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  • Anker 2nd Gen Astro3 12800mAh 3-Port 4A Portable Charger  External Battery Power Bank with PowerIQ Technology for iPhone, iPad, Samsung, Nexus and More (White)
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Anker 2nd Gen Astro3 12800mAh 3-Port 4A Portable Charger External Battery Power Bank with PowerIQ Technology for iPhone, iPad, Samsung, Nexus and More (White)

by Anker
2,166 customer reviews
| 24 answered questions

Price: $99.99
Sale: $45.99 & FREE Shipping. Details
You Save: $54.00 (54%)
In Stock.
Sold by AnkerDirect and Fulfilled by Amazon. Gift-wrap available.
White
  • - The Anker Advantage: Join the 10 million+ powered by the #1 choice for USB charging.
  • Exclusive PowerIQ Technology: Detects your device to deliver its fastest possible charge speed up to 4 amps per port or through three ports.
  • Huge Capacity: Charges the iPad Air once, the Galaxy S5 over three times, the iPhone 6 five times and other smartphones multiple times. Recharges in 6-7 hours with a 2 amp adapter (not included) and the included Micro USB cable.
  • Superior Quality: Premium LG cells, cutting-edge circuitry and a sturdy drop-tested exterior ensure durability and safety. Shake to start a charge or check the power level.
  • What You Get: Anker 2nd Generation Astro3 Portable Charger External Battery Power Bank, Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service.
2 new from $45.99

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$45.99 & FREE Shipping. Details In Stock. Sold by AnkerDirect and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

Anker 2nd Gen Astro3 12800mAh 3-Port 4A Portable Charger  External Battery Power Bank with PowerIQ Technology for iPhone, iPad, Samsung, Nexus and More (White) + Anker 20W 2-Port USB Wall Charger with Foldable Plug and PowerIQ Technology for Apple iPhone 6 / 6 Plus, iPad Air 2 / mini 3, Samsung Galaxy S6 / S6 Edge, Nexus, HTC M9, Motorola, LG and More (White) + [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: $63.97

Buy the selected items together

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Color: White

Technical Details

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

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This item: Anker 2nd Gen Astro3 12800mAh 3-Port 4A Portable Charger External Battery Power Bank with PowerIQ Technology for iPhone, iPad, Samsung, Nexus and More (White)
Customer Rating (2166) (3362) (1132) (8193)
Price $ 45.99 $ 39.99 $ 29.99 $ 21.99
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By AnkerDirect AnkerDirect AnkerDirect AnkerDirect
Color White White Black Black
Dimensions 1.02 inches x 4.37 inches x 3.27 inches 0.91 inches x 5.91 inches x 2.44 inches 1.18 inches x 4.72 inches x 3.54 inches 0.65 inches x 5.39 inches x 2.64 inches
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Product Description

Color: White

ANKER: The #1 Choice for USB Charging
- Faster and safer charging with our leading technology
- 10 million+ happy users and counting.
Anker 2nd Generation Astro3 Portable Charger External Battery Power Bank
Recasting the possibilities of mobile power.

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

Huge Capacity
With a massive 12800mAh, charge an iPhone 6 five times, a large capacity phone like the Galaxy S5 over three times or an iPad Air once.

Superior Quality
We use only premium LG cells, together with the most advanced materials and cutting-edge technology, to ensure complete safety.

Ultra Compact
The size of a small hipflask. Now upgraded with higher density cells and efficiency 10% above other brands to put more power in the same, slim design.

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, Dell Venue 11 Pro, Asus tablets and some GPS and Bluetooth devices.

Product Details

Color: White
  • Product Dimensions: 4.4 x 3.3 x 1 inches ; 10.6 ounces
  • Shipping Weight: 13.6 ounces (View shipping rates and policies)
  • ASIN: B00HIZYCM2
  • Item model number: AK-79AN7904S-W2A
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (2,166 customer reviews)
  • Amazon Best Sellers Rank: #15,353 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 Portable Charger 2nd Gen Astro Portable Charger 2nd Gen Astro3 Portable Charger Astro E4 Portable Charger Astro E5 Portable Charger Astro E7 Portable Charger
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 12800 mAh 13000 mAh 16000 mAh 25600 mAh
No. of iPhone 6 charges 1.2 2.5 5.0 5.0 6.2 10.0
No. of iPad Air charges 0.3 0.5 1.0 1.0 1.3 2.0
No. of USB Charging Ports 1 1 3 2 2 3
PowerIQ Technology
Max Charging Speed 1 A 2 A 4.5 A 3 A 3 A 4 A
Size 3.5 × 0.9 × 0.9 inches (lipstick) 3.7 x 1.8 x 1.0 in (candybar) 4.4 × 3.3 × 1.0 in (hipflask) 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 2.7 oz (egg) 4.8 oz (baseball) 10.6 oz (iPad mini) 10.4 oz (iPad mini) 10.4 oz (iPad mini) 15.8 oz (football)

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

Color: 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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136 of 150 people found the following review helpful By Twister TOP 500 REVIEWER on July 28, 2013
Color: 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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180 of 215 people found the following review helpful By AV Man on October 12, 2013
Color: 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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