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Anker Astro Pro2 20000mAh Multi-Voltage External Battery

Anker Astro Pro2 20000mAh Multi-Voltage External Battery

60W wall charger - product

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

AmazonAddict
  • TOP NOTCH customer service, works pretty well with MacBook Pro 15"
  • First off, let's say this: I really put Anker's customer service to the test, and they were UNBELIEVABLE; way beyond the call of duty. So five stars for that! I wanted to post an actual review of this battery in use with a MacBook Pro 15", mid-2012. This is my second Anker battery and it's behaving pretty much as the first one did until I made an error that I don't think is mentioned in the manual: Don't plug the wall power adapter in to this battery while the battery is plugged into your computer. The battery stopped working as soon as I did that (this is not a pass-through battery/charger). Alright? Alright. Here's the deal with the MBPro: Anker will tell you that this battery is not suited for that machine, since it draws just a bit too much amperage from the battery. So THEY will tell you not to buy this for the MBPro. However, I did anyway and find that the Anker actually works pretty well if you set it to 16 volts, which lets it put out more amperage (I tried this because I know we can use, for example, the smaller Macbook Air power supply to charge the MBPro; it just works considerably slower) than it would at the 19 volt setting. The Anker gets quite hot in this use, but it will charge my internal battery at least 50% while running the machine for more than an hour. So it ends up giving me about an additional 2.5 to 3 hours worth of running time (one hour running on the battery plus more than half a battery's worth of charge to run on after thebattery is exhausted). This is my third attempt at an external Mac battery; the first two pooped out pretty quickly, just stopped working, and the customer service on them was awful. I do a lot of international flights with no power in the seats, so this is a very nice bump in my productivity. And there you have it! I bought an adapter cable to go from the barrel connector on the Anker to my MagSafe 1 connector (I think this was around $8), and I am in business. In any case, Anker will take very good care of you, which is a truly pleasant shock in the world of very flaky external-Mac-battery makers!
  • 2015-08-02

Al Hernandez
  • Can also recharge laptops/notebooks!
  • Took me a bit of a search to find a backup battery that could also charge my little acer notebook. Includes adapters for usb accessories and for notebook/laptops which was a bonus selling factor for me as some sell separately. Good built and nice brushed aluminum finish. If you only charge phones and little accessories it lasts for days. If I charge my laptop from ~10% to full I can do it about 3 times. I also like how you press a button to check how much charge is left and its the same button to initialize charging.
  • 2015-07-29

Susan Beth Kramer
  • like one should to charge it
  • Apparently, when it is in the SUN doing its job of collecting and storing the energy....it heats up just a little too much, I think externally initially. It begins to spit on and off with its job of charging. I had it in a solar charger's bag, like one should to charge it. I had two of these. And they both were acting the same way. It was only 85 degrees outside. But in the sun, I do not know the actual temp. At any rate, it cut my trip short by a few hundred miles due to me worrying if I could recharge my GPS and white head lights on my bicycle.
  • 2015-07-27

Nick "Nick"
  • Pretty heavy
  • Much heavier than expected.
  • 2015-07-27

Terminator
  • Awesome backup battery, reliable, slim and long lasting charge
  • I have been using this for more than one and half year and it never failed me in charging laptops or phones or tablets. My son plays on his galaxy tablet for hours together while plugged into this device and it still manages to charge it while delivering power. Totally awesome, slim and clean looking device. Had no problems with air travel/TSA or carrying in backpack when hiking or camping. Couple of minor things 1) Wish it had a discharge indicator when a device is plugged in 2) The AC adapter has a removable plugin tip for international travel and started sliding off when unplugging from wall causing a shock hazard, I am planning to super glue it since I don't travel international that often.
  • 2015-07-25
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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 external batteries with a capacity lower than 27027mAh (100 Watt Hours) can legally and safely be taken on board airplanes. To calculate a battery's capacity in Watt Hours: (Battery Capacity(mAh)*3.7)/1000.

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.
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

Compatibility with HP ENVY 15-j011dx

Hi! 

I was wondering if this item is compatible with the HP ENVY 15-j011dx -- and if so, which connector tip would work for the laptop. 

Thanks very much.

Replies(1) Collapse Report as spam Jul 28, 2015 at 6:03 PM
Gabrielkbkim

please contact support@ianker.com for the inquiry

Reply Report as spam Jul 29, 2015 at 6:52 AM
DC out port size
What is the size of the DC out connector on this battery?
Replies(2) Collapse Report as spam Jul 26, 2015 at 8:52 PM
ANKER Team
The DC out connector's tip size is 5.5 x 2.1mm if you use the provided cable. If you'd like to connect your own cable to the output port directly then you will need a 5.5 x 2.5mm connector.
Reply Report as spam Aug 4, 2015 at 12:00 AM
Gabrielkbkim

READ THE ABOVE DISCRIPTION WHICH SAYS

Output USB output: 5V, 2A; DC output: 12V / 4A, 16V / 3.5A or 19V / 3A

Input 15-19V / 1.3A

 

Reply Report as spam Jul 29, 2015 at 6:51 AM
Led turn on

I am using Anker Astro Pro2 (79AN20L).

I realise the led is lit if i leave the cable attached no doubt the cable is not connected to any device for charging.

Is the battery draining power when leave in this configuration ?

Is there any way I can leave the cable attached without turning on the led and charging capability?

Its very troublesome if i have to always remove the cable to off the battery pack.

It would be best if it function like normal external battery when the charging and led will only kick in only when a device is connected for charging.

Please advise.

Replies(2) Collapse Report as spam Jul 22, 2015 at 7:55 AM
ANKER Team
Thanks for contacting us! Please try whether this problem also comes up if you are using another cable. If your are still experiencing problems please contact our friendly service team at support@ianker.com and they will help you out.
Reply Report as spam Jul 26, 2015 at 9:00 PM
Gabrielkbkim

contact support@ianker.com 

Reply Report as spam Jul 29, 2015 at 6:50 AM
Anker Batterties w/ DC output:

Few questions: 

1. is there a way to stop the DC output battery from going to 'sleep' when plugged into a source that needs constant power.  We have the DC output going to a set of LED's however when you turn off the LED's the battery stops sending power even when LED's are turned on again.

2.  Is there another batthery that you sell which has DC output from 14v-19v? 

Thanks, Brandon 

 

Replies(2) Collapse Report as spam Jul 1, 2015 at 11:08 AM
ANKER Team
Thanks for taking an interest in this battery! Here are the answers for your questions:

1. The device connected to the DC output needs to draw at least 80mA to keep it working. It is possible that the LEDs draw less energy and will therefore cause the Astro Pro to turn off.

2. Unfortunately, we only sell this one model with an output higher than 12V.
Reply Report as spam Jul 2, 2015 at 3:30 AM
Gabrielkbkim

Anker should make another big power bank with 20V output 

Reply Report as spam Jul 2, 2015 at 7:37 AM
I lost my connector tip sizes

Hi, I have the anke pro2 2000mah, however, I don't have the connector tip sizes. Could you please tell me where I can get the replacements?

 

Thank you for your help in advance

 

Regards

Replies(3) Collapse Report as spam Jun 26, 2015 at 9:57 AM
MikeC

try support@anker.com they'll help you out.

Reply Report as spam Jun 26, 2015 at 1:11 PM
Gabrielkbkim

Contact support@ianekr.com they will send you replacement with fee 

Reply Report as spam Jun 26, 2015 at 9:46 PM
ANKER Team
Sorry to hear that you lost some of the connectors. Please let our friendly support know and they will help you get a replacement: support@ianker.com
Reply Report as spam Jun 29, 2015 at 4:30 AM
What is the warranty for the device?

I wonder what would be the warranty for this battery? And I need to know how many cycles charge\discharge this battery is rated at? I thank you in advance!

Replies(3) Collapse Report as spam Jun 18, 2015 at 3:03 PM
galaxytechreview

I beleive it is 18 months, like most of Anker's products. Most lion batts have at least a 500 charge/discharge cycle.

Reply Report as spam Jul 19, 2015 at 8:31 PM
Gabrielkbkim

http://www.ianker.com/Warranty.html

and it will last really long because it uses Li-ion battery 

Reply Report as spam Jun 18, 2015 at 7:07 PM
ANKER Team
The warranty period is 18 months for external batteries. In general, the lifetime of battery cells is 300-500 cycles.
Reply Report as spam Jun 18, 2015 at 9:30 PM
Carrying Case

Hi, where can I buy a case like the one shown on this page? Thank you for your time and consideration. V/R, Roger

Replies(5) Collapse Report as spam Jun 17, 2015 at 7:34 PM
rmscholbe

I did and I will call tomorrow. Thank you for the prompt response!

Reply Report as spam Jun 17, 2015 at 10:04 PM
Gabrielkbkim

did you purchase one of this device? 

If yes contact 1-800-988-7973 (US) Mon-Fri 9am-5pm (PST) support@ianker.com

Reply Report as spam Jun 17, 2015 at 8:13 PM
rmscholbe

Is anyone working today? I have been listening to music for 35 minutes after dialing the number you posted and pressing 2.

Reply Report as spam Jun 18, 2015 at 11:35 AM
Gabrielkbkim

Quote From rmscholbe: they should be i think they are busy or having meeting

Reply Report as spam Jun 18, 2015 at 6:35 PM
ANKER Team
We are very sorry for the long waiting time and will have a look at what happened internally. Regarding your question about the bag, unfortunately we are not able to offer it as we bought it overseas.
Reply Report as spam Jun 18, 2015 at 9:30 PM
question
I will want to buy this products in huge quantities please send me your price for the power bank.
Replies(2) Collapse Report as spam Jun 9, 2015 at 11:12 AM
Gabrielkbkim

Welcome to Anker Family contact VIP-support@ianker.com

 

Reply Report as spam Jun 9, 2015 at 6:09 PM
MikeC

Or contact marketing@ianker.com

Reply Report as spam Jun 10, 2015 at 9:42 AM
polarity

What is the DC output polarity? (positive on the inside or the outside)?

Thank you.

Replies(3) Collapse Report as spam Jun 5, 2015 at 1:55 AM
MikeC

USB output: 5V, 2A; DC

Reply Report as spam Jun 5, 2015 at 5:43 AM
Gabrielkbkim

USB output: 5V, 2A; DC output: 12V / 4A, 16V / 3.5A or 19V / 3A 

Reply Report as spam Jun 5, 2015 at 11:25 AM
MikeC

The positive is on the outside

Reply Report as spam Jun 5, 2015 at 3:50 PM
Dell Inspiron 7348 Tip Size

Can I use this "Anker Astro Pro2 20000mAh Multi-Voltage External Battery" fot Dell Inspiron 7348 laptop? Thanks!

Replies(4) Collapse Report as spam Jun 2, 2015 at 5:51 PM
epicwoo

What does it way on your power supply next to "Output?" The most common models in the Dell 7000 series have an output of 19.5 Volts and 3.3 Amps, so I would think as long as you had it set for 19 Volts, you should be fine.

Reply Report as spam Jun 2, 2015 at 8:28 PM
Gabrielkbkim

yes it will work at 19V / 3A

Reply Report as spam Jun 2, 2015 at 9:34 PM
dongjuncho

I'm wondering about the tip size. Mine looks like OD=4.5mm & ID=3.0mm and I can't see anything like this in your included tip sizes.

Reply Report as spam Jun 2, 2015 at 9:41 PM
ANKER Team
Unfortunately, we can not provide other adapters. However, you can but them online. Our cable end is the size of 5.5 x 2.1mm.
Reply Report as spam Jun 3, 2015 at 3:00 AM
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