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  • Anker 2nd Gen Astro 6400mAh Portable Charger ?External Battery Power Bank with PowerIQ Technology for iPhone 6 5s 5c; iPad Air 2 mini 3; Galaxy S5 S4; Note 4 3; Nexus 6; LG and More (Black)
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Anker 2nd Gen Astro 6400mAh Portable Charger ?External Battery Power Bank with PowerIQ Technology for iPhone 6 5s 5c; iPad Air 2 mini 3; Galaxy S5 S4; Note 4 3; Nexus 6; LG and More (Black)

by Anker
| 409 answered questions

Price: $59.99
Sale: $21.99 & FREE Shipping on orders over $35. Details
You Save: $38.00 (63%)
In Stock.
Sold by AnkerDirect and Fulfilled by Amazon. Gift-wrap available.
Black
Standard Packaging
  • 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.

High-Quality External Battery Packs from AmazonBasics
Safely charge your smartphone or tablet with a portable battery pack from AmazonBasics with power overload protection. Shop now.
$21.99 & FREE Shipping on orders over $35. Details In Stock. Sold by AnkerDirect and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

Anker 2nd Gen Astro 6400mAh Portable Charger ?External Battery Power Bank with PowerIQ Technology for iPhone 6 5s 5c; iPad Air 2 mini 3; Galaxy S5 S4; Note 4 3; Nexus 6; LG and More (Black) + Anker 2nd Gen Astro Mini 3200mAh Lipstick-Sized 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 and More (Black) + [Apple MFi Certified] Anker® Lightning to USB Cable 3ft / 0.9m with Ultra-Compact Connector Head for iPhone 6 6Plus 5s 5c 5, iPad Air mini mini2, iPad 4th gen, iPod touch 5th gen, and iPod nano 7th gen (White)
Price for all three: $42.97

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Color: Black | Product Packaging: Standard Packaging

Technical Details

Color: Black | Product Packaging: Standard Packaging
  • Size (LWH): 3.78 inches, 0.98 inches, 1.81 inches
  • Weight: 4.8 ounces
  See more technical details

Compare to Similar Items


This item: Anker 2nd Gen Astro 6400mAh Portable Charger ?External Battery Power Bank with PowerIQ Technology for iPhone 6 5s 5c; iPad Air 2 mini 3; Galaxy S5 S4; Note 4 3; Nexus 6; LG and More (Black)
Customer Rating (3420) (579) (1087) (1844)
Price $ 21.99 $ 19.99 $ 29.99 $ 39.99
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By AnkerDirect Amazon.com AnkerDirect AnkerDirect
Color Black Black Black Black
Dimensions 1.81 inches x 3.78 inches x 0.98 inches 0.53 inches x 4.57 inches x 2.6 inches 1.18 inches x 4.72 inches x 3.54 inches 1.02 inches x 4.37 inches x 3.27 inches
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Product Description

Color: Black | Product Packaging: Standard Packaging

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 6 million+ satisfied customers powered by Anker.

Anker 2nd Generation Astro Portable Charger ​External Battery Power Bank
Powering over two million people to date.

PowerIQDetects your device. Delivers the fastest charge.
Exclusive to Anker, PowerIQ amp-adjustment technology intelligently identifies your device to deliver its fastest possible charge.

Ultra-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, LG G2, Asus and some GPS and Bluetooth devices.


Product Details

Color: Black | Package Type: Standard Packaging
  • Product Dimensions: 3.8 x 1 x 1.8 inches ; 4.8 ounces
  • Shipping Weight: 8 ounces (View shipping rates and policies)
  • 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 (3,420 customer reviews)
  • Amazon Best Sellers Rank: #255 in Cell Phones & Accessories (See Top 100 in Cell Phones & Accessories)
  • Product Warranty: For warranty information about this product, please click here

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From the Manufacturer

Astro Mini External Battery Charger 2nd Gen Astro External Battery Charger 2nd Gen Astro3 External Battery Charger 2nd Gen Astro E4 External Battery Charger 2nd Gen Astro E5 External Battery Charger 2nd Gen Astro E7 External Battery Charger
Color selection Black, Silver, Pink, Blue, Gold Black, White, Blue, Green Black, White Black, White Black, White Black, White
Battery capacity 3200 mAh 6400 mAh 12800 mAh 13000 mAh 16000 mAh 25600 mAh
# of iPhone 6 charges 1.2 2.5 5 5 6.2 10
# of iPad Air charges 0.3 0.5 1 1 1.3 2
# of USB charging ports 1 1 3 2 2 3
PowerIQ technology
Max charging speed 1 Amp 2 Amps 4.5 Amps 3 Amps 3 Amps 4 Amps
Size 3.5 × 0.9 × 0.9 inches (lipstick) 3.7 x 1.8 x 1.0 in (candybar) 1.02 x 4.37 x 3.27 inches 5.9 × 2.5 × 0.9 inches (glasses case) 5.9 × 2.5 × 0.9 inches (glasses case) 6.5 × 3.1 × 0.9 inches (Galaxy Note 4)
Weight 2.7oz (egg) 4.8oz (baseball) 10.56oz (iPad mini) 10.4oz (iPad mini) 10.4oz (iPad mini) 15.8oz (football)

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

602 of 631 people found the following review helpful By JJCEO #1 HALL OF FAMETOP 10 REVIEWER on October 22, 2013
Package Type: Standard PackagingColor: 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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143 of 160 people found the following review helpful By Twister TOP 500 REVIEWER on October 17, 2013
Package Type: Standard PackagingColor: 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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57 of 67 people found the following review helpful By Matthew Anderson on November 7, 2013
Package Type: Standard PackagingColor: 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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17 of 18 people found the following review helpful By Stephanie on February 18, 2015
Package Type: Standard PackagingColor: Black Verified Purchase
Wow. I'm SO glad I paid nearly $30 for a USED and BROKEN product from Anker through Amazon.

I was so excited yesterday when I was notified that my package from Amazon was delivered! I got home, grabbed the box and opened it, as excited as a kid on Christmas morning. I slowly and carefully took my Anker 6400mAh Power Bank out of it's packaging. First thoughts: wow! This thing is small and pretty lightweight- perfect for my purse! I grabbed the information booklet and read it, learning about the power bank. I then plugged it in to charge.

I waited for the light to come on signaling it was charging. Nothing. Hm. Tried a different outlet. Nada. Hm. Well, I'll let it power for an hour or two and then check on it. After dinner I checked on it only to be disappointed again.

I unplugged it and started carefully inspecting the product. Whoa! This thing looks like it barely survived a war! Both ends are scratched and dingy. The Micro USB port is crooked. There are two cracks in the plastic on the charging end. It rattles when I lightly shake it, almost as if a piece is loose inside the power bank. Upon further investigation, I saw the specs: 6000mAh. It CLEARLY states 6400mAh online. Well that's just a blatant lie.

I've owned Anker products in the past ordered off Amazon and I've never had a problem. I also don't generally write reviews, but this is an exception.
Waste of time.
Waste of money.

I will be exchanging this for a different brand power bank ASAP.
I am EXTREMELY disappointed in both Anker and Amazon for this.
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