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

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

60W wall charger - product

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 4.5A shared between the ports with the USB ports able to deliver the full 4.5A.
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 external batteries with a capacity lower than 27027mAh (100 Watt Hours) can legally and safely be taken on board airplanes. To calculate a battery's capacity in Watt Hours: (Battery Capacity(mAh)*3.7)/1000.

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.
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

Input Voltage Regulator?

Does the Atsro Pro 2 self-regulate input voltage? I've purchased a pair of Goal Zero Nomad 20 Solar Panels that when daisy chained and in direct sunlight are putting out 18V. I'm worried this may actually be too much power for the Astro Pro 2. Is this an issue or is the battery "intelligent" enough to regulate the input volatage?

Replies(1) Collapse Report as spam May 21, 2015 at 3:21 PM
Gabrielkbkim

no not the input

Input charges battery pack directly 

if you do use that it will possibly explode

Reply Report as spam May 21, 2015 at 9:56 PM
surface pro 3

Hello ,, can i charge my surface pro 3 with anker astro pro 20000 mah quad port 

is there any way ? i am so dissapointed because i shipped this item to Bangladesh so far from usa so i can not return it ..  

 

thanks

Replies(5) Collapse Report as spam Apr 28, 2015 at 10:19 AM
ANKER Team
Unfortunately, probably not. The 2nd Gen Pro outputs 12V/1.5A which isn't usually enough to charge the Surface Pro 3.

Please contact our customer service team at support@ianker.com for further help.
Reply Report as spam Apr 29, 2015 at 12:30 AM
TechToyWizard

It has so many other uses, I hope you will be able to find other great uses for it.

Reply Report as spam Apr 29, 2015 at 1:16 AM
Michal INN

lol , i thought 2nd generation is good than 1st generation for that i bought it .. now: .. i have other power bank for my mobile and tab . i just bought it for surface .. :( .. 

Reply Report as spam Apr 29, 2015 at 2:20 AM
Gabrielkbkim

Quote From Michal INN: I think 1 gen outputs more power than generation 2nd 

Reply Report as spam Apr 29, 2015 at 8:26 AM
Janet Arthur

Can this charge a Kindle Paperwhite?

Reply Report as spam May 2, 2015 at 8:58 PM
Anker 2nd Gen Astro Pro2
I would like to charge the Anker 2nd Gen Astro Pro2 via a folding portable solar panel. I know that the stated input voltage is 12 volts. However, is there an acceptable voltage range for the input? Thank you.
Replies(4) Collapse Report as spam Apr 27, 2015 at 9:06 AM
TechToyWizard

There are a lot of variances to solar devices so it would be hard to give a yes or no answer to your question. The input voltage should be 12V/2A. There is no definitive answer to what results you can expect with "a folding portable solar panel" because there are many variations of such devices. Within an adequete range the Anker battery should adapt and charge, your actual results will vary including the possibility of a much slower charge. The possibility also exists that some brands and models of solar chargers won't work at all. It is not a guaranteed matching of technologies.

Reply Report as spam Apr 27, 2015 at 1:31 PM
Gabrielkbkim

Anker does not have answer for that 

The input voltage should be 12 V/ 2A as TechToyWizard says 

 

Reply Report as spam Apr 27, 2015 at 11:44 PM
ANKER Team
We do not supply a solar charger that can output enough to charge the Astro Pro2. If you have a solar charger that can output 12V/2A then it'll work just fine with it though!
Reply Report as spam Apr 28, 2015 at 3:00 AM
Ronn Murray

Does the Atsro Pro 2 self regulate internal voltage? I've pruchased a pair of Goal Zero Nomad 20 Solar Panels that when daisy chained and in direct sunlight are putting out 18V. I'm worried this may actually be too much power for the Astro Pro 2. Is this an issue or is the battery "intelligent" enough to regulate the input volatage? 

 

Reply Report as spam May 21, 2015 at 3:17 PM
Anker 2nd Gen with Solar?

Hey guys, looking at purchasing 2 of the Anker 2nd gens to power 2 black magic pocket cinema cameras. Can I recharge the Anker 2nd Gen Astro Pro2 20000mAh with solar or do I need to be plugged into a main power outlet? Cheers, CAM/.

Replies(5) Collapse Report as spam Apr 25, 2015 at 8:02 PM
Gabrielkbkim

if solar charger outputs 12 V 2 Amp consistently YES 

Also Linus Tech Tips uses Anker battery to power Black magic cinema camera

Reply Report as spam Apr 25, 2015 at 9:32 PM
TechToyWizard

There are a lot of variances to solar devices so it would be hard to give a yes or no answer to your question. Of course a mains source will be faster and more consistent. A solar with adequete output could be good if you have a second battery on reserve while you are using the first one. Caution: any time you use solar to charge any Lithium battery be sure that only the solar panel is exposed to the sun and that the battery itself is well insulated for the direct rays.

Reply Report as spam Apr 26, 2015 at 1:04 AM
Cameron Ford

Thanks for your responses. I'm currently looking at this solar option: http://www.powerfilmsolar.com/products/?r42__42_watt_rollable_solar_panel&show=product&productID=276216&productCategoryIDs=6578,6580

the specs listed for this product are:

Operating Voltage: 15.4 Volts

Power: 42 Watts

Current: 2.7 Amps

Is this a suitable option? or is it supplying TOO much power? Cheers guys,

CAM/.

Reply Report as spam Apr 26, 2015 at 7:03 AM
ANKER Team
If your solar panel can output 12V/2A then you can use solar just fine, unfortunately though we don't provide a solar panel that is capable of this.
Reply Report as spam Apr 27, 2015 at 4:30 AM
Cameron Ford

Narrowing in on my solar power setup. Final question: if the output voltage from the solar charge controller into the Anker 2nd Gen is 16.7 volts... is that a problem? ie, is the voltage too high and likley to damage the battery?

Thanks!

CAM/.

Reply Report as spam Apr 30, 2015 at 9:50 PM
Samsung Note 4

Does  this Anker 2nd gen Astro pro 2 20000 mAh unit give me the biggest bang for the buck as far as giving me the most times im able to recharge my Samsung note 4 out of any of the units you sell ?  How many times would  i expect to be able to charge my  Phone (samsung note 4) from completly dead ?  Is there a better suited unit than this to bring on  a  trip where i will be completly off the grid than this unit ? Thank you for your time.

Replies(2) Collapse Report as spam Apr 25, 2015 at 6:32 PM
Gabrielkbkim

Note 4 Requires Qualcomm 2.1 charging system for FAST CHARGING 

This is for laptops 

Anker is making battery for note 4 or qualcomm 2.1 devices so stay tuned

Reply Report as spam Apr 25, 2015 at 9:31 PM
ANKER Team
For travelling we'd probably recommend something in the 'E' range. It's a weigh up between capacity and size/weight.

The E7 will give you around 6 full charges for the Note 4 but it is our largest battery.
Reply Report as spam Apr 27, 2015 at 4:00 AM
Replacement charging adaptor

I lost the DC input wall charger that came with the unit.  Here can I get an appropriate charger for my battery.  It's an Anker Astro Pro Deries, 20000 mAh. model 79AN7906.

Replies(4) Collapse Report as spam Apr 25, 2015 at 10:27 AM
TechToyWizard

12V 2A power adapters are pretty common if you have a local electronics store or even the big discount superstore. You can drop a line to support@ianker.com to see if they can supply one or point you in the right direction. Good luck.

Reply Report as spam Apr 25, 2015 at 12:28 PM
Gabrielkbkim

Get 12 V 2 Amp power adaptor from ebay or buy it from anker

Reply Report as spam Apr 25, 2015 at 9:27 PM
TechToyWizard

Quote From Gabrielkbkim:hard to know how badly eBay stuff has been used or abused. Would suggest getting a new one from a reputable dealer, or Anker if they can supply one.

Reply Report as spam Apr 26, 2015 at 1:06 AM
ANKER Team
You'll need a 12V/2A charger with a 5.5*2.5mm output.

Our customer service team at support@ianker.com will also be ready and waiting to help further.
Reply Report as spam Apr 27, 2015 at 12:30 AM
Astro Pro 12V current capacity

Hello

We previously used (and offered to our customers) the previous silver version of this battery. This had a 12V output rated at 5A. We can no longer get this battery. The new version only seems to offer 1.5A @ 12V which to be honest, is useless. Can you please confirm this is 1.5A and not a mistake in the specifications.

If it is only 1.5A, do you have any batteries that offer a 12V DC output rated at 5A (or more)

Thank you.

Replies(4) Collapse Report as spam Apr 21, 2015 at 11:27 AM
TechToyWizard

This is mostly a forum of other customers. Your best source for an answer would be by dropping an email to support@ianker.com

Reply Report as spam Apr 21, 2015 at 2:44 PM
Gabrielkbkim

Ask ANKER GEEK support@ianker.com 

Reply Report as spam Apr 21, 2015 at 3:22 PM
TechToyWizard

@astrograph - it sounds like you are a reseller. If that is the case you might want to contact Anker's resale department at vip-support@ianker.com

Reply Report as spam Apr 22, 2015 at 2:02 AM
ANKER Team
This is not a typo, the max output of the 2nd Gen Astro is lower than that of the 1st Gen.

The 1st Gen Pro2 is still on sale though and we still support it!
Reply Report as spam Apr 22, 2015 at 2:30 AM
Performance issue

i took delivery of the pro two days ago plugged the unit into the charger it showed around 2% charge within about 1 hour it was showing 100% which I found rather odd, reviews state 5-6 hours to charge, as a test i plugged in my ipad mini which was at around 80% i got it to around 95% and the pro had dropped to around 75% not good in my opinion because at at rate of drop i would be lucky to charge just the one time rather than up to two times as expected. I topped the pro back up to 100% then last night plugged in my iphone 4 which was at 65% this morning the iphone was at 100% but the pro had no powerI plugged it in it shoewed 2%, so much for switching off the device when host has charged, or am i missing something. i will leave it plugged in today for around 5 hours to try again but woukd appreciate advice as to why it did not switch off when the iphone had charg to 100%. the unit appears very well made i cannot believe i have bought a duff one!!! At £50 these are not cheap and expect a more reliable unit, i have a ravpower which is less than half the price it charges ipad mini twice without a hitch, only drawback with the Rav is 13 hours to charge hence buying the Anker Pro.

Replies(3) Collapse Report as spam Apr 18, 2015 at 1:36 AM
Gabrielkbkim

I Think the Battery is defective please contact support@ianker.com because it usually need to be charged up to 2-5 hour

Reply Report as spam Apr 18, 2015 at 3:24 PM
TechToyWizard

Part of what I think you are saying is the battery took a very short time to charge the first time. That is normal because Anker ships their batteries mostly charged (about 70%), so it would be normal to only take an hour to top it off.

Reply Report as spam Apr 18, 2015 at 4:38 PM
ANKER Team
Sorry to hear you're having problems with the Pro.

It sounds like it may be playing up slightly. Please give it a couple more charge then discharges and see if the performance improves.

Our customer service team at support@ianker.com will be ready and waiting to help with a replacement should you need it!
Reply Report as spam Apr 20, 2015 at 2:00 AM
Will this work?

I have a Rino gps that i need to charge from a external battery on a expedition. 

The gps battery is 7.4v 2400mah.
I have 2 chargers for it, a wall charger and a car/cigarette charger . Both have a output of DC 9.5v 1.4amps.

Is there anyway i can use this external battery to charge my battery and how many times will charge it?

can i change it to 9v and just plug it staight across? or use a female cigarette / car accesory adapter with this?
any help would be amazing.

Replies(6) Collapse Report as spam Apr 13, 2015 at 7:05 PM
Gabrielkbkim

Why dont you try it out. Dont be afraid to fail!

I know you have to get pesky adapter to charge with anker but i am thinking it will work because DC output 9V2A 

Reply Report as spam Apr 13, 2015 at 11:10 PM
TechToyWizard

It's getting the juice into that pesky weird 2-pin connector that's the bugger. Can I ask what (to me) sounds logical but I appreciate that everyone has different needs and goals. Why add such a large ext pack to such a small device? I just pop 4 eneloops in and carry a few spares. Lasts forever and I can charge them AC/car/solar/etc. Of course I like to pack light.

Reply Report as spam Apr 13, 2015 at 7:52 PM
Jordan

the garmin rino has a AA adapter, but it cuts FRS transmission down from 5watt to 2watt and 4AA only last 1 day.. 
Not really a option. 
so i was hoping to find a larger battery that wouuld charge the stock lithium ion battery multiple times.. 

Reply Report as spam Apr 13, 2015 at 7:58 PM
TechToyWizard

Quote From Jordan: good points Jordan, as I say everyone has different needs and applications

Reply Report as spam Apr 14, 2015 at 1:06 AM
ANKER Team
As your car charger has a similar DC output as our battery, it should charge with the Astro Pro 2 as well.
Reply Report as spam Apr 14, 2015 at 8:30 PM
Jordan

Quote From ANKER Team:

OK sounds great, now how many charges can i hope to get out of one full charge?
Also is there a solar panel out there that will charge this unit?

Reply Report as spam Apr 23, 2015 at 9:23 PM
IATA Regulations

Hello,

We have been testing this battery on a custom measuring device and it has performed better than the other batteries, even those which supposedly have a larger capacity.

We will need to travel with these devices, does the battery comply with the latest IATA regulations for batteries travelling on aircraft?

If there is an availablecertificate can you please send me a copy.

Thanks

 

Replies(5) Collapse Report as spam Apr 13, 2015 at 7:40 AM
Gabrielkbkim

All the anker battery is okay to take it on to an airplane.

TSA won't bother you during X-ray 

 

Reply Report as spam Apr 13, 2015 at 8:21 AM
Gabrielkbkim

If you need one please contact: support@ianker.com

Reply Report as spam Apr 13, 2015 at 8:24 AM
TechToyWizard

Yes, all external batteries with a capacity lower than 27027mAh (100 Watt Hours) can legally and safely be taken on board airplanes. To calculate a battery's capacity in Watt Hours: (Battery Capacity(mAh)*3.7)/1000. 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.

Reply Report as spam Apr 13, 2015 at 2:45 PM
TechToyWizard

Quote From Gabrielkbkim: Unnecessary elevation to CS, issue has been addressed

Reply Report as spam Apr 13, 2015 at 3:03 PM
ANKER Team
Yes, you can take it on the plane without problems. Please remember to check with your airline in case you want to carry more than one battery per person.
Reply Report as spam Apr 14, 2015 at 4:00 AM
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