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Anker® 2nd Gen Astro Pro2 20000mAh Multi-Voltage (5V 9V 12V) 4-Port Portable Power Bank Pack External Battery USB Charger with PowerIQ™ Technology for iPhone 6 5S 5C 5 4S, iPads, Galaxy S5 S4 S3, Note 4 3, Tab, PS Vita, Gopro and more

4.7 out of 5 stars 145 customer reviews
| 10 answered questions

Currently unavailable.
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Product Information

Technical Details
Item Weight508 g
Product Dimensions16.8 x 11.3 x 1.7 cm
Item model numberAK-79UN5V2-B16P100A
Weight510 grams
  
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Customer Reviews

4.7 out of 5 stars
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Top Customer Reviews

Verified Purchase
Great for those weekends away when power is not available (camping, off-gridding, etc), or for emergency during power out. Left uncharged for weeks and was surprised that it still held quite a bit of power. Very happy with this purchase.
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Verified Purchase
its solid and holds charge, but only can be charged from its own adapter AC. i wanted to charge it from solar charges from the same company using USB port as input..

update: Anker contacted me and offered a free power bank that can be charged using 5v USB so i can use it to charge IPAD. Surprise that their small power bank can offer 2A to charge IPAD. Great customer support and excellent products.
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Verified Purchase
It's a lot bigger than I was expecting, but the design is nice and it's high quality construction. Doesn't charge my phone at 2A like I had hoped but it's quick enough.

Only downside is that you CAN'T charge it via USB AT ALL. All the other batteries like this I've had charged over USB. Used this one once before I lost the power adapter, so now I have to go and spend another $30+ on another power adapter. They say it's to charge it faster, which is fair enough, but to not have ANY USB charging at all is a disappointment.
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By AK on Aug. 27 2014
Verified Purchase
This portable charger is absolutely amazing!!! It charges all items very quickly and the battery life lasts forever! It automatically powers off when the item is fully charged, so you don’t have to worry about it using extra power for no reason. It is very well built and is amazing for those that like to camp without electricity. Highly recommended!!!
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We have been using the Anker power packs, (we have 2 Anker packs), as backup for our GPS survey equipment and survey data collectors for about 8 months now using the 12 volt output ports on the Anker. Our GPS system comes with 2 internal lithium batteries. However, when we have to do a static precise GPS position the observation time can be as long as 3.5 hours. We generally do other work away from the GPS unit and by the time we are able to return to the unit the internal battery has died and we had to start over again. With the Anker power pack we can set the GPS unit up, plug in the Anker and it will run all day if necessary. Great solution to our problem.

I took one unit to Cuba last winter and since we forgot our voltage converter the Anker provided a charge for our Ipad and iphone using the USB ports. A great product.
Brent...Ontario, Canada
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Verified Purchase
Awesome! The multi-voltage was the drawing card for me. I spend a lot of time in the isolated outdoors where there is no power available and this is one unit is so handy to keep my phone charged up as well as my other "gadgets" I carry with me. It recharges items quickly and efficiently. It is lightweight and easily packed into my backpack. I am planning to take this on vacation overseas as well to keep all my items powered. Would I buy another - yes.
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Verified Purchase
I bought this battery for a month long motorcycle trip to recharge 2 smartphones, 2 Sena motorcycle headsets and a camera. Anker's customer service is top notch. My first enquiry was about a 12 volt charger for the battery to be able to charge it while riding. It did not come with one but Anker assured me if the voltages and amps were within spec it would work. I found a proper 12 volt car charger on Amazon and now I can stay off the electrical grid while riding for my trip.
The second issue raised by others here was the fact the Sena headsets would not charge. My enquiry to Anker customer service confirmed my suspicions that the Sena's draw so little power that the battery cannot detect and goes to sleep. My simple solution is to always charge my Sena's along with my camera and that works perfectly!
Nice robust unit. Now that I have it I find many uses for it like using it at home with my IPad if it is running low on my deck etc.
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Verified Purchase
I love this product!!!!! I can now charge my iphone 6 plus 3 times over! My old Mophie 6000 mAh battery pack has nothing on Anker's 20,000 mAh multi-voltage battery pack! Plus this product has great value for the amount of mAh I get. I would pay $89.99 any day compared to the $99.99 I paid for my Mophie 3-4 yrs ago, which by the way is still the same price today.

One more thing I love about the Anker 2nd Gen Astro Pro2 is that I can FINALLY charge my PS Vita without having to use/buy the Sony proprietary battery pack! I would recommend this product to anyone who wants to good quality, excellent value item.

The only downside to this product is that it's a bit big and heavy to carry around but may I remind you, your are also getting at least 2 - 3 times more battery power than a smaller more compact battery pack!
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