery itself, a manual (always very detailed), and accessory box with usb to micro-usb cable and a mesh draw-string storage bag for a battery and a cable. Now let me tell you about the size of this battery - its is SMALL!!! Weighting around 130g and with a size of 90mm by 45mm and thickness of 25mm - it will easily fit in a palm of your hand where you can make a fist hiding it inside. That's how compact it is. With a new rounded design and smooth edges, the hard plastic shell is lined with a soft touch rubbery finish. You get one micro-usb battery charging port (1A speed to charge the battery itself) and one full usb smart output port for any Android or Apple device. The output supports a maximum charging speed of up to 2A. In my quick test with OEM usb cable I confirmed a charging speed of 1.5A using my Note 2. The speed will obviously vary depending on the cable you use, so keep that in mind and use usb cables with thicker wires.
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28 of 34 people found the following review helpful By Matthew Anderson on November 7, 2013
Color Name: Black Verified Purchase
This batter pack worked great for a few weeks. Then one day it wouldn't charge again, and the light doesn't come on.
I have used other Anker products in the past and they have been great. Not sure what's up with this one.
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65 of 84 people found the following review helpful By Arnold on November 11, 2013
Color Name: Black Verified Purchase
I bought this battery pack from prime with two day shipping. Th battery pack looks gorgeous and it feels nice and rigid. doesn't feel cheap at all. I bought this for my Samsung GS4 which has a 2600 mA battery. having 6000 mA on the battery, I can charge my phone from around 5 % to 100% using around 60 % of the battery pack. The shake to check works really well however, I use this battery pack a lot on the go around college and I noticed that every time I walk the battery will detect that it is shaken and it will light up every time I walk. I'm not sure how much energy is consumed every time it lights up but it didn't seem like it consume too much. I would like to see a physical button instead of a shake because it annoys me to know that it lights up every time I walk.

After a week of usage, the usb cable's plastic housing came off. It can still charge normally, but it was a let down to know that the quality of the cable is not that good. Amazon can't replace the item but can return it. Since it still works I didn't bother doing so because I use this every now and then.

Overall it is a great battery for the money. If you're looking for a nice battery pack and the shake thing doesn't bother you. This battery is for you.
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