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Anker 2nd Gen Astro2 9000mAh Portable External Battery Charger with PowerIQ™ Technology

Anker 2nd Gen Astro2 9000mAh Portable External Battery Charger with PowerIQ™ Technology

Charger- 40W 5-port desktop charger

Product Description

The all-new 2nd generation Anker® Astro2 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 a 3 Amp output among dual ports, charge multiple devices all at full speed.

Packed with power.

We figure, the more power, the better. Packed with 9000mAh of juice, and featuring an energy efficiency rate 10% above previous generation Astros and many current standard alternatives, the new Astro2 charges the iPhone four+ times and large-capacity phones like the Galaxy S4 almost three times.

Double take.

Chic and minimalistic, the new Astro2 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 Astro2 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 25W 5-port wall charger or dual-port 24W car charger.
- 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


The instruction manual says the charger has two output ports, one smart port and one universal port. The ad on Amazon says it has a smart port and a universal port and the picture on Amazon shows a smart port and auniversal port.  My charger only has two smart ports and no universal port. I read somewhere that the universal port was for Android phones.  Just want a clarification.  Thanks

Replies(4) Collapse Report as spam Apr 12, 2014 at 12:13 PM

It is showing 2 different port configurations. Amazon does show a universal port where the one on this page show 2 smart ports. I'm not sure what the difference is between the universal and smart but the smart is designed to recognize the device plugged into it and charge it accordingly.

Reply Report as spam Apr 12, 2014 at 12:55 PM

you got the newer version, congrats, the smart port works with all devices

Reply Report as spam Apr 12, 2014 at 12:56 PM
Fire and Ice

You just have a newer version. Your ports work for every device

Reply Report as spam Apr 12, 2014 at 8:50 PM
The older version of the Astro2 had one universal and one Smart Port.The updated version (which you have) has the 2 Smart Ports. These ports are better as they can automatically determine a device's optimum charge level and deliver it accordingly.
Reply Report as spam Apr 18, 2014 at 2:30 AM
Registration ?

I just recieved my Astro2 9,000. So far so good.  Do I need to register it and if so where do I register it?

Replies(3) Collapse Report as spam Apr 11, 2014 at 9:03 PM
Bryon Barker

I don't think you have to register it. I think you just use the product, gather your thoughts on it (likes/dislikes, etc.) and write a review on Amazon. Then send Anker an email with the link to your review.

Reply Report as spam Apr 11, 2014 at 10:03 PM
Tech X-Ray

Nope, no need for registration.


Just have your order id ready if you need to contact them

Reply Report as spam Apr 11, 2014 at 10:51 PM

Nope, if you ever have a problem their e-mail is

Reply Report as spam Apr 11, 2014 at 11:05 PM
Charge itself and devices at same time?

Looks like this battery with PowerIQ is your latest... does it charge itself and at the same time be able to charge others?

Replies(7) Collapse Report as spam Apr 11, 2014 at 4:56 PM

Nope, as soon as you plug in the charger, it turns off

Reply Report as spam Apr 11, 2014 at 5:25 PM
Tech X-Ray

Totally possibly to charge other items while tihs is charging.

Reply Report as spam Apr 11, 2014 at 6:19 PM

Anker doesn't recommend it. It decreases the life of the battery

Reply Report as spam Apr 11, 2014 at 8:37 PM

What a strange idea, why would you even consider such a thing?

using the battery to charge itself is inefficient.  If the battery has 9000mAh of charge and you use it to charge itself, at 80-85% efficiency, you will discharge 9000mAh but only get back at best 7650mAh. So plugging itself into itself will lose you some charge. Better to just leave the charge where it is!

Reply Report as spam Apr 12, 2014 at 12:02 AM

There have been times where I have been tempted to charge my charger while it is charging other devices. Yes, you can do this, but as others have mentioned, it is generally not a good idea to do this because it will decrease the life of the battery and it will not be very efficient.

Reply Report as spam Apr 12, 2014 at 3:09 AM

it does not work on this model, where do you guys get your information??? tech x-ray answers everything, but he is wrong quite a few times. when you plug in a micro usb cable, the output ports turn off, and they dont turn on again until you unplug it

Reply Report as spam Apr 12, 2014 at 4:29 AM
Unfortunately our 2nd Gen Astros can't be charged and supply charge at the same time.Our Astro E4 and E5 can do this though.
Reply Report as spam Apr 18, 2014 at 2:30 AM
Anker 2nd Gen Astro2 9000mAh

Could I charge my iPhone 5 while the Anker portable battery is charging?

Replies(1) Collapse Report as spam Apr 6, 2014 at 6:46 PM
Tech X-Ray

Yes! Of course, it'll have no problem.

Reply Report as spam Apr 6, 2014 at 7:16 PM
USB wall charger

Can I use my iphone usb wall charger?  I don't know the amp/watts.  If not, does the Anker USB charger work?  Which port (Apple or Android).  You should really include the plug.



Replies(3) Collapse Report as spam Apr 3, 2014 at 10:46 PM

Yes the iPhone wall charger will work, but I think it's rated at 1A and 1.5A would be better so an IPad wall charger (up to 2.1A) would be far better.

i did suggest they should include the adapter also as they specify 1.5A however I guess since the battery is serving to replace a wall charger by virtue of mobility, and we must therefore have the devices that will charge from said wall chargers to be replaced, then the assumption is that we already have these chargers at home. Also, I guess it can charge from a car usb charger too and would they have to include one of them also? So how much extra will this cost us especially if 9/10 of us don't want these adapters cos we already have them lying around.....?

Reply Report as spam Apr 3, 2014 at 11:55 PM

I'm getting quite the collection going in the corner of my room. It's getting to be a tangle of wires and adapters...

Reply Report as spam Apr 4, 2014 at 8:18 AM
Tech X-Ray

Yes your iphone charger will work great.

I really don't think a plug is necessary as it only drives the cost up. I also have tons of chargers and plugs as well as cables. Don't nedd anymore


Reply Report as spam Apr 4, 2014 at 11:44 AM
Anker 2nd Gen Astro2 9000mAh

I noticed that 1 port is labeled Smart and the other Universal.  Does this mean that only one port has PowerIQ and will charge quicker?  Or, if I connect 2 Galaxy s3 phones, one will charge quicker or more complete?

Replies(1) Collapse Report as spam Apr 3, 2014 at 12:46 PM
Tech X-Ray

No both should charge at the same speed.


Probably split 1.5 A between the 2 ports since the max output is 3 A

Reply Report as spam Apr 3, 2014 at 12:51 PM
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