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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

Car Charger
Can I use a 12v car charger for the road? Per the specs of the included wall charger, it displays 12v 2amp output
Replies(2) Collapse Report as spam Dec 18, 2014 at 10:59 AM
TechToyWizard
I would think that would be a qualified yes. There are a lot of cheap 12v car chargers being sold and they may not all be up to the task. Of course Anker's car charger's should be fine.
Reply Report as spam Dec 18, 2014 at 1:28 PM
ANKER Team

Is the car charger able to output 12V and does it have the right adapter? As long as the car charger is outputting 12V to charge the Anker. If it is only outputting 5V via USB port, this will not work.

Please let us know if there is anything else we can assist. Thank you.

Reference Ticket#586989 if contacting a CSR by phone.
Emily
AnkerDirect Customer Support
1-800-988-7973
Mon-Fri 9am to 5pm(pst)

Think our Customer Service is top notch or needs improvement? Please share your thoughts by clicking here!

>
Reply Report as spam Dec 19, 2014 at 8:00 PM
Power an HP Laptop?
Would this proivde backup power for an HP Laptop or a MacBookPro?
Replies(2) Collapse Report as spam Dec 17, 2014 at 1:15 PM
TechToyWizard
Nancy - 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.
Reply Report as spam Dec 17, 2014 at 3:46 PM
ANKER Team

This Anker battery can output 12V max. If you HP requires more than 12V, it will not work. Also this will not work with Macbook laptops because we do not have the proprietary magsafe connector.

Please let us know if there is anything else we can assist. Thank you.

Reference Ticket#314711 if contacting a CSR by phone.
Emily
AnkerDirect Customer Support
1-800-988-7973
Mon-Fri 9am to 5pm(pst)

Think our Customer Service is top notch or needs improvement? Please share your thoughts by clicking here!

>
Reply Report as spam Dec 19, 2014 at 2:30 PM
Charge simultaneous..
Hi Anker! just got my Anker 2nd Gen Astro Pro2 20000mAh.. here are my questions, to wit:1. Can i charge simultaneously 2 or 3 ipads? i have an orig ipad1, ipad2, ipad4, and ipad mini1. i know they have different charging watts but is it ok to simultaneously charge them?2. what kind of devices can i charge through this DC output? can u give me some examples?3. is there a way that i can charge this over 12V car charger or car's USB charger? that would be a plus because i travel most of the time..Thanks Anker! More Power!
Replies(1) Collapse Report as spam Dec 15, 2014 at 2:02 AM
ANKER Team
1) Yes you can charge them all with as many USB ports as you can spare!
2) Pretty much anything! As long as their input is below 12V/1.5A you're good to go. We have customers who use it with everything from sewing machines through to radios!
3) If your car charger can output 12V/2A of DC current then it'll charge the Astro Pro just fine!
Reply Report as spam Dec 15, 2014 at 5:00 AM
Minimum current needed
What is the minimum current needed to keep the device awake? I'm having a problem with my Anker Pro 2nd Gen turning off. Is there a way to turn it permanantly on?Thanks.
Replies(2) Collapse Report as spam Dec 12, 2014 at 10:11 PM
gherardini
I think the minimum draw is .5 amp.
Reply Report as spam Dec 13, 2014 at 1:05 AM
ANKER Team
If the Pro2 does not detect a power draw above 0.05A then it will automatically switch off, unfortunately there is now way to bypass this feature.
Reply Report as spam Dec 15, 2014 at 12:30 AM
karen Colbert
Have lost the power cable for this product and am having trouble finding replacement.  Cannot find the AC adapter for sale on this site.  Any help would be appreciated.
Replies(2) Collapse Report as spam Dec 10, 2014 at 11:19 AM
gherardini
Send a message to the support staff at support@ianker.com . See what they can do for you.
Reply Report as spam Dec 10, 2014 at 12:12 PM
ANKER Team
You'll need a 12V/2A AC charger with a 5.5*2.1mm barrel plug.

If you can't find one then our customer service guys may be able to help you further at support@ianker.com.
Reply Report as spam Dec 10, 2014 at 8:30 PM
Battery Output Efficiency
This is probably good information for all Anker's batteries, or at least [holding thumb and forefinger verrrry close together] close.... 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.
Replies(3) Collapse Report as spam Dec 5, 2014 at 10:07 AM
TechToyWizard
Excellent
Reply Report as spam Dec 5, 2014 at 12:43 PM
gherardini
Funny how this information, that so many forum users are looking for, is already here on the website... somewhere.
Reply Report as spam Dec 5, 2014 at 1:26 PM
ANKER Team
This is absolutely true! Thanks for putting it out there.
Reply Report as spam Dec 7, 2014 at 11:00 PM
Battery Charge life with non-use
Interesting what you can learn when you read the FAQ.... Anker has some serious information available when you look for it... Generally, the 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.
Replies(1) Collapse Report as spam Dec 5, 2014 at 9:51 AM
ANKER Team
We do try and put as much info out there as possible but thanks for sharing this and allowing even more customers to find it.
Reply Report as spam Dec 7, 2014 at 11:00 PM
Watt hour capacity of battery
Hi there,Please could you tell me what the capacity of this battery is in watt hours (Wh).Thanks :)
Replies(2) Collapse Report as spam Dec 5, 2014 at 9:06 AM
gherardini
Anker lists the 20,000 Astro Pro2 1st gen as 74 Wh, imagine this is very close to the same.
Reply Report as spam Dec 5, 2014 at 9:14 AM
ANKER Team
Absolutely, it's 74Wh.
Reply Report as spam Dec 7, 2014 at 10:30 PM
Cases?
Are there any cases for this battery? Or maybe a folder type case?
Replies(5) Collapse Report as spam Dec 3, 2014 at 1:42 PM
gherardini
Unfortunately not from Anker. You might be able to find a notebook case, maybe hack something with velcro. Imagination might be your best option here.
Reply Report as spam Dec 3, 2014 at 1:50 PM
Cem Kilicarslan
It comes with a black mesh protective sheath. It prevents it from being scratched inside a backpack etc but the sheath itself is very slippery. Your battery may just slip out of it if you hold it sideways or downwards. So, be careful with the sheath and squeeze the mouth once you get it.
Reply Report as spam Dec 3, 2014 at 1:53 PM
TechToyWizard
The size of this battery is just slightly smaller than the Kindle, which Anker does have a case for. It would easily fit as far as height and width. However the battery is a little thicker so without trying it, it's hard to say. I wonder if Anker would be so kind as to try one of their cases with the battery and see if it fits?
Reply Report as spam Dec 3, 2014 at 2:51 PM
ANKER Team
Unfortunately we don't manufacture a hard case, although it will be supplied with a protective pouch.

Other manufacturers may have cases but we're unable to make a specific recommendation.
Reply Report as spam Dec 4, 2014 at 12:00 AM
TechToyWizard
Thanks Anker Team. Knowing however that the size is about the same as the Kindle, there likely are cases that would fit, it just might take a little experimenting.
Reply Report as spam Dec 4, 2014 at 1:55 AM
Powering Blackmagic Pocket Cinema Camera
Thanks for this product.I bought this specifically to power my energy-hungry BMPCC, which needs 12V but found that the only way to supply power to the camera is through DC-out port. While a cable is provided, I still have to make one for my camera and the right tip/socket size for this smaller DC-out port is not documented. Could you please tell me what the size of this DC-out port is? Thanks.
Replies(5) Collapse Report as spam Dec 2, 2014 at 12:02 PM
gherardini
You might have been better off looking at an Astro Pro2 1st gen that has a 12v output. Think this does 5v USB output only.
Reply Report as spam Dec 2, 2014 at 12:17 PM
Cem Kilicarslan
No, this product gives12V and 9V from a dedicated DC-out port but the size is different from the DC-in port. I need a tip for this smaller port but cannot determine the size.Thanks for the reply though...
Reply Report as spam Dec 2, 2014 at 12:19 PM
gherardini
Roger. Thx.
Reply Report as spam Dec 2, 2014 at 12:52 PM
ANKER Team
The output port is 4.3*1.65mm and the output end of the DC cable is 5.5*2.5mm.
Reply Report as spam Dec 3, 2014 at 3:30 AM
Cem Kilicarslan
Thanks, but as far as I am concerned, there is no 4.3x1.65 size standard plug. The only male plug that is close to the size you mentioned is 4mmx1.7mm. Do you think a 4x1.7mm plug will fit the socket? Thanks again.
Reply Report as spam Dec 3, 2014 at 4:52 AM
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