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Anker 2nd Gen Astro Pro 15000mAh Triple-Port External Battery

Anker 2nd Gen Astro Pro 15000mAh Triple-Port External Battery

Charger- 40W 5-port desktop charger

Product Description

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

PowerIQ™: Full speed charging. Every device, every time.

Not all USB 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 an industry-leading 4.5 Amp output, charge multiple devices all at full speed.

Up your power.

15000mAh of power keep you and your gear going, and going - and going. Add 700% more battery life to an iPhone, 400% to your large-capacity phone (like a Galaxy S4), or 100-200% 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

- 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. - 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.

Broad Compatibility.

Phones: iPhone, Galaxy, Nexus, One, Droid Razr, Lumia and more.
Tablets: iPad, Galaxy, Nexus and more.
(List not exhaustive, compatible with ALL phones, tablets and other USB, 9V and 12V powered devices.)

Customer Reviews

Rick Fuller
  • Quality Control Not What It Should Be
  • The battery itself looks to be well-made and it is quite portable which makes it practical to shove into a computer bag, for example. But I am concerned that after a night of charging the battery it only reached 94% of its capacity and as soon as I unplugged the battery the level of charge indicator instantly dropped to 90 percent. I hardly consider this to be a good sign regarding how well the battery is going to hold up over time with repeated cycles of charging and discharging. So I am disappointed to say the least though I am not going to return the product. I'm now curious to see how this battery compares to the Citus10,000 mAh and 4,000 mAh combo pack batteries I also purchased at the same time as the Anker 15,000 mAh battery.
  • 2014-04-01
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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.
Q8.  Can it be charged and charge other devices at the same time?
Yes, this battery can simultaneously charge and discharge. However, constant pass-through charging may affect the battery’s lifespan. Note: When the battery’s power level is below 30%, the multi-voltage port will not charge another device while the battery is being charged. The USB charging ports are not affected by this limitation.

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Latest Post

Bad quality controls

I've just received an Astro Pro2 15000. The battery drains a little faster tha expected (to 71% only charging a phone from 70% to full), but... I'll wait to make some complete charges and see. 

My main concern is that the LCD screen is not correctly fixed in place. It's "twisted" a little. Ok, it does not affect to funcionality, buy it's... ugly. Your quality controls needs to be managed better.

Replies(3) Collapse Report as spam Apr 22, 2014 at 8:28 AM
Sorry to hear that you've received a non-perfect Astro Pro2. We do take our quality control very seriously with multiple and rigorous tests in place to route out faulty items before they get sent out, we do also recognise though that it isn't possible to be 100% perfect and that sometimes a sub-standard device may make it out to a customer. When this occurs we do everything we can to rectify the situation, so if you get in touch with our customer service guys at then they'll do everything they can to help you out.
Reply Report as spam Apr 22, 2014 at 11:30 PM

I have a 1st gen and it only has 5 indoicator lights for charge capacity. I seem to recall the first 1 or 2 lights going out pretty quickly but lights 3, 4, and 5 staying lit for quite a while... Might be how the battery works. But give it a full charge and see what it dishes out!

Reply Report as spam Apr 22, 2014 at 11:37 AM

I am from Spain. And bought the battery to Anker UK. Return it it's a shame. It will be a long process and I need the battery for a trip nearly. 


But thanks for the interest. ;)

Reply Report as spam Apr 23, 2014 at 3:21 AM
Amazon UK reviews/safety certification.

Are you aware that some of the reviews on Amazon UK for the Anker 2nd Gen Astro Pro 15000mAh make reference to a completely different product? In one of the reviews, it says "the battery has about 70% charge on delivery, a little shake lights up a circle of Amber LEDs". Eh? What? There are no amber LEDs on the picture above. Another review says "given that the device has a 12000mAh battery". Excuse me! No doubt the problem lies with Amazon but be cautious when reading their reviews.

Despite the above, I am very interested in this product. But I would like to know if this battery pack carries any safety certification. UL, CSA, GS TUV are what I have in mind. It goes without saying that the item must carry the CE mark. Why am I so fussy about this? Well, it contains a battery. Simple as that.

Replies(2) Collapse Report as spam Apr 11, 2014 at 7:24 AM
Christopher Wilson

On Amazon, there's one page for the 2nd Gen Astro Pro with options for the different battery capacities.

The reviews encompass all models, but each one is tagged with the version to which the reviewer is referring.

The highest capacity versions of this product use an LCD whereas the smaller ones use LEDs indicators.

Reply Report as spam Apr 16, 2014 at 6:32 AM

I have the 20,000 mAh version and it does carry the CE mark on the device. As does my Mini 3,000s. So it's simple, buy it. You won't be disappointed.

Reply Report as spam Apr 11, 2014 at 10:23 AM
Astro Pro (2nd Gen) 15000 mAh First Use

Hi, I just received my Astro Pro (2nd Gen) 15000 mAh; and was curious if I should fully charge it before using it for the first time? Or if I should completly drain it before charging it for the first time?

I Just want the battery to last as long as possible.


Replies(3) Collapse Report as spam Apr 2, 2014 at 6:14 PM

*edit* It came at 73% full.

Reply Report as spam Apr 2, 2014 at 11:21 PM
Tech X-Ray

Nah you don't need to fully charge it the first time. Just use it as normal and then charge it normally. 


Li-ion batteries don't have memory and should not be fully discharged

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

Perfect!  Thanks.

Reply Report as spam Apr 8, 2014 at 12:12 AM
Maximum current through USB


I am looking to get an external battery to power my HP Chromebook 11. It uses a microUSB port for charging, and the recommended charging speed is 3 amps at 5.25 volts (15.75 watts).

So my question is, do any of the Anker batteries support that much charge through a single USB port? Also will the included cable be able to transfer that much charge?

I heard that this battery could handle outputting 2.4 amps for the iPad 4, so it would be good to know if I can at least charge that fast using the included microUSB-USB cable.

(Charging at 2 amps results in the device still slowly losing charge during use)



Replies(7) Collapse Report as spam Mar 28, 2014 at 2:12 PM
The 2nd Gen Pro and the Upgraded Astro3 can use the advertised amperage through a single port. For example, the Astro3 can provide 4A among the three ports, if you have one device plugged in it can deliver up to 4A.You'll have no problem with your Chromebook!
Reply Report as spam Apr 8, 2014 at 4:55 AM
Justin Rohr

anake, I have they 2 port wall charger and the 2.1A port can charge my HP 11 Chromebook if not in use, otherwise it'll just hold battery level.

This should provide enough to charge it at 2.4A for Apple products.

Reply Report as spam Mar 28, 2014 at 10:00 PM

Maximum current through usb is 4.5 A max but a single USB doesn't exceed 2.4 A, I believe

Reply Report as spam Mar 28, 2014 at 10:22 PM

It does say 4.5A output so as long as that can all go through one (smart) port then it should do

Reply Report as spam Mar 28, 2014 at 2:59 PM

Yeah so that is the first thing I am looking for confirmation on. I noticed that some external battery packs say 4 amps, then max 2 amps per usb port.

The other thing is whether the supplied cable will be able to handle 3 amps.

Reply Report as spam Mar 28, 2014 at 3:48 PM

In my experience the maximum output (4.5A) is available to any and all ports in use - especially with the smart ports. So yes I would expect a single port to be able to use all of this and certainly the 3A required for you chrome book as long as it's the only one in use (or other uses do not exceed 1.5A)

Reply Report as spam Mar 28, 2014 at 6:12 PM

What you expect is not sufficient confirmation, I would like to hear it from anker themselves.

Here is a case when that expectation would not be met:

Its the Astro 3, that says up to 4 amps smart output. If you scroll through the pictures you can see it says the maximum smart usb output is 2 A and the max for the universal one is 1.5 A.

Reply Report as spam Mar 28, 2014 at 6:45 PM
Using Astro Pro to charge an Asus UX31a

Is it possible to use the Astro Pro to charge an Asus UX31a laptop? The cables supplied aren't the right fitting to charge the laptop from the DC Output. Is another cable available or is there another method?

Replies(2) Collapse Report as spam Mar 27, 2014 at 8:27 PM
The ASUS UX31A has a 19V DC input but the Pro 15000 has an output of 12V.This doesn't definitively mean it won't charge but if it did charge then there's a chance it could be quite slow.We don't stock a cable to use between the Pro 15000 and the ASUS UX31A but if you contact ASUS they might be able to help you obtain an adapter!
Reply Report as spam Mar 28, 2014 at 2:01 AM

Don't think it will charge well. It's too big of a laptop and draws too much power.

Reply Report as spam Mar 31, 2014 at 7:48 PM
The difference?

What's the difference between this item and the Anker Astro E5 15000mAh External Battery.. Is it worth paying a bit more or what please help.

Replies(3) Collapse Report as spam Mar 15, 2014 at 3:57 PM
IT Owl

This one has a barrel plug portion and supports a wider range of devices that don't use USB to charge. It's not worth it if you're only going to be charging USB devices

Reply Report as spam Mar 15, 2014 at 5:50 PM
Ok sounds good i will get the E5 one thanks
Reply Report as spam Mar 15, 2014 at 7:40 PM

Quote From alecalec63: No problem. Glad I can help!

Here's a link to the E5


Reply Report as spam Mar 31, 2014 at 7:49 PM
Astro Pro 15000mAh Triple-Port

Hi Could you let me know if this will power  the follow:, and if so for how long?





Replies(1) Collapse Report as spam Mar 14, 2014 at 2:39 PM
IT Owl
Look at the mAh rating of your device and divide the total rating of this battery (15000mAh) by that device rating and subtract roughly .30 for the amount of times it will charge the device.
Reply Report as spam Mar 15, 2014 at 11:22 PM
Color Nook
Will this charge my Color nook? I see the 20000 version specifically states it will, this one doesn't say.
Replies(6) Collapse Report as spam Jan 24, 2014 at 11:06 AM
Yes. The 20k mAh will charge just about about anything, Nooks, iCrap, laptops, GPS devices.. . Great for road trips too.
Reply Report as spam Jan 24, 2014 at 11:13 AM
iCrap.. haha. I assume the 15000 will charge anything too?
Reply Report as spam Jan 24, 2014 at 11:22 AM
IT Owl
About almost anything except large laptops.
It will charge phones, tablets, gps, cameras, netbooks, portable dvd players, etc
Reply Report as spam Jan 24, 2014 at 12:24 PM
Should I get the 15000? I really want the 20K but it looks like it is always out of supply.
Reply Report as spam Jan 24, 2014 at 2:16 PM
Thank you for contacting us and giving us the chance to assist you.Please kindly be advised the 2nd gen Astro Pro can charge your Color nook, please feel free to purchase it!
Reply Report as spam Jan 27, 2014 at 2:01 AM

Quote From Snytrip: It's back in stock on Amazon!


Check it out here: LINK=

Reply Report as spam Mar 31, 2014 at 7:51 PM
Comparison feature
ANKER Team, think it might be possible to put in a "comparison feature" so that it's a bit more easy to compare features of similar batteries, sizes, weight, power, etc? Makes that job easier when I don't have to copy and paste the info into a separate spreadsheet to properly compare. Power: 15000mAh 20000mAh Output USB: 4.5A (max); DC: 9V / 2A 4.5A (max); DC: 9V / 2A or 12V / 1.5A or 12V / 1.5A Input: 12V / 2A 12V / 2A Weight: 310g / 10.1oz 510g / 18oz Size: 148 x 99 x 16mm 113 x 168 x 16mm / 4.4 x 6.6 x 0.6in it's way easier when the web programmers do it.... that was a PITA.... Thx
Replies(8) Collapse Report as spam Jan 23, 2014 at 2:26 PM
Reply Report as spam Feb 11, 2014 at 2:49 PM
IT Owl
I think that would be a good idea too! I'd love for a compare features of Anker products and allow for people to easier understand which Anker product is best for them!
Reply Report as spam Jan 23, 2014 at 3:31 PM
I agree - this would be a great feature to add!
Reply Report as spam Jan 23, 2014 at 4:50 PM
I also agree, it would be a useful tool on the website!
Reply Report as spam Jan 23, 2014 at 7:45 PM
I'll do it, for one hundred..... one hundred.... one hundred BILLION dollars!!! Muuuuaaaaaahhhhaaaa!!! Muuuaaahhhaaaaa!!! Muuuuaaaaaahhhhhhaaaaaa!!!! [Evil laughs must come in threes]
Reply Report as spam Jan 24, 2014 at 8:34 AM
Thanks for that suggestion. We're currently working on the next version of our website which will include this feature among many new features. Check back in a couple months!
Reply Report as spam Jan 27, 2014 at 1:52 AM

Still waiting....

Reply Report as spam Mar 31, 2014 at 11:14 PM

Oohh Awesome! I can't wait for the new website and see all the goodies you have planned. 


Reply Report as spam Mar 31, 2014 at 7:58 PM
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