- Size (LWH): 2.56 inches, 4.17 inches, 0.98 inches
- Weight: 8.8 ounces
Anker® 2nd Gen Astro2 9000mAh High Speed 3A Portable External Battery Charger with PowerIQ™ Technology for Smartphones, Tablets and More (Black)
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- The Anker Advantage: Join the 10 million+ powered by Amazon's #1 charging brand.
- Exclusive PowerIQ Technology: Detects your device to deliver its fastest possible charge speed up to 3 amps per port or through two ports.
- Ultra-High Capacity: Charges the iPad mini one and a half times, the Galaxy S5 two and a half times, the iPhone 6 almost four times and other smartphones multiple times. Recharges in 7-8 hours with 1.2 amp adapter (not included) and the included Micr
- Superior Quality: Premium LG cells, cutting-edge circuitry and a sturdy drop-tested exterior ensure durability and safety. Shake to start a charge or check the power level.
- What You Get: Anker 2nd Generation Astro2 Portable Charger External Battery Power Bank, Micro USB cable, travel pouch, welcome guide, our fan-favorite 18-month warranty and friendly customer service.
High-Quality External Battery Packs from AmazonBasics
Safely charge your smartphone or tablet with a portable battery pack from AmazonBasics with power overload protection. Shop now.
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Top Customer Reviews
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It is a great power resource to keep your USB recharged devices operating on those long work or school days or while you are traveling. This battery pack is a powerful source of power and many people like me are power users of their smart phones and tablets and need a battery like this. If you are constantly using your phone or tablet then you know that they will run out of power sometime during the day or evening. If you are not near an AC wall outlet with your charger or in your car with a charger what can you do? It is especially important to have some way to recharge if you are traveling in a plane, in the middle of a school classroom or on a bus or train. In addition many of the newer tablets are real power hungry devices and it takes a lot to recharge them.
Here is a powerful battery pack with two USB ports. It can charge your tablet devices or charge your smart phone and if you want it can do both of them simultaneously. I charged two iPhones at the same time in my testing. One Smart USB output port is rated at 5 VDC and 2.4 Amps and the other one is rated at 5 VDC and 3 Amps. It uses Lithium-Ion battery technology and carries a 9000 mAh capacity.Read more ›
After looking at all sorts of batteries and reviews on Amazon I decided to call Anker's customer service number to try to get a recommendation. I wasn't expecting much, but was very pleasantly surprised when I reached a U.S. based customer service representative who was extremely helpful. She discussed the pros and cons of the various models I was considering, and wound up recommending the Astro2. About a week after my purchase I even received a follow-up e-mail from Anker letting me know that they are always available to provide support which just capped off a level of customer service that is rare today.
The battery itself appears to be very well made. It has a nice rubberized coating and comes in a padded mesh bag. The included micro USB cable and 30 pin adapter work well with my iPhone 4s, but those with Lightning devices will have to use their own cable. It is a about the diameter of a pack of cards but a little thicker, and has no buttons. The led charge indicator is not visible unless you shake the battery to wake it up, and is in the form of a segmented ring. All in all I like the design very much.
I would recommend this to someone with needs similar to mine, or would recommend other Anker models to those with different external battery needs based upon the quality of the products as well as customer support.
update, customer service has contacted me and has exchanged via a free new Anker without the sensor motion feature, After their concern on their part in making me happy i was quite surprised at how much they went out of their way to make things right, now if more companies cared enough to actually reach out to their customers like Anker has done,shopping would be so much better, having a company that actually cares means they have a customer for life, NICE JOB CUSTOMER SUPPORT!!!
Many hotels still don't have convenient plugins by the bedside table. Rather than running an extension chord or leaving my phone or tablet where I can't reach them, I just plug them into my Anker external battery overnight. Then I charge the Anker while I'm out during the day. It will easily charge both my Nook HD+ tablet and iPhone with enough power left for maybe a couple more phone charges or one more tablet charge, though I usually recharge it. My wife has an older Anker charger for her phone and it also works great. I just bought our daughter the 12000mA version. I remember walking around Chicago as a tourist last summer with my wife's Anker in my pocket charging my cell phone. There was certainly a bulge to my pocket, but I could stay in contact with my wife and daughter when we were apart. And, after all, I was a tourist.
I would recommend this for anyone with a cell phone or tablet. They're great.
Most Recent Customer Reviews
Great battery backup for your phones, tablets and music players, etc. Especially if you travel, you don't want to have to sit on the floor at an airport - you know you don't.Published 1 month ago by Mike - IL
Holds it's charge forever. I used it while hiking the Inca Trail to Machu Picchu for four days. Didn't even drain to half and was able to charge my iPhone every day so that I could... Read morePublished 2 months ago by Susan D. Harper
This was really cool and kept my phone charged many times until I lost it at a concert.Published 2 months ago by Corey Orton
I absolutely love this battery pack, I take it almost everywhere with me and it has saved my on multiple occasions. Read morePublished 2 months ago by eamonn
My old standby. I keep it on hand as a backup for my 14000mAH Anker, but I never need it. Always end up lending it out. These sell themselves at Ingress anomalies.Published 3 months ago by Tim Breitberg