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Anker Astro 6700mAh Ultra-Compact Premium Portable Charger (2nd Generation External Battery Power Bank) with Fast Charging PowerIQ Techonology and High-Quality Panasonic Battery Cells

4.4 out of 5 stars 4,297 customer reviews
| 544 answered questions

Price: $59.99
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In Stock.
Sold by AnkerDirect and Fulfilled by Amazon. Gift-wrap available.
Black
Standard Packaging
  • The Anker Advantage: Join the 10 million+ powered by our leading technology.
  • Exclusive PowerIQ Technology: Detects your device to deliver its fastest possible charge speed up to 2 amps.
  • High Capacity: Charges the iPhone 6 well over two times, the Galaxy S6 1.5 times , and other smartphones multiple times.
  • Superior Quality: Premium Panasonic cells, cutting-edge circuitry and a sturdy drop-tested exterior ensure durability and safety. Recharges in just over 4 hours with a 1.2 amp adapter (not included) and the included Micro USB cable.
  • What You Get: Anker 2nd Generation Astro Portable Charger, Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service. Lightning cable for iPhone / iPad sold separately.
2 used from $18.69

There is a newer model of this item:


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 $49. Details In Stock. Sold by AnkerDirect and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

  • Anker Astro 6700mAh Ultra-Compact Premium Portable Charger (2nd Generation External Battery Power Bank) with Fast Charging PowerIQ Techonology and High-Quality Panasonic Battery Cells
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  • AmazonBasics Apple Certified Lightning to USB Cable - 4 Inches (10 Centimeters) - Black
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  • Anker PowerCore+ mini 3350mAh Lipstick-Sized Portable Charger (3rd Generation, Premium Aluminum Power Bank) One of the Most Compact External Batteries, Uses High-Quality Panasonic Cells
Total price: $40.97
Buy the selected items together

Product Features

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

Product Description

Color: Black | Product Packaging: Standard Packaging

ANKER: The #1 Choice for USB Charging

• 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 Information

Color:Black  |  Product Packaging:Standard Packaging
Product Dimensions 3.8 x 1 x 1.8 inches
Item Weight 4.8 ounces
Shipping Weight 7.2 ounces (View shipping rates and policies)
ASIN B00EF1OGOG
Item model number AK-79AN7902-B2A
Batteries 2 Lithium ion batteries required. (included)
Customer Reviews
4.4 out of 5 stars 4,297 customer reviews

4.4 out of 5 stars
Best Sellers Rank #677 in Cell Phones & Accessories (See Top 100 in Cell Phones & Accessories)
#32 in Electronics > Portable Audio & Video > MP3 & MP4 Players & Accessories > MP3 & MP4 Player Accessories > Batteries & Battery Packs
#32 in Cell Phones & Accessories > Cell Phone Accessories > Batteries & Battery Packs > Portable Power Banks
#107 in Cell Phones & Accessories > Cell Phone Accessories > Chargers & Power Adapters
Discontinued by manufacturer Yes

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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From the Manufacturer

PowerCore+ Mini Astro 6400mAh Astro3 12800mAh E4 13000mAh E5 16000mAh E7 25600mAh
PowerCore+ 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 3350 mAh 6700 mAh 12800 mAh 13000 mAh 16000 mAh 26800 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

Top Customer Reviews

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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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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Package Type: Standard PackagingColor: Black Verified Purchase
I bought the Astro 2 under 3 months ago. It worked well and used to recharge my Galaxy S4 at nearly the same rate as when plugged into an outlet. However, just as a few others have noted, it died quickly. I think I used it less than 10 times.

Before leaving on a business trip last week, I plugged it into the wall using my phone OEM charger (5V/2A) as usual. Astro 2 was at approx. 40% charged. A few hours later, I unplugged it and noticed the LED status lights wouldn't illuminate to show current capacity despite the obligatory light tap. I figured the lights had died; they had always seemed a bit gimmicky anyway, so I didn't think much of it beyond planning to ask Anker for an exchange (which I did via email shortly thereafter).

A few hours later, I was on a flight to San Francisco when my phone's charge level got low. I plugged in the Astro 2, gave it a tap, and....nothing happened. The phone wouldn't start charging. I unplugged it. Then I noticed, the Astro 2 was starting to get warm. A few seconds after that, it got HOT. It appeared some short of a chemical reaction had started internally (the way alkaline batteries react if you try to short-circuit them). I put it in an air sickness bag, leaving the top open, and kept an eye on it. An hour later, it had cooled a bit but was still fairly warm.

On landing, I emailed Anker again and explained what happened. I also said I no longer wanted to exchange it for another one. Approx. 20 hours later, I got a response from them offering me a full refund. They also asked some additional questions including the Astro's serial#. When I picked it up (off the table in my hotel room where it had sat untouched and unplugged this entire time) to check the SN, the thing was still very warm! I was dumbfounded.
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