Your Position: Home > External Batteries > Prev Gen >

Anker Astro Pro2 20000mAh Multi-Voltage External Battery

Anker Astro Pro2 20000mAh Multi-Voltage External Battery

9901 Bluetooth speaker

Product Description

Need to charge more than just your mobile phone? Invest in greater, more versatile power with the Anker Astro Pro2.

A beast of a battery.

When a standard external battery just won’t cut it, reach for the Astro Pro2. Packed with 20000mAh of capacity, this is one portable power pack that’s able to charge most phones 9 times, tablets more than once or a laptop one time.

Hugely versatile.

Choose from between DC 12V / 4A, 16V / 3.5A, 19V / 3A and USB 5V / 2.1A outputs for greater accessibility. The three voltage selections enable this external battery to charge a wide range of laptops – in addition to virtually all USB-charged devices.

Laptop compatibility criteria:

(1) voltage: 12V, 16V or 19V, (2) current: 3.5A or less, and (3) a laptop connector size that fits your power input (see below).

Laptop connector tip sizes (in mm):

6.00 x 4.25 - Sony VAIO
6.25 x 3.00 - Toshiba Satellite A105, M35
5.50 x 2.10 - Toshiba T1900, T1950, T4700 / AcerNote 330T , Acer Aspire 1200
4.75 x 1.70 - ASUS Eee 900, 1000
5.50 x 1.70 - Acer Aspire One AO722 AO725 AOD270
5.50 x 2.50 - ACER Aspire 1600, 5610
4.00 x 1.70 - HP Mini 1000/ 1100 PC Series
5.00 x 3.25 - Samsung NC10, N130, N310
7.40 x 5.00 - HP Pavilion DV6 / HP G60, G61/ HP Compaq CQ60, CQ61 / HP 550 / Dell inspiron 1525, 6000, E1505
7.90 x 5.40 - Lenovo ThinkPad T60, X60, R60

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.

Popular Compatible Models

Apple: iPhone 5S, 5C, 5, 4S, 4, 3GS / iPad, iPad 2, iPad 3, iPad 4, iPad mini / iPod (Apple adapters not included)
HTC: One Max, One, One X, S, V / Sensation, Sensation XE XL / EVO 4G / Radar 4G / Inspire 4G / Vivid 4G / Wildfire S / ThunderBolt / Incredible 2 S / Rezound / Desire X, C, V, HD, S, Z
Samsung: Galaxy S4 / S4 mini / Galaxy S3 / Galaxy Note 3 / Galaxy Note 2 / Galaxy S2 I9100 / Galaxy S I9000 / Verizon Galaxy S3 I535 / AT&T Galaxy S3 I747 / Sprint Galaxy S3 L710 / T-Mobile Galaxy S3 T999 / T-Mobile Galaxy S2 T989 / AT&T Galaxy S2 I777 / AT&T Galaxy S2 Skyrocket SGH-I727 / Galaxy Nexus / Focus S / Infuse (Galaxy Note 10.1, Tab 2, Tab 7.0 not supported)
Motorola: X Phone, Droid Razr, Bionic / Atrix 2 / Triumph
LG: Nexus 4, Optimus 4X, 2X, V, S, T, 3D, 7
Nokia: Lumia 1020 920 820 900 710 800 / N8 / N9
Others: Blackberry Z10 Torch Curve 9900 9360 9320 / Sony Ericsson Xperia Arc S, Sony Xperia Z,X10 / PSP / Nook Color / MP3 MP4 MP5 / GoPro / Amazon Kindle, Kindle Fire,Nexus 7

Customer Reviews

Darrell W Collins
  • Can't beat it for the Yoga 2 Pro!!Verified PurchaseThis review is from: Anker® Astro Pro2 20000mAh Multi-Voltage (5V 12V 16V 19V) External Battery Charger for iPad Air, Mini, iPhone 5S, 5C, 5, 4S, Sam
  • Very satisfied with this product. I use a Yoga 2 Pro for all day onsite work and found an adapter (from round to square) that allows me to use this Anker Astor Pro2 20000mAh to stay running all day. After looking quite a bit, I found a video showing this backup battery with the Yoga 2 Pro. Anker makes a different (newer model) but do not get it, buy this one. The new model does not have the voltage (19v) that is required for the Yoga 2 Pro. This model does!!
  • 2014-07-29

Allen Nguyen
  • Recommended for those who have a lot of stuff to charge.Verified PurchaseThis review is from: Anker® Astro Pro2 20000mAh Multi-Voltage (5V 12V 16V 19V) External Battery Charger for iPad Air, Mini, iPh
  • Very good addition to my backpack (or any other carrying bag) I chose this mostly because it's slim, and it has a good number of devices charges per "refill". The slim part of it helps it slip into my bag without getting in the way of being bulky. I've forgotten (or been lazy) to charge my devices multiple times before leaving the house, which is where this comes in handy. Also great when you've been away from any power sources for a long time. Would recommend.
  • 2014-07-28

Blitherpants
  • Compact and powerfulVerified PurchaseThis review is from: Anker® Astro Pro2 20000mAh Multi-Voltage (5V 12V 16V 19V) External Battery Charger for iPad Air, Mini, iPhone 5S, 5C, 5, 4S, Samsung Galaxy S5
  • I needed a small battery pack to fit on a mobile robot and charge the netbook controlling it. Not only can I charge my laptop on the 19V port, but also simultaneously run a 5V device on the USB port. So far, this battery works excellent and lasts long enough that I've never seen it run out. To spend $100 on a battery made me cringe a little, but so far I feel I made the right decision for my project.If I were to complain at all, it would be because my laptop's tip was not included. But I've searched around, and apparently the charger for the ASUS VivoBook X202E is a rare commodity in these dark times. It was a little frustrating having to spend an extra $20 to buy another charger for my laptop just so I could cut the tip off and manually splice it to the output cable. But I should note that Anker's customer service was very prompt in responding to my request to buy an extra output cable to use with other tips.
  • 2014-07-24

Asiaticdefense
  • This is a must for the gadget bag.Verified PurchaseThis review is from: Anker® Astro Pro2 20000mAh Multi-Voltage (5V 12V 16V 19V) External Battery Charger for iPad Air, Mini, iPhone 5S, 5C, 5, 4S, Sam
  • The only external battery that will charge the Dell Venue 11 Pro with the hard keyboard attached. Would have gotten 5 stars if it had two USB ports.
  • 2014-07-24

K. Whelan "giftogab"
  • Jury Still OutThis review is from: Anker® Astro Pro2 20000mAh Multi-Voltage (5V 12V 16V 19V) External Battery Charger for iPad Air, Mini, iPhone 5S, 5C, 5, 4S, Samsung Galaxy S5, S4, S3, Note 3, HP, D
  • I purchased this to charge my iPhone, Spot Connect, MacBook Pro on an upcoming trip. I have cycled it through once simply testing it to charge the iPhone. I was not as pleased as I would like to be, but will see how the second cycle goes, I got 2 full charges and two partial charges. I should be getting more. Stay tuned for updates.
  • 2014-07-22
<< < 1 2 3 4 5 6 7 8 9 10 > >>

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 support@ianker.com for help.
Q8.  Anker external batteries' compatibility
Anker external batteries are compatible with Android and Apple smartphones and tablets except Asus devices ( Apple connectors are not included, please use your devices original cable).
Q9.  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
Q10.  Do I need to press the power button when charging other devices?
Yes.
Q11.  Can it charge multiple devices simultaneously?
It can charge two devices simultaneously.
Q12.  Can it charge the Samsung Tab?
No.
Q13.  Is it compatible with Asus tablets?
No.
Q14.  How can I tell if this external battery is compatible with my laptop?
Please make sure your laptop's input is the same or lower than the Anker Astro Pro2's and there is a tip in the list bellow that will fit your laptop.

Laptop compatibility criteria:
(1) voltage: 12V, 16V or 19V, (2) current: 3.5A or less, and (3) a laptop connector size that fits your power input (see below).

Laptop connector tip sizes (in mm):
A - 6.00*4.25 - Sony VAIO
B - 6.25*3.00 - Toshiba Satellite A105, M35
C - 5.50*2.10 - Toshiba T1900, T1950, T4700 / AcerNote 330T , Acer Aspire 1200
D - 4.75*1.70 - ASUS Eee 900, 1000
E - 5.50*1.70 - Acer Aspire One AO722 AO725 AOD270
F - 5.50*2.50 - ACER Aspire 1600, 5610
G - 4.00*1.70 - HP Mini 1000/ 1100 PC Series
H - 5.00*3.25 - Samsung NC10, N130, N310
J - 7.40*5.00 - HP Pavilion DV6 / HP G60, G61/ HP Compaq CQ60, CQ61 / HP 550 / Dell inspiron 1525, 6000, E1505
K - 7.90*5.40 - Lenovo ThinkPad T60, X60, R60
Q15.  How long does it take to fully charge this Anker external battery?
4-5 hours with the included adapter.
Q16.  What do the LEDs indicate when the external battery is charging itself or other devices?
The LED indicator will remain unlit when charging other devices. When it is recharging itself, the lights will light up one by one to indicate the charging progress. The LED indicators will all turn off when the Astro Pro2 is fully charged.
Q17.  How can I identify the voltage for my laptop?
Please refer to your laptop's instruction manual, the label on your laptop's battery or its orininal AC adapter.
Q18.  How can I determine the appropriate connector for my laptop?
We offer 10 laptop connectors for you to choose from. Please choose the appropriate connector according to the size and shape of your adapter’s plug. Please refer to the above list in Question 6 for the specifications of certain laptop connectors.

Note: The tips provided are the only ones Anker produces. If you can not determine the tip size of your device from the above table, please contact the devices manufacturer. If a tip for your computer is not provided, this unit may not be suitable for your needs. If you still require assistance, please contact us.
Q19.  What if the Astro Pro2 fails to recharge?
a. Check that the AC adapter is connected securely.
b. Please email us at support@ianker.com duiring your 18-month warranty period if the provided acessories or the external battery have problems.
Q20.  What if the Astro Pro2 fails to charge my devices?
a. Check that the connection between the Astro Pro2 and the electronic device is secure.
b. Check that the Astro Pro2 still holds a charge, and recharge it when the remaining power is low.
c. Check that the Astro Pro2's voltage is compatible with the electronic device's.
d. Make sure that the charging cable is working.
e. Please email us at support@ianker.com duiring your 18-month warranty period if the provided acessories or the external battery have problems.
Q21.  What voltage setting should I select to charge my phone or other USB-charged device?
You do not need to select a voltage. The voltage switch only controls the round, DC output port and not the USB ports (USB ports are always 5V).

You may also like

Feel free to ask questions about this product here.
Your question will be posted on this page.
Anker Customer Support and the Anker user community will do their best to quickly answer your question.

Title:*

Comment:*

Please enter the verification code - humans only!*

  

Latest Post

mr jason graham
Hi there i wonder if you could let me know if this power supply would be fine to run the following device please http://www.usa.canon.com/cusa/consumer/products/printers_multifunction/compact_photo_printers/selphy_cp900They have a battery pack accessory nb-cp2l and a charger model cg-cp200 However I'd like to know if any of your all in one products would do the trick I stead the current mains charger drops mains down to 24v and 1.8 amp at all kind regards 
Replies(1) Collapse Report as spam Jul 29, 2014 at 1:19 PM
ANKER Team


Unfortunately your link doesn't point to a specific device.

The max output of the 1st Gen Pro 2 is 19V/3A though so it'll charge pretty much anything with a lower input than that.
Reply Report as spam Jul 30, 2014 at 1:00 AM
Anker Astro Pro2 20000mAh
What batteries are used in the device?
Replies(2) Collapse Report as spam Jul 29, 2014 at 6:28 AM
ANKER Team


The battery is li-polymer.
Reply Report as spam Jul 29, 2014 at 10:00 PM
b290455
A more accurate? Type?
Reply Report as spam Jul 30, 2014 at 12:08 AM
Connector tip for a Dell XPS L321X
I cannot find a tip that fits your Anker Astro Pro2 for my Dell XPS L321X.  Do you have any suggestions where I might locate one?
Replies(1) Collapse Report as spam Jul 23, 2014 at 10:36 AM
ANKER Team


The output size of the Pro2's DC cable is 5.5*2.1mm so you'll need an adapter to fit that. They should be available online.

If the Pro2 doesn't already have the adapter you need included then unfortunately we don't manufacture the tip you need.
Reply Report as spam Jul 23, 2014 at 11:00 PM
Emily
I was under the impression that I will be able to charge anything I have which has a USB connector, using its own cord - iPhone, Kindle, camera, Mac Pro. I may have purchased the wrong thing!
Replies(1) Collapse Report as spam Jul 23, 2014 at 8:11 AM
ANKER Team


Yes, this should work!

The USB port on the Astro should work with your devices. Is this not happening? Your Astro may be faulty, please give our customer service guys a shout at support@ianker.com, they'll be able to help you further.
Reply Report as spam Jul 23, 2014 at 10:00 PM
Mr Scott Forte
Hi there, I have just bought the Astro Pro2 20000mAh.The whole reason for buying this product is to charge my Mac computers. It seems that this is not possible?I have x1 Mac Book Pro 13" late 2011 also x1 Mac Book Air 13" mid 2013. I just don't understand all the jargon about voltage and can I buy the apple adaptors?Please help.......thanks
Replies(1) Collapse Report as spam Jul 23, 2014 at 6:58 AM
ANKER Team


So pretty much all chargers will have an 'output' rating, which is how much power they can give to the device they are charging. The 2nd Gen Astro Pro2's is 12V/1.5A. If you want to use it to charge another device then you need to make sure that that device's normal charger outputs equal to or less than that. You can confirm these figures on the device's original charger.

We don't stock the Apple adapters unfortunately.

If you're still having trouble then give our customer service guys a shout at support@ianker.com and they'll be able to help you further.
Reply Report as spam Jul 23, 2014 at 9:30 PM

Tal

Output Connector size
Hi,Just got the battery. Want to connect extention cord from the output socket. Please let me know which connector size should I use (5.5mmX2.1mm Female do not fit!).Thanks,Tal
Replies(1) Collapse Report as spam Jul 21, 2014 at 12:24 PM
ANKER Team


The male DC cable output end is 5.5*2.1mm. The DC female output port on the 1st Gen Pro2 is 5.5*2.5mm.

If you're still having trouble then give our customer service guys a shout at support@ianker.com/
Reply Report as spam Jul 22, 2014 at 1:30 AM
Part to connect macbook air to battery
I have the newest macbook air.  If I wanted to use this as a backup battery, what parts are required to connect the mag2 to this?  I know the power adapter (the square thing) comes apart so I could use some type of cable to connect that to the battery but I'm not sure what it's called.
Replies(1) Collapse Report as spam Jul 17, 2014 at 4:48 PM
ANKER Team


First you need to confirm that the 19V/3A that the Pro2 can output is high enough to power the MacBook Air. You can check the Air's requirements by looking at its original power supply for the figures.

Then you'll need an adapter to go on the end of the 5.5*2.1mm DC output barrel plug from the Astro Pro2. We don't actually manufacture an adapter for the Mac inputs but it should be available.
Reply Report as spam Jul 20, 2014 at 8:30 PM
Mr Chris Brumwell
Hi, I'm looking to power 12v photographic equipment in the field. The equipment does not have an internal battery. Can this device be used as a battery or can it only be used as a charger?
Replies(1) Collapse Report as spam Jul 17, 2014 at 7:18 AM
ANKER Team


You'll be able to use this to charge devices that don't have batteries but you'll need to ensure that there is a constant power draw to prevent the Pro2 from switching off.

If the power draw goes below 0.05A for more than 50 seconds then it'll power off and you'll need to press the button to begin charging again.
Reply Report as spam Jul 17, 2014 at 11:30 PM
Compatible with Dell XPS 15 9530?
Can this charge the newest haswell edition XPS 15 from Dell? If so, how many cycles?
Replies(1) Collapse Report as spam Jul 11, 2014 at 11:24 AM
ANKER Team


The max output of the 1st Gen Pro2 is 19V/3A so the power input of your Dell needs to be below this in order to accept a charge from the Astro. You can confirm your Dell's power input by looking at its original charger, the figures should be noted somewhere on it.

The number of cycles depends on the capacity of the Dell's battery. The 1st Gen Pro2 has 20,000mAh so you need to take that figure, take off around 25% (for efficiency issues inherent with all batteries) and then divide that figure by the mAh capacity of your laptop's battery. This will give you the possible number of recharges.
Reply Report as spam Jul 13, 2014 at 10:30 PM
Astro Pro2 Multi as external power bank
I recently purchased an Optoma ML550 projector on amazon.  I try to use it everywhere I can -Japan, USA, Australia, Germany, Canada, Switzerland, South Korea, Brazil.  However, finding usable outlets in the rooms I present in can be a challenge.  Can I use the Astro Pro2 as an external power source (no internal battery in the projector) at 19V 3A DC input?  The specs say say I can on your site, But the projector is not exactly a laptop...Also , Can it charge the Pro2 using a solor panel, say Power Monkey?
Replies(1) Collapse Report as spam Jul 10, 2014 at 6:19 PM
ANKER Team


You'll be able to use the Pro2 with the projector as long as you get the correct adapter.

If you want to charge the Pro2 using a solar panel though, it'll have to be fairly powerful and be able to output at least 18.5V/2A.
Reply Report as spam Jul 11, 2014 at 2:30 AM
<< < 1 2 3 4 5 6 7 8 9 10 > >>


Back To Top


Submit your email address here to subscribe the latest information regularly about our promotion activities and new products.





Thanks for taking the time to visit our site. If you have general questions and suggestions, we’d love to hear from you through the form below.
For more specific inquiries relating to customer service, wholesale, or media requests, feel free to visit our contact us page.

FIRST NAME

LAST NAME

YOUR COUNTRY*

E-MAIL*

TELEPHONE

COMMENT *