Your Position: Home > Power > Portable Chargers > External Batteries > 2nd Gen Astro >

Anker 2nd Gen Astro3 12000mAh External Battery

Anker 2nd Gen Astro3 12000mAh External Battery

Product Description

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

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 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.

Customer Reviews

Cathleen Coulter
  • love itVerified PurchaseThis review is from: 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, m
  • Excellent charger! Very fast delivery. I'm one super satisfied customer. Thanks so much.
  • 2014-08-25

Wm. Bryant
  • I'm very happy with the cost and the productVerified PurchaseThis review is from: Anker® 2nd Gen Astro3 12000mAh (4A Output) Portable Charger Triple USB External Battery Pack with PowerIQ™ Technology
  • Been in use for about two weeks. First day I charged up a lantern, I pod, and a cell phone. Took it back to full charge and it's still there! I'm very happy with the cost and the product.
  • 2014-08-25

J. O. Tobin "City Owl"
  • The best portable battery everThis review is from: Anker® 2nd Gen Astro3 12000mAh (4A Output) Portable Charger Triple USB External Battery Pack with PowerIQ™ Technology for iPhone 5S, 5C, 5, 4S, iPad
  • This is an amazing product. It keeps me charged up --- with iPhone 5 and an iPad as constant companions this item is essential. I can go on a 16 hr flight and never run out of battery time
  • 2014-08-25

Marco Mejia
  • Great charger with incredible outputVerified PurchaseThis review is from: Anker® 2nd Gen Astro3 12000mAh (4A Output) Portable Charger Triple USB External Battery Pack with PowerIQ™ Technology for iPho
  • This is an amazing charger if you got several devices to charge and/or are out without outlets for a lot of time, it is about the size of an external hard drive.The thing that really sets this charger apart (compared to, for example, a mophie powerstation i own) is the charging speed, the Astro3 will charge everything at full speed without overheating batteries.
  • 2014-08-25
<< < 1 > >>

Customer FAQ

Q1.  Can I use a different USB cable rather than the cable that comes with the 2nd Gen Astro3 12000mAh external battery?
Yes, you can use other cables. However, to ensure compatibility and best performance, we strongly recommend using your device’s original cable, a third-party certified cable (such as MFI) or the included cable.
Q2.  What kind of wall charger should I use to charge the 2nd Gen Astro3 12000mAh external battery?
The battery can be recharged from any PC or laptop USB port or any USB AC adapter. A USB AC adapter with 2A or more output current will maximize charging speed. Lower currents will prolong charge time.
Q3.  What devices are compatible with the 2nd Gen Astro3 12000mAh external battery?
The battery is compatible with Android, Apple and almost all other devices charged via USB. It has a maximum output of 4.0A shared between the ports with each port able to deliver the full 4.0A.
Q4.  How long will the 2nd Gen Astro 3 12000mAh external battery take to be fully charged?
It takes alomost 9-10 hours to fully charge the battery with a 5V/2A wall charger.
Q5.  Does the 2nd Gen Astro3 12000mAh external battery work with the new iPhone 6 and iPhone 6 Plus?
Yes, but the Apple cable is not included. Please use your device's original cable.
Q6.  Will the supplied Micro USB v2.0 cable be compatible with Micro USB v3.0 devices, such as Samsung Galaxy S5/Note2/Note3?
Yes, take a close look at the port and you will see the port is divided, insert the none Micro-USB 3.0 plug to the appropriate side and it will work fine.
Q7.  What's the output efficiency of the 2nd Gen Astro3 12000mAh external battery?
The efficiency of this battery is around 70%-80%. The internal circuit board is 92% efficient, accounting for power lost through circuit heat and voltage conversion, which is up to 5% above the industry average. Energy is also lost within the charging cable and the device being charged (approximately 15-20%). Additionally, the efficiency can be affected by the cable length and the age of the device being charged.
Q8.  Can the 2nd Gen Astro3 12000mAh external battery charge other devices while it is being charged?
No.
Q9.  My device charges at 1 Amp, will the 2nd Gen Astro3 12000mAh external battery’s 4 Amp output harm it?
No, the external battery will only supply the maximum charge current allowed by your device.
Q10.  Can the 2nd Gen Astro3 12000mAh external battery charge multiple devices simultaneously?
Yes, it can charge three devices simultaneously. But please note that when using 3 output ports simultaneously, the total output current will not exceed 4A.
Q11.  What do the LEDs indicate when the 2nd Gen Astro3 12000mAh external battery is charging itself or other devices?
When the battery is charging your devices, the smart LED indicator will respire; displaying its remaining power. It will shut off automatically once your device has completed charging or ceases to draw a current.
When the battery is being charged, the smart LED indicator will light up. The constantly lit portion of the LED circle shows the current level of charge while the cascading LEDs display the portion still charging. The LED display will shut off once battery is fully charged.
Q12.  Will the the 2nd Gen Astro3 12000mAh external battery lose power when it turns on unexpectedly in a back pack or pocket?
Although it may activate occasionally when in your bag or pocket , the power usage of the LED indicator is negligible. It would take over 100,000 activations to drain even 1% of the battery's capacity.
Q13.  How long will the charge in a 2nd Gen Astro3 12000mAh external battery last without being used?
Generally, the 2nd Gen Astro3 12000mAh external battery's static power consumption is lower than 100uA, which will take between 3.5 and 20 years to drain completely. However, the chemicals within the li-ion battery will gradually become less active over prolonged periods without use. Most will die in 2 years of inactivity. To extend your battery's life, please discharge and recharge it at least once every 4 months.
Q14.  Can the 2nd Gen Astro3 12000mAh external battery be used for international travel?
Yes. Please be sure that the USB AC adapter is compatible with the voltage of the country you're travelling to. The input voltage of an adapter is usually labeled on the adapter.
Q15.  Can the 2nd Gen Astro3 12000mAh external battery be taken on board airplanes?
Yes, all Anker external batteries including the 2nd Gen Astro3 12000mAh external battery can legally and safely be taken on board airplanes. Here are the relevant requirements:
Quoted from Federal transportation security rules (Effective January 1, 2008):

Lithium ion batteries (a.k.a.: rechargeable lithium, lithium polymer, LIPO, secondary lithium).
-Passengers may carry consumer-sized lithium ion batteries [no more than 8 grams of equivalent lithium content or 100 watt hours (wh) per battery]. This size covers AA, AAA, 9-volt, cell phone, PDA, camera, camcorder, Gameboy, and standard laptop computer batteries.
-Passengers can also bring two (2) larger lithium ion batteries (more than 8 grams, up to 25 grams of equivalent lithium content per battery) in their carry-on. This size covers larger extended-life laptop batteries. Most consumer lithium ion batteries are below this size.

Anker's largest external battery is currently the Anker Pro2 20000mAh (74 wh) which is lower than the above 100 wh limit.
Q16.  What should I do if the 2nd Gen Astro3 12000mAh external battery can not be charged?
Please try a different AC adapter and Micro USB cable to see if that helps. Email us at support@ianker.com during your 18-month warranty period if this doesn't fix the issue.
Q17.  What should I do if the 2nd Gen Astro3 12000mAh external battery can not charge other devices?
Please try a different charging cable between the Astro and your device. Email us at support@ianker.com during your 18-month warranty period if this doesn't fix the issue.

You may also like

Feel free to ask questions about this product here.
Your question will be posted on this page.
Anker Customer Support and the Anker user community will do their best to quickly answer your question.

Title:*

Comment:*

Please enter the verification code - humans only!*

  

Latest Post

Liam Malone
Will this work with my Galaxy Note 2 tablet 10.1?
Replies(2) Collapse Report as spam Dec 12, 2014 at 12:42 PM
gherardini
yes. it will.
Reply Report as spam Dec 12, 2014 at 1:30 PM
ANKER Team
Yes, they'll work together well.
Reply Report as spam Dec 14, 2014 at 10:30 PM
Compatibility with LG G2
You said that Anker using the battery coming from LG. So is it compatible with my LG G2. Or there is new update?
Replies(3) Collapse Report as spam Dec 7, 2014 at 11:30 PM
runtohell121
This external battery will charge your LG G2 as long as you have the micro usb cable. 
Reply Report as spam Dec 7, 2014 at 11:54 PM
ANKER Team
Unfortunately it's still not compatible with the G2. The G2 has some unusual charging technology which means that its incompatible with many external batteries and 3rd party chargers.
Reply Report as spam Dec 8, 2014 at 4:00 AM
gherardini
Oops....
Reply Report as spam Dec 8, 2014 at 9:24 AM
good charger but had one problem
great quality and build charger but the only problem it had is the shake to wake feature, which caused a lot of battery drain when it was unessecary. for example in the car and in my back bag but overall experience its a great charger.
Replies(2) Collapse Report as spam Dec 7, 2014 at 5:34 PM
Jon
Overall drain from the shake to wake should be fairly low.  I haven't noticed a quantifiable amount.  I forgot what they said but it was like 10k shakes per 1% drain... I have noticed the quality of the usb cable or temperature changes being a much bigger issue.  I would prefer a way to turn the feature off though.... I just overall dislike my devices doing anything when I am simply walking around.
Reply Report as spam Dec 7, 2014 at 7:55 PM
ANKER Team
The shake-to-wake feature really doesn't drain the battery to any noticeable extent.

It'd take over 100,000 shakes or activations to drain even 1% of the battery.
Reply Report as spam Dec 7, 2014 at 10:00 PM
Review
I recieved the Anker 2nd generation Astro3 in a contest promotion. I gifted it to my mother who owns a Kindle and a Kindle Fire. She carries this charger with her when she is away from home and absolutely loves it. Thank you Anker for such great products
Replies(3) Collapse Report as spam Nov 26, 2014 at 9:33 PM
ANKER Team
We're glad to hear that the Astro is so useful for your mother!

Remember to keep your eyes peeled for our Black Friday deals coming up very soon.
Reply Report as spam Nov 27, 2014 at 3:30 AM
gherardini
Many Anker products make great gifts! My favorite is the Mini 3000, inexpensive and a welcome introduction to having a good battery with you when needed. Makes lots of people believes in Anker's great stuff!
Reply Report as spam Nov 27, 2014 at 8:50 AM
AnkerMember431
Anker has the best external batteries!!
Reply Report as spam Nov 29, 2014 at 12:52 AM

Roi

life cycle
Good Day! i would like to know the battery life cycle of the power banks. Thanks! 
Replies(4) Collapse Report as spam Nov 25, 2014 at 11:35 AM
gherardini
500 charging cycles is what is tested. can you get more? yes, but at that point you can usually expect battery life degredation.
Reply Report as spam Nov 25, 2014 at 11:39 AM
Roi
Quote From gherardini:I see, Thanks for the quick reply! :) 
Reply Report as spam Nov 25, 2014 at 11:42 AM
AnkerMember431
On average, 500 cycles
Reply Report as spam Nov 25, 2014 at 1:43 PM
ANKER Team
Do you mean its functional lifespan?

We wouldn't expect a significant drop in performance before the 500th cycle.
Reply Report as spam Nov 25, 2014 at 9:30 PM
Problem with charging
i have an extremely vague/ unique problem. I have been using an anker 12000 mAh powerbank for almost 6 months now. It didnt come with a charging cable just one short 1 ft micro usb-usb cable for charging devices. Although the charger itself works great, i have had to replace atleast 10 cables that i use for charging the anker itself. It somehow spoils the cables used to charge it and after using any cable for 10-12 days it stops charging the anker anymore unless i replace it. What exactly is the problem here ???
Replies(5) Collapse Report as spam Nov 21, 2014 at 10:26 AM
Nayan Raheja
Yes using the same wall charger. That works fine.Cables are still usable for charging normal devices like phones etc but somehow doesn't charge the Anker !! That's what's driving me bonkers ! I am not sure whether the anker is spoiling them somehow or is it a loose connection at the junction with the cable.
Reply Report as spam Dec 3, 2014 at 10:10 AM
gherardini
You can always order a set of Anker's new micro USB cables. They. Are. Awesome. Bombproof and warranteed.
Reply Report as spam Nov 21, 2014 at 1:23 PM
AnkerMember431
How were you able to purchase this product? Perhaps you can get the cables in the same manner
Reply Report as spam Nov 22, 2014 at 10:37 AM
Nayan Raheja
Quote From gherardini:Thanks for the reply. Where and how can one purchase these cables ? I reside in New Delhi , India.
Reply Report as spam Nov 22, 2014 at 9:51 AM
ANKER Team
Yes, the Astro just comes with a single Micro USB cable used for charging the Astro itself.

Have you been using the same wall charger to charge the Astro as well? Are the cables totally unusable after you've been using them with the Astro?

Please give our customer service guys a shout at support@ianker.com, they'll be able to help you further.
Reply Report as spam Nov 23, 2014 at 8:30 PM
LG G3 and Samsung Galaxy S4?
Hi all! I would like to buy the 2nd Gen Astro3 12000mAh External Battery Charger and i'm wondering if i will be able to simoultaneously charge this 2 devices: LG G3 and Samsung Galaxy S4. Anyone encountered any kind of trouble recharging a LG G3 with this external battery charger?Thank you very much. Bye!   
Replies(3) Collapse Report as spam Nov 19, 2014 at 12:53 PM
runtohell121
It should be fine charing both of the device at the same time. 
Reply Report as spam Nov 19, 2014 at 1:50 PM
ANKER Team
Yes, it'll charge both of those just fine!
Reply Report as spam Nov 19, 2014 at 9:00 PM
AnkerMember431
Yes, it'll work just fine! 
Reply Report as spam Nov 22, 2014 at 7:42 PM
4A Power Output
Hi, can it provide 4A to a single device? ThanxMarco
Replies(3) Collapse Report as spam Nov 18, 2014 at 10:32 AM
gherardini
No. Max is 2.4A per port.
Reply Report as spam Nov 18, 2014 at 11:08 AM
ANKER Team
Yes, it can output 4A from a single port.
Reply Report as spam Nov 18, 2014 at 10:00 PM
AnkerMember431
Well, I guess you learn something new everyday! I had no clue it can output 4A from one port!!
Reply Report as spam Nov 22, 2014 at 7:55 PM
charging in Europe
Hi, can the portable batteries be charged on 220v-240v or only in the US?
Replies(4) Collapse Report as spam Nov 16, 2014 at 10:20 AM
gherardini
The battery charges from a USB interface, so as long as whatever charger you are using that has a USB charging port can plug into whichever of the 17 different EuroZone wall outlets, charging in Europe is perfectly fine. Anker makes great wall chargers that you can get adapters for, or if you would like to get an international USB charger with all the adapters built in, look at a Skross, http://www.amazon.com/Skross-World-Travel-Adaptor-Charger/dp/B002G8YKC8
Reply Report as spam Nov 16, 2014 at 10:29 AM
AnkerMember431
Just charge it with your regular adapter. It would be a good idea to use a travel adapter since this is normally for the US
Reply Report as spam Nov 16, 2014 at 5:33 PM
gherardini
But keep inj mind that the USB charging output is the same world-wide. So no problems.
Reply Report as spam Nov 16, 2014 at 8:43 PM
ANKER Team
Yep, they can be charged from pretty much any USB output on the planet as long as they're outputting at least 5V/1.5A!
Reply Report as spam Nov 16, 2014 at 10:30 PM
How offten to re-charge Astro3?
Hi, can I re-charge my Astro3 whenever I like? or is it better to re-charge it when the Astro3 power level is low? which way is better? Thanks.
Replies(4) Collapse Report as spam Nov 15, 2014 at 11:02 PM
runtohell121
I would say it's fine to recharge whenever you want but people have different opinion on this. 
Reply Report as spam Nov 16, 2014 at 2:15 AM
gherardini
Anker's stance on this is after the initial full-charge and run-down that it doesn't really matter when you charge it, but it should be charged when within 20% - 80% capacity in order to keep the battery in prime condition. The batteries don't like being run all the way down before it's next charge, but there's a lot of freedom on charging that will keep you battery in optimal condition.
Reply Report as spam Nov 16, 2014 at 7:42 AM
AnkerMember431
After a full charge cycle, yes, you can. Just don't run it down completely because it isn't good for the battery.
Reply Report as spam Nov 16, 2014 at 5:36 PM
ANKER Team
As long as you're not keeping it at 0% or 100% for extended periods then you're fine charging it whenever you like.
Reply Report as spam Nov 16, 2014 at 9:00 PM
<< < 1 2 3 4 5 6 7 8 > >>


Back To Top


Submit your email address here to subscribe the latest information regularly about our promotion activities and new products.





Thanks for taking the time to visit our site. If you have general questions and suggestions, we’d love to hear from you through the form below.
For more specific inquiries relating to customer service, wholesale, or media requests, feel free to visit our contact us page.

FIRST NAME

LAST NAME

YOUR COUNTRY*

E-MAIL*

TELEPHONE

COMMENT *