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Anker 2nd Gen Astro3 12000mAh External Battery Charger with PowerIQ™ Technology

Anker 2nd Gen Astro3 12000mAh External Battery Charger with PowerIQ™ Technology

Charger- 40W 5-port desktop charger

Product Description

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

PowerIQ™: Full speed charging. Every device, every time.

Not all charging ports are created equal. Standard ports only charge Apple OR Android devices at full speed. Our solution? Smart ports, powered by PowerIQ™ technology, intelligently identify your device and speak the language it needs for full speed charging. Coupled with an industry-leading 4 Amp output, charge multiple devices all at full 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

- To ensure complete safety and best performance, we strongly recommend using your device’s original cable, a third-party certified cable (such as MFI) or our included cable.
- For simultaneous, max-speed charging of your Astro and other devices, check out Anker's new line of 18W / 3.6A car and home adapters.
- Compatible with all Apple and Android smartphones, tablets and other USB-charged devices. The iPod nano, Asus tablets (not include the Nexus 7), the LG G2 and some GPS and Bluetooth devices are not supported.

Popular Compatible Models

Apple: iPhone 5S, 5C, 5, 4S, 4, 3GS / iPad, iPad 2, iPad 3, iPad 4, iPad mini / iPod (Apple adapters not included)
HTC: One Max, One, One X, S, V / Sensation, Sensation XE XL / EVO 4G / Radar 4G / Inspire 4G / Vivid 4G / Wildfire S / ThunderBolt / Incredible 2 S / Rezound / Desire X, C, V, HD, S, Z
Samsung: Galaxy S4 / S4 mini / Galaxy S3 / Galaxy Note 3 / Galaxy Note 2 / Galaxy S2 I9100 / Galaxy S I9000 / Verizon Galaxy S3 I535 / AT&T Galaxy S3 I747 / Sprint Galaxy S3 L710 / T-Mobile Galaxy S3 T999 / T-Mobile Galaxy S2 T989 / AT&T Galaxy S2 I777 / AT&T Galaxy S2 Skyrocket SGH-I727 / Galaxy Nexus / Focus S / Infuse (Samsung 30-pin adapter not included)
Motorola: X Phone, Droid Razr, Bionic / Atrix 2 / Triumph
LG: Nexus 4, Optimus 4X, 2X, V, S, T, 3D, 7
Nokia: Lumia 1020 920 820 900 710 800 / N8 / N9
Others: Blackberry Z10 Torch Curve 9900 9360 9320 / Sony Ericsson Xperia Arc S, Sony Xperia Z,X10 / PSP / Nook Color / MP3 MP4 MP5 / GoPro / Amazon Kindle, Kindle Fire,Nexus 7

Customer Reviews

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Customer FAQ

Q1.  Can I use USB cables othan than those provided with my Anker external battery?
To ensure complete safety and best performance, we strongly recommend using your device’s original cable, a third-party certified cable (such as MFI) or our included cable.
Q2.  Does it work with the new iPhone 5s, 5c?
Yes. But the Apple connector is not included. Please use your device's original cable.
Q3.  Anker external batteries' efficiency.
ALL external batteries lose power due to voltage conversion and circuit resistance.

Approximately 20% of Astro 2nd Generation external battery’s total capacity is consumed, including power lost from circuit heat and voltage conversion within the external battery (approximately 6%) and the charging cable and your device (approximately 14%). This efficiency rate is 15% higher than the industry average of 35%.

Older Astro batteries have lose approximately 30%.

According to industrial standards, all external batteries are labeled based on their raw cells capacity not efficiency. Like others, we are following this standard.
Q4.  How long will the battery lasts while not in use?
Generally, most of our external batteries' static power consumption is lower than 100uA, which will take between 3.5 and 20 years to drain the battery 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:
1. Charge and recharge it at least once every 3-4 months.
2. Do not over-charge or over-discharge it. It is best to keep it charged between 5%-95%.
Q5.  Can Anker external batteries be used for international travel?
Yes. Be sure the USB adapter you bring with is compatible with the voltage of the country you will be traveling to. An adapter's voltage input is usually printed on the adapter.
Q6.  Can external batteries be taken on board airplanes?
Yes, all Anker external batteries 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 Pro 20000mAh (74 wh) which is lower than the above 100 wh limit.
Q7.  What can I do if I lose the provided accessories?
Please check to see if you have extras or contact us via email at for help.

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Latest Post

Battery Heat

Is it normal for the battery pack to become hot while recharging the actual unit from a wall outlet? 

Replies(3) Collapse Report as spam Apr 17, 2014 at 1:36 AM
That is not normal. May I ask if you can write us an email directly to with your order number along with information on how you are recharging the battery please so that we can better assist you?Thank you. Reference Ticket#951230 if contacting a CSR by phone.
Reply Report as spam Apr 17, 2014 at 5:00 PM

I should get a bit warm, enough to hold for minutes without getting hurt or feeling pain. Be sure the charger you are using isn't too powerful or damaged.

Reply Report as spam Apr 17, 2014 at 6:21 AM

Yep. You're exciting those electrons giving them a charge. Same thing happens to you, too, doesn't it?

Reply Report as spam Apr 17, 2014 at 8:53 AM
Can you use it while it's charging?

If I'm near an outlet, can I have things plugged into the battery while it's charging?

Replies(3) Collapse Report as spam Apr 13, 2014 at 8:36 PM
Fire and Ice

Quote From MikeC: Yep always plugged in and in use while plugged in does reduce longevity 

Reply Report as spam Apr 13, 2014 at 10:00 PM

Consider getting the 40w 5 port USB adapter and then you can charge the battery and you other devices at the same time without having to use the battery for this "pass through" charge

Reply Report as spam Apr 13, 2014 at 11:41 PM

I think that will reduse the battery's life. If you're near an outlet plug your other devices into it.

Reply Report as spam Apr 13, 2014 at 9:46 PM
Nexus 5

I am looking for an external battery for my phone but I didn't see the Nexus 5 on the list. Will it still work with it?


Replies(2) Collapse Report as spam Apr 12, 2014 at 7:44 PM
Tech X-Ray

 Yes it works great with the Nexus 5

Reply Report as spam Apr 12, 2014 at 8:43 PM

If it charges with a USB input, then the device will work with this battery. Good luck!!

Reply Report as spam Apr 13, 2014 at 10:44 AM
Does this support the iPad Air

I want to buy this charger but I'm not sure if it does support my iPad Air?

Replies(3) Collapse Report as spam Apr 6, 2014 at 12:21 PM
Tech X-Ray

It definitely will work with your iPad air and other apple devices. Anything that takes a USB connection to charge will work

Reply Report as spam Apr 6, 2014 at 12:29 PM

Yes, only at 10w vs 12w from the wall charger though

Reply Report as spam Apr 6, 2014 at 2:57 PM
Yep, this will charge your iPad Air with no problems.
Reply Report as spam Apr 8, 2014 at 5:12 AM
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