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Anker 2nd Gen Astro Pro2 20000mAh Quad-Port External Battery

Anker 2nd Gen Astro Pro2 20000mAh Quad-Port External Battery

Product Description

Tablet & phone compatibility? Universal max-speed charging? Power-packed & portable? The reinvented Astro Pro2 has it all.

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.

Uber powerful.

20000mAh of power keep you and your gear going, and going - and going. Add 1000% more battery life to an iPhone, 600% to your large-capacity phone (like a Galaxy S4), or 130-300% to your tablet (depending on its battery capacity) - all away from an outlet. What's more, the added energy efficiency gives you 10% more usable power than the previous generation and many standard alternatives.

Brilliant display.

Interacting with the all-new aluminum-cased beauty couldn't be easier. The LCD simplifies everything - displaying the remaining power (with precision down to the percent), output, input and voltage selection.

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 FAQ

Q1.  Can I use a different USB cable rather than the cable that comes with the 2nd Gen Astro Pro2 20000mAh 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.  How long will the 2nd Gen Astro Pro2 20000mAh external battery take to be fully charged?
It takes around 5-6 hours to fully charge the battery with the included AC adapter.
Q3.  What devices are compatible with the 2nd Gen Astro Pro2 20000mAh external battery?
The battery is compatible with Android, Apple and almost all other devices charged via USB as well as devices that accept DC power up to 12V/1.5A. It has a maximum output of 4.0A shared between the ports with the USB ports able to deliver the full 4.0A.
Q4.  Does the 2nd Gen Astro Pro2 20000mAh 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.
Q5.  Will the supplied Micro USB v2.0 cable compatible with the 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.
Q6.  What's the output efficiency of the 2nd Gen Astro Pro2 20000mAh 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.
Q7.  Can the 2nd Gen Astro Pro2 20000mAh external battery charge other devices while it is being charged?
Yes.
Q8.  My device charges at 1 Amp, will the 2nd Gen Astro Pro2 20000mAh external battery’s 4 Amp output harm it?
No, the external battery will only supply the maximum charge current allowed by your device.
Q9.  Can the 2nd Gen Astro Pro2 20000mAh external battery charge multiple devices simultaneously?
Yes, it can charge four devices simultaneously. But please note that when using 4 output ports simultaneously, the total output current will not exceed 4A.
Q10.  What does the LCD screen indicate when the 2nd Gen Astro Pro2 20000mAh external battery is charging itself or other devices?
When the battery is charging your devices, the LCD display will display the battery's capacity throughout the charging process and it will automatically shut off when all the connected devices are charged or cease to draw a current. When the battery is being charged, the LCD display will display the battery's capacity throughout the charging process and remain lit after fully charging.
Q11.  What voltage setting should I select to charge my phone or other USB-charged device?
All USB ports have an output of 5V so you don't need to select the voltage for charging USB devices. The voltage selector is for the DC output port.
Q12.  How long will the charge in the 2nd Gen Astro Pro2 20000mAh external battery last without being used?
Generally, the 2nd Gen Astro Pro2 20000mAh external battery's 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, please discharge and recharge it at least once every 4 months.
Q13.  Can the 2nd Gen Astro Pro2 20000mAh external battery be used for international travel?
Yes. However, you may need to use an adapter to allow the AC charger to go into the sockets of the country you're in.
Q14.  Can the 2nd Gen Astro Pro2 20000mAh external battery be taken on board airplanes?
Yes, all Anker external batteries including the 2nd Gen Astro Pro 20000mAh 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.
Q15.  What should I do if the 2nd Gen Astro Pro2 20000mAh external battery can not be charged?
a. Check that the AC adapter is connected securely.
b. Try a different power adapter (12V/2A,size:5.5*2.1mm) with the battery if possible.
c. Please email us at support@ianker.com duiring your 18-month warranty period if the provided acessories or the external battery have problems.
Q16.  What should I do if the 2nd Gen Astro Pro2 20000mAh 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.

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Latest Post

Product Availability - Amazon US
Do you know when this product is going to be available from Anker on Amazon-US? I was so excited to buy it this week, but it is only for sale through the marketplace... I am very excited to use this at a Educational Technology conference in December! Thank you!
Replies(4) Collapse Report as spam Nov 20, 2014 at 11:08 AM
gherardini
Many times you can find them on Ebay if you are in a rush.
Reply Report as spam Nov 20, 2014 at 11:09 AM
TechToyWizard
I was not aware until now that this was a quad port. What a great idea for business meetings. I'm curious, is that how you intend to use it? I may need to get a couple of them.
Reply Report as spam Nov 20, 2014 at 12:32 PM
gherardini
I'm still trying to figure out where the 4th port is....
Reply Report as spam Nov 20, 2014 at 1:54 PM
ANKER Team
It's actually not available directly from Amazon.

If you purchase it through AnkerDirect on the marketplace then that's us and you'll be covered by the 18 month warranty and have access to all our customer care services!
Reply Report as spam Nov 20, 2014 at 9:30 PM
Lady
Which one do I have to buy to use in Spain? Will the one for Germany work?
Replies(1) Collapse Report as spam Nov 19, 2014 at 3:07 AM
ANKER Team
Yes, the German Astro Pro will be shipped with an AC adapter with a European plug.
Reply Report as spam Nov 19, 2014 at 4:30 AM
Compatibility
Would this battery be able to power a small music amplifier which has a DC input of 12V 2A?Thanks, George
Replies(4) Collapse Report as spam Nov 16, 2014 at 7:32 PM
ANKER Team
Unfortunately not. The max output of the 2nd Gen Pro2 is 12V/1.5A so it probably won't work.

Have you considered our 1st Gen Pro2? That'll work with it just fine.
Reply Report as spam Nov 16, 2014 at 10:30 PM
gherardini
Power-wise it shouldl be fine. What could be problematic is if the amp has a power saving mode, it will make the battery shut off its charging cycle. But otherwise you should be fine.
Reply Report as spam Nov 16, 2014 at 8:38 PM
georgegittins
Thanks for the replies! I have thought about the 1st Gen Pro2, however would the battery's 4A output at 12V be ok with the amplifier's 2A input?
Reply Report as spam Nov 17, 2014 at 7:23 AM
DanW
I'm by no means an electrical engineer, so take this with huge grain of salt.  I'll try to run this question by my electrical engineer that works for me tomorrow to verify.  My understanding is that if the supply voltage is at the correct level (12v specified for the device input) then it will probably power the device.  The amperage limits of the battery output (1.5A) would probably limit the volume at which you could play the music if the amp is normally powered by a 2A AC/DC converter.   Generally, if the output for the battery is at the correct voltage but a higher amperage rating, that's okay because the device (audio amp) will only draw as much amperage as it needs.  I am considering buying this battery to power a Cambridge Soundworks portable speaker system (replacing the lead-acid battery that they recommend, as it's only 5Ah and heavy as hell).  The AC/DC converter used for this stereo is (I believe) 1A, so the 1.5A rating on this battery should work.  If anyone can chime in on my analysis, it would be greatly appreciated.
Reply Report as spam Nov 20, 2014 at 11:49 PM
Solar chargers for the Astro Pro2
What solar chargers would you recommend that are compatible and capable of charging the Anker 2nd Gen Astro Pro2 20000mAh battery pack?
Replies(2) Collapse Report as spam Nov 15, 2014 at 6:31 PM
AnkerMember431
Just make sure the solar panel can output at least 1A. It would be great if it can output 2A though
Reply Report as spam Nov 16, 2014 at 5:38 PM
ANKER Team
Unfortunately our own solar charger isn't quite powerful enough for this battery and we don't have a specific recommendation for another brand.

As long as you're getting 12V/2A of DC current into the Pro2 then it'll charge just fine though.
Reply Report as spam Nov 16, 2014 at 9:00 PM
Anker 14W Solar Charger
Hi, can I charge the Anker 2nd Gen Astro Pro2 20000mAh battery pack with your Anker 14W Portable Foldable Outdoor Solar Charger or ar the two products incompatible (plugs, sufficient power, etc.) thanks!
Replies(4) Collapse Report as spam Nov 14, 2014 at 10:10 AM
gherardini
No. Even if the plugs matched, the total output of the solar charger would not charge the Astro Pro2.
Reply Report as spam Nov 14, 2014 at 1:37 PM
Julio Gonnet
What solar chargers would you recommend that are compatible and capable of charging the Anker 2nd Gen Astro Pro2 20000mAh battery pack?
Reply Report as spam Nov 14, 2014 at 5:38 PM
AnkerMember431
It would have to be able to output 4.5A and have the right voltage
Reply Report as spam Nov 16, 2014 at 5:59 PM
ANKER Team
The solar panel's max output is 5V/2A which isn't quite enough to charge our 2nd Gen Pro. It would require 12V/2A.
Reply Report as spam Nov 16, 2014 at 8:30 PM
Question Before Purchasing
Hi, I'm interested in purchasing the Astro Pro2, but I want to make sure that it's compatible with a cable I'm looking at for my Surface Pro 1. The cable is found here: http://www.amazon.com/Afunta-Charge-Magnetic-Microsoft-Surface/dp/B00JE12GO4/ref=cm_cr_pr_pdt_img_top?ie=UTF8
Replies(1) Collapse Report as spam Nov 5, 2014 at 11:18 AM
ANKER Team
No, it looks like the DC barrel plug is 5.5*2.5mm.

The output port on the 2nd Gen Pro2 is 4.3*1.65mm.
Reply Report as spam Nov 11, 2014 at 3:49 AM
power drain..
I got astro pro series about 3 week ago.. within 2 week period the battery has gone from 100% to 80% is this normal.. please let me know thanks
Replies(1) Collapse Report as spam Nov 4, 2014 at 7:48 PM
ANKER Team
No, this isn't normal!

Please give our customer service guys a shout at support@ianker.com and they'll be able to help you further.
Reply Report as spam Nov 11, 2014 at 3:49 AM
Anker 2nd gen astro pro2 20000 mAh
Is it possible to get an adapter and charge the battry pack through a car? 
Replies(2) Collapse Report as spam Nov 4, 2014 at 5:21 PM
runtohell121
You can probably buy a car USB charger... However, charging a battery pack will take a long time so it is not a good idea to charge a battery pack in the car. 
Reply Report as spam Nov 7, 2014 at 11:12 PM
ANKER Team
The 2nd Gen Pro2 needs a 12V/2A input and there are car chargers available which can output this, but we don't recommend a specific brand.
Reply Report as spam Nov 11, 2014 at 3:49 AM
Thingumybob
I have an Astro Pro 20000. I also have a cable I use to charge a battery for a 12v camping lamp from a car cigarette lighter/power output. The cable has no electronics, only a plug at each end i.e. 12v in 12v out (depending on the car's charging circuit). The "female" plug fits the Astro Pro 12v input socket. Can I use the cable to charge the Astro Pro while in the car?
Replies(1) Collapse Report as spam Nov 3, 2014 at 10:45 AM
ANKER Team
As long as the charger outputs 12V/2A of DC current and fits into the Pro then it'll work just fine!
Reply Report as spam Nov 11, 2014 at 3:49 AM
compatability
Will the Anker 2nd Gen Astro Pro2 20000mAh Quad-Port External Battery with PowerIQ™ Technology  charge a Panasonic  HC-V700 camcorder?  the DC input on the camera reads  5.0V. the output on the AC adapter reads 5.0 v 1.6A 
Replies(1) Collapse Report as spam Nov 2, 2014 at 8:23 AM
ANKER Team
Yes, they should work together just fine.
Reply Report as spam Nov 11, 2014 at 3:49 AM
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