Anker® Astro is a line of portable external batteries designed for our modern mobile age. High capacity power and compact designs make these batteries a reliable power companion on the go. With affordable prices and great Anker customer service, never get stranded without power again.
Thanks to our customers, Anker has 5 products listed in the top 10 of Amazon's top-rated Cell Phone Batteries category.
Popular Compatible Models:
Apple: iPhone 5 / iPhone 4S, 4, 3GS / iPod (Use your original Apple Lightning to USB cable for iPhone 5)
HTC: One X, S, V / Sensation, Sensation XE XL / EVO 4G / Radar 4G / Inspire 4G / Vivid 4G / Wildfire S / ThunderBolt / Incredible 2 S / Rezound / Desire X, C, V, HD, S, Z
Samsung: Galaxy S3 / Galaxy Note 2 / Galaxy S2 I9100 / Galaxy S I9000 / Verizon Galaxy S3 I535 / AT&T Galaxy S3 I747 / Sprint Galaxy S3 L710 / T-Mobile Galaxy S3 T999 / T-Mobile Galaxy S2 T989 / AT&T Galaxy S2 I777 / AT&T Galaxy S2 Skyrocket SGH-I727 / Galaxy Nexus / Galaxy Note / Focus S / Infuse
Motorola: Droid Razr, Bionic / Atrix 2 / Triumph
LG: Nexus 4, Optimus 4X, 2X, V, S, T, 3D, 7
Nokia: Lumia 920 900 710 800 / N8 / N9
Others: Blackberry Torch Curve 9900 9360 9320 / Sony Ericsson Xperia Arc S, X10 / PSP / Nook Color / MP3 MP4 MP5 / GoPro
Astro Mini Spec:
– Performance for iPhones: 100% battery life
– Input: 5V / 0.8A
– Input charging time: 4-5h via Standard USB or AC adapter (not included)
– Output: USB 5V 0.8A
– Compact "Lipstick" Size: 3.5 x 0.9 x 0.9 inches; Weight: 2.7 ounce
– 18 months warranty
Technical Details
Stylish, mini, and light-weight design; Fits easily into any bag or pocket; Compact "Lipstick" Size: 3.50 x 0.91 x 0.91 inch
Capacity; Add 8 hours of talk time or one full charge to your iPhone 4 / 4S / 3G / 3GS; Add 80+ hours of audio playback or a full charge to the battery life of most mobile phone.
Samsung Grade A cell and premium microchips ensure high quality; LED indicator with two colors to indicate the charging and discharging process
Weight: 2.7 ounces; Input: 5V 0.8A; Output: USB DC 5V 0.8A; Input charging time: 4-5 hours via USB or AC adapter (not included)
Package includes: 1 Anker External Battery, 1 USB power wire, 3 mobile phone connectors, 1 convenient travel pouch
Product Details
Product Dimensions: 3.8 x 0.9 x 0.9 inches ; 2.7 ounces
Shipping Weight: 4.5 ounces
ASIN: B005X1Y7I2
Item model number: AK-79UNLPSTK-B26A
Customer Reviews
Convenient small size. Nice back-up power for an iPhone
By HonestGuy
The Anker Astro Mini is a nice small back-up power supply to keep your power-hungry iPhone running. I ran a test with my iPhone 5 to see just how much juice you could expect.
I drained my iPhone 5 down to 10%, then used the Astro mini to recharge it to 100%. The Astro still had some charge, so I drained my iPhone 5 down to 10% again, then used the Astro mini to recharge. This time I only got back to 40% charged before the Astro was done.
The way I look at it, you can get ~1.2 full iPhone 5 charges from one Astro charge. Not bad and just what I needed to keep running thru a long day.
I recharged the Astro from my computer USB port. It took ~ 6 hours to fully recharge (charging light turned off). It might charge a little faster with a plug-in charger, but you should plan on 6 hours (or overnight) to fully recharge.
The instructions are simple and the carrying bag is fine. There are a number of adapters for included charging cord. Unfortunately, the iPhone 5 “lightning” connector is not one of them. If the lightning connector was included, it would be a 5 star.
iPhone low battery no longer a problem.
By Dave Tyzo
I’m a UPS driver working very long hours and stream music and talk radio from my iPhone to my bluetooth headset to help me make it through these super long Christmas days. The problem was that my iPhone’s battery would run very low later in the day. This is no longer a problem thanks to Anker, I just hook my phone up to the Anker battery pack and let it charge my phone back up. Every couple of days I just connect the battery pack to the USB port on my computer, let it charge back up and I’m good to go for 2 or 3 more days. I like this product so much I bought one for my son for Christmas as well!
Didn’t think I would use it
By J. Ferguson
I bought it anyway and I’ve used it twice already. There’s been two nights when I’ve forgotten to plug the charger into my Nexus 4 and I had class at 8AM the next morning. My phone was almost dead, but all I had to do was bring the Astro Mini with me. Carrying them both around while the phone is charging is easy. I put the charger in my back pocket and phone in the front pocket, while still connected. The spiraled cord is long enough to allow you to use the phone while the charger remains in the back pocket. It gives my phone a full charge in about 2 hours.
Great product yet compact
By Kristy Lee
It works nicely, very compact for carrying around with the handsome travel pouch. Have not used the other attachments adapters that came with it yet, but it worked really well with my Samsung Galaxy S3 phone.
The instruction tiny leaflet can use a little improvement on the font size in print. I had to use a magnifying glass to read it. Maybe adding a small step to mention that the indicator light is also the power switch to turn on the battery discharge would be helpful too. Overall, this is a great light weight and compact juice pack for any mobile lifestyle.
Nice Charger
By A. Lin
This is an ideal battery for smaller devices like phones, mp3s, etc.
I recently moved to a big city and running errands all day without a car means I either have to make sure the phone is fully charged in the morning or buy coffee in order to borrow electricity from a cafe. This charger is pretty much the perfect size and weight for my situation, or any for that matter. A fully charged Astro Mini will replenish an almost-completely-drained iPhone 4S to 100% the first time and a little less than 50% the second time. Though it’s always a good habit to charge your phone before bed…but on the rare occasions that you forget to or need to have battery consuming applications (like GPS or Bluetooth) running for a long duration, it’s a life saver.
I took off a star for the following reasons:
1) The instruction states that “The red LED indicator will flash continuously while charging. The red LED indicator will TURN OFF AUTOMATICALLY when the Astro Mini is fully charged.” I find it not being the case for me and it took me a couple times to realize that once mine is completely charged, my indicator will stop flashing and stay fully on instead of turning off. Not sure if mine is defective, or it is an error on the manual. However not a huge deal.
2) We were shown a retractable adapter cable with the package but I received one of those coiled ones instead. The retractable cable would be more useful for me because it is longer (and adjustable) so I can pull my phone out of my pocket without having to take the charger out as well or disconnect it. I understand that companies do not always control the type of accessories that their distributors include on their packages so I probably just happened to not get the one on top of my list. On the plus side, coil cables tend to be more durable and generally lasts longer than retractable ones. Again, no big deal.
Some reviewers brought up that there are no indicator lights to show battery levels on the charger, but we all know they just need to shell out a little more to get chargers of higher caliber. Overall great price for a superb product! Did I mention how friendly and receptive they are to their customers? I would definitely consider looking at other Anker models if I need something more powerful!
Product is good, customer service is GREAT!
By Susan As Fisher "Torturedmommy"
I bought this just before a trip I was taking because I thought I would need some extra power for my devices. It arrived, I charged it up, and packed it in my carry on luggage. At my destination I tried to use it to charge my phone, but it didn’t seem to work. I was planning on returning it. When I got home I had an email from Anker wanting to know how it was. I told them my issue to which they promptly responded (and on a weekend). Turns out it was user error. The little light the tells you when it’s charged is actually an on button. You need to push it before you charge your device. It will light up green when charging. While the button was not intuitive, the customer service was quick, polite, and fabulous. Just bought another one for my hubby since I know we will be supported.
Excellent product
By Edward Redmond
Excellent charger, recharges phone very quickly. Very simple to use. Shiped as stated arrived on time. Compact nice bag to keep tips in. Fits with everything a teenage girl can put in her purse.
So far so good
By Gwen D
Bought this to help charge my daughter’s ipod touch when we travel. Works well the times I’ve tried it. This definitely works for what I purchased it for.
Great for emergencies
By William B. Partridge
I bought this along with another, larger, battery to figure out if size/weight was more important or if power and connection options were more important. Happy to say I’ll be keeping both but for different reasons.
This is about the smallest portable battery you can get that has any substantial charge to it (I’ve seen smaller with a sub 500mAh battery). It really is about the size of a large lipstick tube so it’d fit great in a bag or purse of the like. It comes with a cable as well with an assortment of plugs to charge stuff with from iPhones to android phones and a few random ones.
The size and capacity, while impressive, appear to be a limiting factor here. It’s not as easy to tell the charge state of the device as there’s only a single LED, unlike the typical 4 or so (for % base) on other chargers I’ve seen. This also limits the charging options – you’re limited to a single device and only 1A/5V. Not a huge issue really and it’s to be known when buying the device – not something I was surprised by.
Charging over a wall outlet tends to be a little faster, but may not be depending on the outlet you’re using (if it’s just 1A/5V out, it’ll be the same from your computer – about 6 hours). All in all it’s a handy device but the limitations and inability to know exactly how charged it is, along with missing features I’ve come to enjoy on the larger unit I bought (integrated wall outlet and integrated USB cable) leave it a little short. I’ve given it to my girlfriend to keep in her purse for use when her battery is dying. She seems rather happy with it and it works well.
Pros:
++ Tiny!
++ Lightweight
++ Enough battery to charge most phones
+ includes charging cable
Cons:
– Poor charge level indication
- Limited to single 1A/5V
In short you trade some features for size/weight. If all you need is a portable backup battery this will do the job amazingly well. If you need more features look elsewhere. The only thing I can really knock it for is the lack of a better charge level indicator.
Never knew how much I needed it.
By Techguy
My wife got this as a gift (pink one). I thought it was good for her to keep in her purse, but assumed it wasn’t for me since I couldn’t imagine stuffing it in my pocket every time I left the house. I was wrong.
The real utility of this for me is the “Running out the door, oh s*** my phone/Nexus is almost dead lemme grab this thing”
Half star off because the octopus cable and the tips are a bit much. If you are going to have all of this, they might as well add an additional cable for a second tip to charge 2 devices at once. I am Android only person, however, so I do what another reviewer does and just use a thin 6″ mini usb cable when I take it. Another partial star off because the directions are way to confusing/over written. Just plug the thing in, charge it up, it will do the rest. The indicator lights are intuitive.
I also like that it seems to hold its own charge for a long time without being used.
Summary: I had to buy one for myself because pink doesn’t work for me.
