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Anker 2nd Gen Astro Pro2 20000mAh Quad-Port External Battery with PowerIQ™ Technology

Anker 2nd Gen Astro Pro2 20000mAh Quad-Port External Battery with PowerIQ™ Technology


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 USB cables other 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

Will this work for a MacBook Laptop?
Do you know if the Anker 2nd Gen Astro Pro2 will work to power a MacBook laptop? Thanks,
Replies(1) Collapse Report as spam Oct 23, 2014 at 4:47 AM
The ports are for charging USB devices, so you could charge an iPhone or an iPad, but not a MacBook laptop, as this would require a wall charging cord.
Reply Report as spam Oct 23, 2014 at 7:41 AM
Can I charge my ThinkPad W540?
I am interested in this product but I would like to know if I can charge my notebook computer ThinkPad W540?
Replies(1) Collapse Report as spam Oct 22, 2014 at 2:32 AM
Eric Hadley
As long as your ThinkPad charging adapter goes through USB, then the answer is yes!
Reply Report as spam Oct 22, 2014 at 12:20 PM
Astro Pro2 Gen2 Output port size
Hi, I will like to ask if the output port for astro pro gen 2 is 4.3x1.65mm or 5.5x2.5? as some mention on Amazon Q&A that the Input charging port is 4.3x1.65mm, but the Q&A here mention the output port is 5.5*2.5. The input and outport port seem like the size id different too, please assist as my cable is 5.5*2.5.
Replies(1) Collapse Report as spam Oct 20, 2014 at 12:38 PM
Eric Hadley
I believe it can fit a cable size from 4.3x1.65mm up to a size of 5.5x2.5
Reply Report as spam Oct 22, 2014 at 12:24 PM
Eu charger tip...
Hey i bought 2 of those.. One to me and one as a gift, but because you don't ship to norway on ebay or amazon, I bought it from another ebay member... but the charging tip is replaceible and not eu standard, so i can't charge any of my anker 2gen you sell those click on EU "tip's" for the charger? 
Replies(1) Collapse Report as spam Oct 18, 2014 at 2:46 PM
Eric Hadley
It is supposed to come with multi tip USB. At least, the 3 does.
Reply Report as spam Oct 22, 2014 at 12:28 PM
Maximum output from a single usb port?
I have a device that requires 5v/3amp output. Can a single usb output on this battery support this current draw?
Replies(2) Collapse Report as spam Oct 17, 2014 at 11:42 AM
Justin Rohr
USB output: 4.5A (max)PowerIQ works well, so I'd assume it can do 3A.Worse is it would charge a little slower with at minimum the 2.1A that the ports support giving to Apple devices
Reply Report as spam Oct 17, 2014 at 6:38 PM
Eric Hadley
Justin is right. It shouldn't be a problem for this baby! Might just charge a little slower than expected.
Reply Report as spam Oct 22, 2014 at 12:27 PM
Anker 2nd Gen Astro Pro2 20000mAh
I have samsung galaxy pro 8.4 tablet. I would like to know whether the "Anker 2nd Gen Astro Pro2 20000mAh Quad-Port External Battery with PowerIQ™ Technology" will be able to use for my tablet.My travel adapter for this tablet is Samsung Model No. EP-TA10JWE which come with the tablet. This adapter has output of 5.3V 2.0A.Please advise in details.Philip C.  
Replies(1) Collapse Report as spam Oct 14, 2014 at 7:30 PM

Yes, it'll charge your tablet just fine!
Reply Report as spam Oct 14, 2014 at 9:00 PM
I just bought Anker Pro2 20000mah. Can I use the devices, cell phone, tablets etc. while charging with Anker?
Replies(2) Collapse Report as spam Oct 14, 2014 at 1:42 PM
Justin Rohr
Yes, having a portable battery pack is like having your phone plugged into your charger. You can use your phone etc just like it's plugged into the wall. 
Reply Report as spam Oct 14, 2014 at 8:57 PM

Yes, absolutely.

It's the same as charging your devices from a wall socket.
Reply Report as spam Oct 14, 2014 at 9:00 PM
UL approval
Is this product tested according to UL2054 resp. EN62133?
Replies(1) Collapse Report as spam Oct 14, 2014 at 7:10 AM

It doesn't have the EN62133 certification.
Reply Report as spam Oct 14, 2014 at 9:00 PM
Charging MSI laptop and Canon DSLR's
Would this work for charging Canon DSLR's and MSI laptops? The laptop in question is the MSI GT Series GT60 2OD-026US it has a 9-cell lithium ion battery and comes with a 180-watt AC adapter.The Canon DSLR I was wondering about was the 6D. 
Replies(1) Collapse Report as spam Oct 13, 2014 at 12:36 PM

The 2nd Gen Astro Pro2's max output is 12V/1.5A so if this is higher than your laptop's original charger then it'll work just fine. You can confirm your laptop's charge level by checking the original charger for its output in V/A.

For the DSLR, it'll depend on how it is charged usually. If it takes a USB charger then it should work fine.

If you need further help then please give our customer service guys at a shout.
Reply Report as spam Oct 13, 2014 at 10:00 PM
Surface Pro 2 Adaptor
I recently bought the Astro Pro2 20000mAh external battery, is there a surface pro 2 adaptor?
Replies(1) Collapse Report as spam Oct 10, 2014 at 11:04 AM

We don't sell an adapter but you should be able to find one.

The DC output cable is 5.5*2.5mm.

Remember though, the max output of the 2nd Gen Pro2 is 12V/1.5A and if this isn't as much as the Surface's original charger then it may not charge correctly.
Reply Report as spam Oct 12, 2014 at 10:00 PM
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