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Anker Astro Pro2 20000mAh Multi-Voltage External Battery

Anker Astro Pro2 20000mAh Multi-Voltage External Battery

78APIPADMNI2-02USA

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

Customer Reviews

gebsews "GEBSEWS"
  • Runs my electric spinning wheel with no problems.Verified PurchaseThis review is from: Anker® Astro Pro2 20000mAh Multi-Voltage (5V 12V 16V 19V) External Battery Charger for iPad Air, Mini, iPhone 6,
  • I bought this battery to be able to run my Hansencrafts minispinner (electric spinning wheel). Works great! The minispinner draws about 1.5, so I was able to go a couple days without charging. Came with a lot of extra adapter tips and the one I needed for the minispinner was already with the kit. I also tested it to charge my ipad and it charged a lot faster than I thought one of these units could do. I'm happy with my purchase.
  • 2014-10-27

S. Moore
  • Hefty battery delivers near (but not quite) to advertised capacity
  • The battery capacity as advertised is 20,000mAh. I measured 12,760mAh using a Vencon UBA battery analyzer from the USB port operating at 1 Ampere (approximately the C/10 rate). The voltage stayed steady at 5.12V throughout the entire discharge process. Assuming the Anker battery uses a boost converter from the internal Lithium-ion battery (3.7V nominal) to USB (5.12V measured), this is x1.38 voltage boost. Assuming the boost circuit is 90% efficient, the conversion ratio is 1.54. Therefore, if I measured 12.76Ah capacity from the USB port, the internal battery is approximately 19.6Ah. This number is near to the advertised 20,000mAh. Correcting for my approximations, the real capacity is probably about 5% less than their advertised capacity - a little disappointing, but not unusual for battery manufacturers to overstate technical parameters in ad copy.I tested the battery clamped between two large aluminum heatsinks to approximate an isothermal test condition. Without the heatsinks, the battery warmed slightly during a 2-Amp discharge and subsequent recharge.The battery was tested on a Dell e6230u laptop. The laptop recognized the battery and enabled full power operation. Dell laptops require a special encoded power connection. Some third-party cables do not have the encryption chip and the laptop rejects the connection. The Anker battery successfully passed the Dell encryption interrogation and was recognized as an acceptable power source.After a few international flights, some cycles, and calendar life, I will repeat my capacity measurements and post an update.
  • 2014-10-13

WaterDemon
  • Excellent product when combined with the Vktech 28 connector plug ...Verified PurchaseThis review is from: Anker® Astro Pro2 20000mAh Multi-Voltage (5V 12V 16V 19V) External Battery Charger for iPad A
  • Excellent product when combined with the Vktech 28 connector plug pack, located here: http://www.amazon.com/gp/product/B00CMMO6AEFirst charge of the device, and it ran my 2013 Razer Blade for better than 2 hours on high performance mode while watching Netflix. (let the Anker drain down to 10%). Slim, high quality, and fairly light given what it is. Nice to have the extra power on the go, at a decent price point as well.
  • 2014-10-13

A. Houston
  • Beautiful and PowerfulVerified PurchaseThis review is from: Anker® Astro Pro2 20000mAh Multi-Voltage (5V 12V 16V 19V) External Battery Charger for iPad Air, Mini, iPhone 6, 5S, 5C, 5, 4S, Samsung Gala
  • Way cool. Beautiful battery and has saved my tail, more than once. It's about the size of a thin netbook computer, a little heavy, but lasts "forever" and has charged everything I've pllugged into it. Keep in mind, charging and powering are two different things. It will charge my Toshiba F755 computer, but it won't power it. Read about how to reset it if it freezes (usually because of something I did). Also, how to switch power from the battery's output to the USB port. Very satisfied.
  • 2014-10-07

jasim
  • hope to have more than 1 usb portVerified PurchaseThis review is from: Anker® Astro Pro2 20000mAh Multi-Voltage (5V 12V 16V 19V) External Battery Charger for iPad Air, Mini, iPhone 6, 5S, 5C, 5, 4S, S
  • Only 1 usb port. But it is high quality. I could be the best if it has 3-4 usb since the power is 20000 mah
  • 2014-10-06
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Customer FAQ

Q1.  Can I use a different USB cable rather than the cable that comes with the 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 Astro Pro2 20000mAh external battery take to be fully charged?
It takes around 6-7 hours to fully charge the battery with the included AC adapter.
Q3.  What can I do if I lose the provided accessories?
If you don't have an original cable or spares that you can use then please contact us via email at support@ianker.com for help.
Q4.  What devices are compatible with the Astro Pro2 20000mAh external battery?
The battery is compatible with Android, Apple or other devices (including some laptops). The DC port has a max output of 19V/3A.
Q5.  Does the 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.
Q6.  Will the supplied Micro USB v2.0 connector 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.
Q7.  How can I identify your 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

Or you can email us at support@ianker.com with the part number of the original charger that came with your laptop for help.
Q8.  What's the output efficiency of the 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.
Q9.  Can the Astro Pro2 20000mAh external battery charge other devices while it is being charged?
Yes.
Q10.  Can the Astro Pro2 20000mAh external battery charge multiple devices simultaneously?
Yes, it can charge two devices simultaneously, one using the DC output port and one using the USB output port.
Q11.  What do the LEDs indicate when the Astro Pro2 20000mAh external battery is charging itself or other devices?
When the battery is charging your devices, the LED indicator will remain unlit when charging other device. When the battery is being charged, the lights will flash repeatedly one by one to indicate progress. The LED indicator will all remain lit when the Astro Pro2 is fully charged.
Q12.  How long will the charge in the Astro Pro2 20000mAh external battery last without being used?
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.
Q13.  Can the Astro Pro2 20000mAh external battery be used for international travel?
Yes. However, you may need to use an universal convert to work with the power adapter since the provided power plug is special for the country it was originally shipped to.
Q14.  Can the Astro Pro2 20000mAh external battery be taken on board airplanes?
Yes, all Anker external batteries including the Astro Pro2 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.

This external battery (Anker's largest external battery) is with 74 wh which is lower than the above 100 wh limit.
Q15.  What should I do if the Astro Pro2 20000mAh external battery can not be charged?
a. Check that the AC adapter is connected securely.
b. Try a different power adapter (15-19V/1.3A, size:5.5*2.1mm) with the battery for double checking.
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 Astro Pro2 20000mAhexternal 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

12v auto shutoff override
I'd like to use this with a 12v device that cycles on and off. Is there a way to override the auto shutoff feature that is enabled if the device stops drawing a current for more than 50 seconds? 
Replies(0) Collapse Report as spam Oct 29, 2014 at 12:41 AM
Will it power a....
I have a Qumi Q5 projector.   The power supply is rated 19vdc @ 3.42 amps, but the manual says it draws a maximum 62 Watts.Does this battery have protection that would shut it off if more than 3amps are pulled?Regards,Nathan
Replies(0) Collapse Report as spam Oct 28, 2014 at 11:10 AM
Windows surface RT 2
hi, I bought this last year but I have chnged my device since. I was wondering if there was an attachment you have (that I could get seperately) that i could charge my Windows surface 2 (RT) with? thanks, Zacch
Replies(0) Collapse Report as spam Oct 18, 2014 at 10:11 PM
How to defeat the auto shut off?
I use the Anker Pro2 LION battery to power a small radio transciever. The radio draws such little current while idling, that it fools the battery auto shut off, and my radio powers off when the battery shuts off. Otherwise, the battery performs flawlessly. Is there a way to defeat the auto shut off? Thanks!
Replies(3) Collapse Report as spam Oct 18, 2014 at 8:46 AM
Justin Rohr
The reason auto-shut off is there is to keep from overcharging and holding a battery at 100% which is bad. The only way would be to cause the battery to draw more current, such as charging a phone, but then you loose how long you can power the radio.Is there a way to keep your radio from idling?
Reply Report as spam Oct 18, 2014 at 7:24 PM
gherardini
We have this same problem in cars with light check systems when we replace the incandescent bulbs with LEDs, the system doesn't read the draw of the resistance of the LED so it fails the light check. The "fix" oftentimes is to put a small incandescent bulb hidden in the trunk compartment. Can you do the same thing? Put soemthing else in line that makes a continuous draw that would keep the battery charging but not wear it down too quickly?
Reply Report as spam Oct 28, 2014 at 12:20 PM
gherardini
We have this same problem in cars with light check systems when we replace the incandescent bulbs with LEDs, the system doesn't read the draw of the resistance of the LED so it fails the light check. The "fix" oftentimes is to put a small incandescent bulb hidden in the trunk compartment. Can you do the same thing? Put soemthing else in line that makes a continuous draw that would keep the battery charging but not wear it down too quickly?
Reply Report as spam Oct 28, 2014 at 12:21 PM
Charging amperage
Trying to use this with a solar panel with an output of "DC:18V*770mA /USB:5V*2.1A."Is that amperage too low or will it work (just slower than normal)?
Replies(2) Collapse Report as spam Oct 8, 2014 at 2:24 PM
Elliott
I asked this several times under a posting with the heading "Anker chargin" but have been ignored for weeks.
Reply Report as spam Oct 8, 2014 at 2:25 PM
ANKER Team


The Astro Pro2 needs an input of 15-19V/1.3A DC.

If the device you're using can supply that then the Pro2 will charge just fine.
Reply Report as spam Oct 8, 2014 at 9:30 PM
Simon C
Hi,Will this power bank power a telescope with an AZ Goto mount and for approximately how long?The power requirements are, tip positive with 11v to 15v (say nominally 12v), 1amp supply. I look forward to your reply.Kind regardsSimon C
Replies(1) Collapse Report as spam Oct 4, 2014 at 3:19 AM
ANKER Team


Yes, this should work fine.

It is worth remembering that if the power draw from the battery goes below 0.05A for more than around 50 seconds then the Astro will switch itself off.
Reply Report as spam Oct 5, 2014 at 9:00 PM
Work with Sony Vaio svt131a11m ?
As per the title, the only two issues i see is that 1. there isn't the correct laptop connector pin size. I believe the size i need is 6.5x4.4, do you supply this? And 2. i believe the voltage for the battery it 19.5. So with the correct connector will it charge?  Thanks Sam
Replies(2) Collapse Report as spam Sep 29, 2014 at 8:36 AM
ANKER Team


The max output of the Pro2 is 19V so it probably won't work with your laptop unfortunately.
Reply Report as spam Sep 29, 2014 at 10:00 PM
Sam May
Quote From ANKER Team: Thanks for the reply, if i were to still purchase this do you have the correct connector pin size or my laptop?
Reply Report as spam Sep 30, 2014 at 5:58 AM
Anker chargin
Can I charge pack this via USB? If not, what are the specs for charging? I am looking at using this with portable solar panels.
Replies(7) Collapse Report as spam Sep 24, 2014 at 7:14 PM
Elliott
Quote From ANKER Team: Still no answer to this...
Reply Report as spam Oct 2, 2014 at 5:45 PM
Elliott
It's been weeks - is anyone seeing this??
Reply Report as spam Oct 7, 2014 at 7:22 PM
Elliott
I'd like to use this with your Anker 14W panels, but they only have USB outputs.
Reply Report as spam Sep 24, 2014 at 7:17 PM
Elliott
This is the link for your panel on Amazon: http://www.amazon.com/gp/product/B00E3OL5U8/ref=gno_cart_title_3?ie=UTF8&psc=1&smid=ATVPDKIKX0DERIf that doesn't work, will this battery pack be compatible with this panel? http://www.amazon.com/gp/product/B00G6C5NR6/ref=ox_sc_act_title_2?ie=UTF8&psc=1&smid=A18M12GR6V2Z8F
Reply Report as spam Sep 24, 2014 at 7:31 PM
ANKER Team


You can't charge it from our solar chargers as they don't have the required output.

You'll be able to charge it with anything that can deliver DC current at 15-19V/1.3A.
Reply Report as spam Sep 24, 2014 at 9:00 PM
Elliott
The second panel (sadly not your brand) has this output:Output: DC:18V*770mA /USB:5V*2.1A.Is that amperage too low or will it work (just slower than normal)?
Reply Report as spam Sep 25, 2014 at 2:15 PM
Elliott
Quote From ANKER Team: Any change your could answer that amperage question?
Reply Report as spam Sep 26, 2014 at 5:39 PM
Anker Pro does not charge itself
I'm having an issue with my Anker 20000mah external battery. It does NOT charge ITSELF. Whenever I plug the device onto the wall, the LCD keeps blinking and displays a small icon that looks like a CD with a small arrow. I tried leaving it and coming back a day later but it did not work. It's still 00%. 
Replies(1) Collapse Report as spam Sep 23, 2014 at 12:00 AM
ANKER Team


It sounds like it might be playing up.

Please have another go with a different AC charger if you have one available and see if that helps. Either way, get in touch with our customer service guys at support@ianker.com and let them know, they'll replace anything that is defective.
Reply Report as spam Sep 23, 2014 at 9:00 PM
Mr. Darrin
I just purchased the Anker Astor Pro2 2nd Gen 20000 mAh.  Is there a tip for the laptop HP pavilion dv7t-5000?
Replies(1) Collapse Report as spam Sep 18, 2014 at 2:44 PM
ANKER Team


The 2nd Gen Pro doesn't come with any adapters but the 1st Gen does. You can find them all on their Amazon listings.

Both of them have a DC output size of 5.5*2.5mm though so if it doesn't have the right adapter you should be able to find one online.
Reply Report as spam Sep 18, 2014 at 10:30 PM
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