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  • Anker 2nd Gen Astro 6400mAh Portable External Battery Charger with PowerIQ Technology for iPhone, iPad, Samsung Galaxy, Nexus and More (Black)
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Anker 2nd Gen Astro 6400mAh Portable External Battery Charger with PowerIQ Technology for iPhone, iPad, Samsung Galaxy, Nexus and More (Black)

by Anker
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Price: $59.99
Sale: $25.99 & FREE Shipping on orders over $35. Details
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In Stock.
Black
  • 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.
  • 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.
  • The Anker Advantage: Join the 6 million+ powered by Amazon 's #1 charging brand. Manual uploaded as images.
  • Exclusive PowerIQ Technology: Detects your device to deliver its fastest possible charge speed up to 2 amps.
  • 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.
6 new from $25.99 8 used from $13.00 1 refurbished from $21.99

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Frequently Bought Together

Anker 2nd Gen Astro 6400mAh Portable External Battery Charger with PowerIQ Technology for iPhone, iPad, Samsung Galaxy, Nexus and More (Black) + Anker® 2nd Gen Astro Mini 3200mAh Lipstick-Sized Portable External Battery Charger with PowerIQTM Technology for iPhone, Samsung, HTC and More (Black) (Black) + AmazonBasics Apple Certified Lightning to USB Cable - 4-Inches (10 Centimeters) - Black
Price for all three: $52.97

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Color: Black
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This item: Anker 2nd Gen Astro 6400mAh Portable External Battery Charger with PowerIQ Technology for iPhone, iPad, Samsung Galaxy, Nexus and More (Black)
Customer Rating (2494) (950) (1665) (443)
Price $ 25.99 $ 36.99 $ 45.99 $ 29.99
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By AnkerDirect AnkerDirect AnkerDirect AnkerDirect
Color Black Black Black 12800mAh Black
Dimensions 1.81 inches x 3.78 inches x 0.98 inches 1.18 inches x 4.72 inches x 3.54 inches 1.02 inches x 4.37 inches x 3.27 inches 0.47 inches x 5.28 inches x 2.76 inches
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Technical Details

Color: Black
  • Size (LWH): 3.78 inches, 0.98 inches, 1.81 inches
  • Weight: 4.8 ounces
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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 (2,494 customer reviews)
  • Amazon Best Sellers Rank: #214 in Cell Phones & Accessories (See Top 100 in Cell Phones & Accessories)
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Product Description

Color: 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 6 million+ satisfied customers powered by Anker. Anker 2nd Generation Astro External Battery Powering over two million people to date. Detects your device. Delivers the fastest charge. Exclusive to Anker, PowerIQ amp-adjustment technology intelligently identifies your device to deliver its fastest possible charge. 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.

From the Manufacturer

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 Reviews

Brilliant product... Worth the money...
Husain Sapatwala
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
Works well, lasts long, charges pretty quickly.
Wesley Bliss

Most Helpful Customer Reviews

522 of 548 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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158 of 170 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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131 of 147 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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41 of 47 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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10 of 11 people found the following review helpful By Erica Z. on June 13, 2014
Color Name: Green Verified Purchase
This battery just didn't work properly. I got the green one in February of this year, and about a month later it was already malfunctioning. It wouldn't "wake up" when I shook it to power on. It had a full or almost full charge, which I know because it would "wake up" when I plugged it into a power source (wall socket) and the little circle indicator would light up to let me know how much of a charge the battery held. The problem was that when it was away from being charged and taken on the road when I was using it for its intended purposes, it would just not wake up. I contacted customer support and they were responsive, which is good, and sent me a new one.

Well a month later after this one arrived, the same issue happens! The battery has a charge, it shows it does- but as soon as it's taken off the charger (wall socket via iPhone AC adapter and charge cord it comes with) it is completely unresponsive. I told customer support and they issued me a refund since this was within their warranty period of a year. (I think Amazon claimed 18 months but Anker says 12, btw.) Anyway they said they would notify the warehouse manager and test out their remaining batteries to see if it was a quality control issue. I think it obviously is, and it was a bummer (multiple times) to be on the road traveling, expecting to use your external battery to save your dying smartphone, only to find it's just a dead clunky box of uselessness. This thing has some weight to it too (as expected) so it was mildly infuriating to have this happen repeatedly after having carried it around in my already-too-full purse all day while traveling.

Edit 8/2014: I had customer service contact me to try to resolve the issue. I have to say they seem to be committed to having me be as satisfied as I could be at this point. They were communicative and responsive, so I would say I am at least happy with their customer service.
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