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  • Anker® 2nd Gen Astro3 12000mAh (4A Output) Portable Charger Triple USB External Battery Pack with PowerIQ™ Technology for iPhone 5S, 5C, 5, 4S, iPad Air, mini, Galaxy S5, S4, S3, Note 3, Galaxy Tab 3, 2, Nexus 4, 5, 7, 10, HTC One, One 2 (M8), PS Vita and other Smartphones and Tablets
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Anker® 2nd Gen Astro3 12000mAh (4A Output) Portable Charger Triple USB External Battery Pack with PowerIQ™ Technology for iPhone 5S, 5C, 5, 4S, iPad Air, mini, Galaxy S5, S4, S3, Note 3, Galaxy Tab 3, 2, Nexus 4, 5, 7, 10, HTC One, One 2 (M8), PS Vita and other Smartphones and Tablets

by Anker
| 14 answered questions

Price: $99.99
Sale: $45.99 & FREE Shipping. Details
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  • PowerIQ™ technology maximizes compatibility with Android, Apple or other devices by enabling charge speeds of up to 4 amps overall or 4 amps per port.
  • 12000 mAh of capacity and an energy efficiency rate 10% above previous generation Astros and many current standard alternatives charges the iPhone six times and large-capacity phones like the Galaxy S4 almost four times.
  • A "shake" starts a charge or displays the remaining power level. The ultra-low power consumption (100000 shakes consume less than 1%) 10-LED power meter balances accuracy and aesthetics.
  • Sturdy construction and matte finish withstand bumps and drops. Grade A cells and premium chips ensure reliability. Input: 5V / 2A; Use a 2A adapter (not included) with the included USB cable for the fastest charging time (9 hours).
  • Package contents: Anker® 2nd Generation Astro3 External Battery, webbed travel bag, micro USB cable, welcome guide, 18-month hassle-free warranty. (Apple adapters, 30 pin and lightning, Samsung 30-pin adapter not included).
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Color: White

Frequently Bought Together

Anker® 2nd Gen Astro3 12000mAh (4A Output) Portable Charger Triple USB External Battery Pack with PowerIQ™ Technology for iPhone 5S, 5C, 5, 4S, iPad Air, mini, Galaxy S5, S4, S3, Note 3, Galaxy Tab 3, 2, Nexus 4, 5, 7, 10, HTC One, One 2 (M8), PS Vita and other Smartphones and Tablets + Anker® 40W 5-Port Family-Sized Desktop USB Charger with PowerIQ™ Technology for iPhone 5s 5c 5; iPad Air mini; Galaxy S5 S4; Note 3 2; the new HTC One (M8); Nexus and More (White)
Price for both: $71.98

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Technical Details

Color: White
  • Size (LWH): 4.37 inches, 3.27 inches, 1.02 inches
  • Weight: 10.56 ounces
  See more technical details

Product Details

Color: White
  • Product Dimensions: 4.4 x 3.3 x 1 inches ; 10.6 ounces
  • Shipping Weight: 14.4 ounces (View shipping rates and policies)
  • ASIN: B00HIZYCM2
  • Item model number: AK-79AN7904S-WA
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (1,379 customer reviews)
  • Amazon Best Sellers Rank: #3,524 in Cell Phones & Accessories (See Top 100 in Cell Phones & Accessories)
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Product Description

Color: White

The 2nd generation Anker® Astro3 recasts the possibilities of mobile power.

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.

Packed with power.
We figure, the more power, the better. Packed with 12000mAh of juice, and featuring an energy efficiency rate 10% above previous generation Astros and many current standard alternatives, the new Astro3 charges the iPhone six times and large-capacity phones like the Galaxy S4 almost four times.

Double take.
Chic and minimalistic, the new Astro3 may feel reserved at first. But, a friendly "shake" reveals its warm inner light to display the power level or begin your charge. Generous, cool, and delightfully intuitive, the new Astro3 is perfect for your next adventure, or just the daily grind.

For optimal use.
• Please use the included cable(s), your device's original cable or a third-party certified one (such as MFi).
• Compatible with all Apple and Android smartphones, tablets (including the Nexus 7) and other USB-charged devices. The iPod nano, iPod Classic, HP TouchPad, LG G2, Asus tablets and some GPS and Bluetooth devices are not supported.
• 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

Works great, charges fast, light weight, and lasts a long time.
H. Singer
I take it with me when I travel and pretty much use that over a power outlet for many days and it keeps my phone charged up.
raceguy
I can recharge my iPad 3 with it up to 80% from 0. and I can charge my iPhone ~6 times to 100%!
Maor Revah

Most Helpful Customer Reviews

Color Name: Black
Length: 5:14 Mins
This review is on Anker Astro3 second generation 12000 mAh black battery pack. This battery pack is a real powerhouse of energy and in my test results it performed extremely well in supplying a charging current to an iPad 3 and an iPhone 4. It is also designed to allow you to charge three items at the same time. I also tested the battery pack charging and iPad 3 and an iPhone 4 simultaneously. It comes with an Apple 30 pin connector and other accessories that you need to make it more useful. You may need to use your original charging cables for some devices so take them with you if you need them.

It is a great power resource to keep your USB recharged devices operating on those long work or school days or while you are traveling. This battery pack is a powerful source of power and many people like me are power users of their smart phones and tablets and need a battery like this. If you are constantly using your phone or tablet then you know that they will run out of power sometime during the day or evening. If you are not near an AC wall outlet with your charger or in your car with a charger what can you do? It is especially important to have some way to recharge if you are traveling in a plane, in the middle of a school classroom or on a bus or train. In addition many of the newer tablets are real power hungry devices and it takes a lot to recharge them.

Here is a powerful battery pack with three USB ports. It can charge your tablet devices or charge your smart phone and if you want it can do both of them simultaneously. I charged two iPhones at the same time in my testing. One Smart USB output port is rated at 5 VDC and 2.4 Amps and the other two are rated at 5 VDC and 2 Amps. It uses Lithium-Ion battery technology and carries a 12000 mAh capacity.
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115 of 127 people found the following review helpful By Twister TOP 1000 REVIEWER on July 28, 2013
Color Name: Black
Yes, another external battery. No, this one is like nothing I have ever tested from Anker or anybody else. It's not a surprise Anker became one of my favorite companies to review new products from because they are constantly introducing something new and/or improved. That is the only way to stay on top of the game and to earn the top rating of your customers.

First of all, even with it's 12000 mAh capacity, this new 2nd gen Astro shrank up in size down to 110 mm x 83 mm x 26 mm which fits very comfortably and feels very nice with its soft touch rubbery finish in your hand. At close to 10 oz in weight you will feel it for sure in your pocket, although it's slick design is very portable and with included mesh pouch is easy to carry around in your bag/purse/backpack or even pants pocket, as long as you are not wearing skinny jeans :) In contrast to most of the today's external batteries with dual output, Astro 3 comes with 3 independent full size usb outputs that deliver a whooping 4A of combined current. I checked it by charging Note 2, S4, and Nexus 7 simultaneously and was able to confirm that right on a dot. N2 was charging at about 2A, S4 at about 1A, and N7 at about 1A as well. I was actually timing and monitoring the percentage of battery change, not just relying on Current Charge app. These 3 usb charging outputs are actually partitioned into one Smart output (intended for Apple devices and other android devices) and two Universal outputs which are specifically designed to charge Android devices at maximum speed. There is some custom circuit which determines max speed and optimizes output correspondingly.
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138 of 161 people found the following review helpful By AV Man on October 12, 2013
Color Name: Black Verified Purchase
I recently purchased this charger and have tried it 3 times now with the below results. The device itself comes with a USB wire that you must use with your own charger. It comes with an adapter for the older iphone/ipad. I have the iphone 5 (1440) and ipad mini (4490 mah) and Kindle keyboard (1750 mah) and have used them in my testing using their own usb adapters. Overall there are 3 usb ports - one smart port and 2 universal ports. The battery comes with a case as well. I will put my opinion at the bottom. All of these test start with the battery at 100%

First Test
Iphone 5 - 10-100% (battery at 80%)
Iphone 5 - 10-100% (battery at 70%)
Iphone 5 - 9-100% (battery at 50%)
Kindle Keyboard 0-100% (battery at 20%)
Iphone 5 - 9-87% (dead)

Final Result 8071.6 which is 67% of the 12000 mah

Second
Iphone 5 - 9-100% (80%)
Ipad mini 10-100% (30%)
Iphone 5 10-100% (20%)
Iphone 5 10-77% (dead)

Final Result 7612.2 which is 63% of the 12000 mah

Third
Iphone 5 - 5-100% (80%)
Ipad mini - 10-100% (30%)
Iphone 5 5-100% (20%)
Iphone 5 8-77% (dead)

Final Result 7770.6 which is 64.8% of the 12000 mah

Overall, the devices charged as if they were plugged into the normal chargers. I had high expectations with most of the reviewer's stating they were getting high 70 to low 80% of the 12000 mah. I am not sure if it has more to do with the lightning charger for the iphone 5 and ipad mini cause more charge to be lost.

A final word about the way that most people test these external batteries. I am not sure that charging a device from 10-50% is the same as charging a device from 60-100% in terms of how many mah it uses.
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