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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

Chris Schaak
  • Charges my TDK A33 bluetooth speaker & ASUS tablet with car cigarette adaptersThis review is from: Anker® Astro Pro2 20000mAh Multi-Voltage (5V 12V 16V 19V) External Battery Charger for iPad Air, Mini
  • I bought this for camping and while at cabin. It charges my TDK A33 bluetooth speaker via supplied 12V plug directly from Anker to TDK no problem. My ASUS TF700 tablet also will charge via 12V plug, but you need to buy car charger for ASUS and car charger female socket adapter. It also charges other devices via USB. I want to get a portable solar panel to charge Anker for in the field use eventually. Huge battery capacity (20,000mAh).
  • 2014-08-30

D. Grieco Jr.
  • Powerful Battery!!!Verified 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 Galaxy
  • If you have room in your bag, and you don't mind the weight, then this is a great external battery. I use it to keep my cellphone and tablet computer going when I can't get to an outlet (airports, flights, car, etc). It does take a while to fully charge, but I do that overnight so it's not much of an issue. It comes with a variety of adapters, but not for my Surface Pro tablet (I had to buy that after-market).
  • 2014-08-27

Brian W Hokkanen
  • Great, solid battery for powering a variety of laptops and mobile devicesVerified PurchaseThis review is from: Anker® Astro Pro2 20000mAh Multi-Voltage (5V 12V 16V 19V) External Battery Charger for iP
  • This battery is great. A little bulkier than the 2nd Gen Astro Pro 2, but you get much higher Amp output at higher voltages which makes this perfect for powering laptops. If all you need is a mobile power pack for 5V USB mobile devices, the 2nd Gen is likely a better more compact option for your needs. For most laptops, this original Astro Pro 2 is great. I use this frequently to power a surface pro 3 on the go, with a hand modified charging cable like the one available from Mikegyver.
  • 2014-08-27

Archangels
  • Awesome Backup Battery
  • This is a great product.Small and lightweightIt can give a my 15" ASUS or my 17" MSI laptop fully charge.I did have to buy a 5.5 x 2.5mm DC Power converter.I intend to use this with my 20W solar panel.
  • 2014-08-24

Paul J
  • Power unlimited!
  • These other little chargers don't even compare. Super Charger!
  • 2014-08-23
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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 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).

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Latest Post

Astro Pro2 for HP EliteBook 8470p
Hello, I bougth a Astro Pro2, and the connector doens't fit to the power adaptor input.It is very close to 7.40x5.00 J connector, but the inner pin of connector is bigger in diameter than the Laptop input.Do you have any solution ?Regards.Masaaki (from Brazil)
Replies(0) Collapse Report as spam Sep 1, 2014 at 12:37 PM
Dan
I just bought a 2015 15 inch Mac Book Pro.  The charger is a Mag safe 85 watts power adapter.  Will the Astro Pro2 20000mAh Multi-Voltage External Battery rsecharge m laptop?
Replies(1) Collapse Report as spam Aug 30, 2014 at 12:28 PM
ANKER Team


The max output of the 2nd Gen Pro2 is 57W so this probably won't be enough to charge the 1st Gen Pro2.
Reply Report as spam Sep 1, 2014 at 2:30 AM
AStro Pro 2 20000mah for Samsung Tab 4
Is the Astro Pro2 20000mah compatible with the samsung tab 4, 7 inch device?
Replies(1) Collapse Report as spam Aug 29, 2014 at 9:04 AM
ANKER Team


Yes, it is compatible.
Reply Report as spam Sep 1, 2014 at 12:30 AM
Will it work on Galaxy Tab 4
Hi, is this product compatible with the samsung galaxy tab 4 7 inch tablet? I am a bit confuse also why it also looks like the intocircuit product with 26000 mAh? please explain.
Replies(1) Collapse Report as spam Aug 28, 2014 at 3:36 PM
ANKER Team


Yes it should charge your tablet fine.

With external batteries being such a crowded market it's difficult to keep control of every design and ensure that designs aren't copied or imitated.
Reply Report as spam Aug 31, 2014 at 10:30 PM
astro pro2 for HP folio 9470m
when i plug in (with connector "J") the astro pro2 (19V) it don't charge my notebook !my notebook HP folio9470m  need 19,5V & 2,31A !do you know if i can use any setup to use the pro2 for this notebook or must i "send it back" :-(thank's
Replies(1) Collapse Report as spam Aug 20, 2014 at 5:48 AM
ANKER Team


The max output of the 1st Gen Pro2 is 19V/3A so it looks like it may be a little low to charge your notebook.
Reply Report as spam Aug 20, 2014 at 10:00 PM
19V limited to 3A?
I see in the specs tha this maxes out at 3.5A, but it also says 19V/3A.  My laptop is 19V / 3.42A, will it work?Also why doesn't the new version go to 19V, and maxes out at 12V?
Replies(1) Collapse Report as spam Aug 17, 2014 at 6:29 AM
ANKER Team


The max amperage output depends on which voltage setting you're using the Pro at, at 19V it's 3A.

We decided to reduce the power output but concentrate on improving other aspects of the battery, ie more USB ports, power indicator, smaller and more efficient.
Reply Report as spam Aug 18, 2014 at 3:00 AM
Comparison to Sony Vaio sheet battery
Sony slate battery deliverys  4690 mAh with an ouput voltage of 7.5 V   http://store.sony.com/vaio-pro-sheet-battery-zid27-VGPBPSE38/cat-27-catid-All-Computers-Batteries-PowerThe Anker Astro Pro2 is at 20000 mah is it safe to presume that it will provide more than 4x the power?cheers-A
Replies(1) Collapse Report as spam Aug 16, 2014 at 1:05 AM
ANKER Team


Since the output of Sony battery goes directly into the laptop via a proprietary system we can't guarantee a performance comparison.

The Astro Pro would go in via the DC charging port so efficiency levels may be quite different.

If you need any further help then give our customer service guys a shout at support@ianker and they'll be able to answer any questions you have.
Reply Report as spam Aug 17, 2014 at 11:00 PM
Surface Pro 2
Assume this is first generation.  Still have a question regarding adapter for Surface Pro 2.
Replies(1) Collapse Report as spam Aug 9, 2014 at 7:19 AM
ANKER Team


The max output of the 1st Gen Pro2 is 19V/3A so if this is higher than or equal to the Surface's original charger then it'll work fine.
Reply Report as spam Aug 11, 2014 at 1:00 AM
Compatibility with Vivitek Qumi Q5?
Hi Anker, I own a Vivitek Qumi Q5 video projector (http://www.vivitekusa.com/productdetail.php?product_id=75).  Just curious to see if the Anker Astro Pro2 20000mAh is compatible (right connections) with the Qumi Q5? Thanks!
Replies(1) Collapse Report as spam Aug 1, 2014 at 4:02 PM
ANKER Team


The list of adapters and outputs that are supplied with the Pro2 are listed on this page as well as our Amazon listings.

You'll need to confirm that the projector's input requirement does not go above 19V/3A as well as this is the max output of the 1st Gen Pro2. If it doesn't then you should be good to go!
Reply Report as spam Aug 4, 2014 at 12:00 AM
Type of Battery??
What type of battery would best describe the Astro Pro2? Dry cell...Lithium Ion? I would greatly appreciate your feedback.
Replies(2) Collapse Report as spam Jul 31, 2014 at 8:40 AM
ANKER Team


It's a li-polymer battery.
Reply Report as spam Aug 1, 2014 at 12:00 AM
Andy Faulkner
The battery is lithium polymer 
Reply Report as spam Jul 31, 2014 at 9:38 AM
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