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

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

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Product Description

The all-new 2nd generation Anker® Astro2 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 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

Anker® CG100 charges?
Does the Anker® CG100 have a charging accessory? or you have to purchase extra battery.
Replies(1) Collapse Report as spam Jul 29, 2014 at 5:38 PM

The Anker® CG100 is a cabled mouse so you don't need to charge it.
Reply Report as spam Jul 30, 2014 at 2:00 AM
Manufacturer of the battery cells?
Hi, I just bought this external battery,I would like to know the manufacturer of the battery cells.. thanks~
Replies(2) Collapse Report as spam Jul 28, 2014 at 10:45 AM
Quote From ANKER Team:Thanks!
Reply Report as spam Jul 29, 2014 at 11:36 PM

Our 2nd Gen Astro batteries are top quality Samsung cells.
Reply Report as spam Jul 29, 2014 at 1:00 AM
Charging speed
I have the older model that has a smart port and a universal port. Which port charges a device faster? I have an iPhone 5s and a mophie juice pack plus.
Replies(1) Collapse Report as spam Jul 27, 2014 at 10:42 PM

If you have the choice, always go for the Smart port. It has Power IQ which means it can charge any device you plug in with max compatibility and optimum speed.
Reply Report as spam Jul 28, 2014 at 3:00 AM
Charging and turning off
My Samsung 5v travel adapter has an output of 2.0A but the 2nd Gen Astro2 has an input of 1.2A, is that a problem?And I read that you have to (friendly) shake the 2nd Gen Astro2 to start a charge, but when does it stops charging or how you u turn the 2nd Gen Astro2 off?
Replies(2) Collapse Report as spam Jul 11, 2014 at 6:15 AM
the battery starts charging autmatically and stops only when nothing is plugged into it. When charging that battery itself it is best to not overvolt it, but any decent charger should be able to compensate (just make sure nothing over heats hte first time you try). It is bad for any lithium ion battery to stay plugged in once it is done changing, and the astro will keep trying to keep itself topped off.  
Reply Report as spam Jul 11, 2014 at 5:44 PM

The extra amperage won't cause any problems at all, you'll be able to charge the Astro fine.

The Astro will switch itself off when the device it is charging reaches capacity.
Reply Report as spam Jul 13, 2014 at 9:00 PM
Can I use this charger outside US
Hi. I am wanting to purchase this product, but I live in Singapore. Will it be compatible to charge this battery pack with the non-US voltage etc.Urgent reply will greatly help.Thanks & Regards
Replies(1) Collapse Report as spam Jul 10, 2014 at 11:15 PM

Yes, it'll charge at Singapore voltage levels as well as pretty much any outlets on Earth!
Reply Report as spam Jul 11, 2014 at 3:30 AM
Hi I have a little question regarding the compatibility of the Anker 2nd Gen Astro2 with the Huawei y300.I currently have the Huawei y300 and it charges using it's datacable which uses USB. Will it be compatible? Thanks in advance,De Coninck Arnout
Replies(3) Collapse Report as spam Jul 8, 2014 at 12:54 PM
Andy Faulkner
If it can charge via your computers USB port then it should be compatible
Reply Report as spam Jul 8, 2014 at 2:00 PM
Arnout De Coninck
Quote From Andy Faulkner: Ok thank you :)
Reply Report as spam Jul 8, 2014 at 5:06 PM

Andy got here before us!

He's absolutely right, you should have no problems at all.
Reply Report as spam Jul 9, 2014 at 2:00 AM
Blackberry Q10 Compatibility?
I see that both the 2nd Gen Anker Astro 2 and Anker Astro Slims mention Blackberry Z10 device compatibility under the 'Popular Compatible Models' listing, but I wanted to check that these were also compatible with the Blackberry Q10 devices.  Grateful if someone from the team can confirm.  Many thanks in advance.
Replies(2) Collapse Report as spam Jul 3, 2014 at 10:34 AM

Yep, it'll be compatible with the Blackberry Z10.
Reply Report as spam Jul 4, 2014 at 1:30 AM
Thank you Anker Team, however I know it's compatible with the Z10 - you mention that in the 'Popular Compatible Models' listing above - but I was asking is it was compatible with the Q10? :)
Reply Report as spam Jul 7, 2014 at 8:40 AM
Travel by Motorcycle and Backpacking
Will the vibration and bouncing of a motorcycle pannier or the shaking motion while hiking with a backpack turn the unit on? If nothing is pluged in to it, will the battery discharge if shaken while stored in the pack?  I assume that if it will come on due to vehicle or walking motion, then it will be continously on as long as the rough road or trail continues. What would be the decrease in available battery power over a 12 hour travel period?What is the effect of shaking it on, but not plugging in anything (e.g. didn't know it was on)? Thank you.
Replies(1) Collapse Report as spam Jul 1, 2014 at 9:19 PM

Any kind of shaking will activate our 2nd Gen Astros but there's no need to worry.

The power loss from the activation is negligible, in fact it would take over 100,000 activations to drain even 1% of the battery.
Reply Report as spam Jul 2, 2014 at 9:00 PM
One month; very happy customer!
Title tells it all! I used this on a recent trip with two layovers. Kept my phone (older iphone 4s with BAD battery) charged and in fact had a full charge upon landing. Similar form factor to iphone, but heavier. I keep this in my bag all the time now and always have two smart ports to charge multiple devices on the go. Pulled it out during a full-day conference and I definitely impressed a few co-workers that needed to get a quick charge during the meeting but without access to a wall outlet charger.
Replies(1) Collapse Report as spam Jun 30, 2014 at 3:56 PM
Andy Faulkner
Nice to know about the unit,  thanks 
Reply Report as spam Jul 5, 2014 at 3:03 AM
Pass through charging
Hello,Do any of Anker external batteries support pass through chaning? Can I charge my device with the extrnal battery is charging?Thank you, Jonathan 
Replies(3) Collapse Report as spam Jun 30, 2014 at 9:34 AM

Our 2nd Gen Astro Pros can do this as well as the 2nd Gen E3, the E4 and the E5.

Unfortunately, the 2nd Gen Astro 6000, Astro2 and Astro3 aren't able to do this.
Reply Report as spam Jul 1, 2014 at 1:00 AM
Nathan Young
This Astro 2nd Gen will not support pass through charging.
Reply Report as spam Jun 30, 2014 at 4:02 PM
Micah Felber
Anker's iPhone 5 battery case supports pass through charging. I love it because I no longer need to carry around my lightning cable to charge the phone. By "any" do you mean that you are still shopping for a external battery solution?
Reply Report as spam Jun 30, 2014 at 9:51 AM
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