Sale Anker® Astro 3E 10000mAh Portable High Capacity Dual-Port External
Battery Power Bank Backup Charger for iPhone 5S, 5C, 5, 4S, 4, iPad 4,
3, 2, Mini, iPods (Apple adapters not included), Samsung Galaxy S4, S3,
S2, Note 3, Note 2, HTC One, EVO, Thunderbolt, Incredible, Droid DNA,
Motorola ATRIX, Droid, Moto X, Google Glass, Nexus 4, Nexus 7, Nexus
10, LG Optimus, PS Vita, Nook HD+ (30-pin adapter for Nook HD+ not
included), GoPro and More
Anker® Astro 3E 10000mAh Portable High Capacity Dual-Port External Battery Power Bank Backup Charger for iPhone 5S, 5C, 5, 4S, 4, iPad 4, 3, 2, Mini, iPods (Apple adapters not included), Samsung Galaxy S4, S3, S2, Note 3, Note 2, HTC One, EVO, Thunderbolt, Incredible, Droid DNA, Motorola ATRIX, Droid, Moto X, Google Glass, Nexus 4, Nexus 7, Nexus 10, LG Optimus, PS Vita, Nook HD+ (30-pin adapter for Nook HD+ not included), GoPro and More Review
Capacity, charge speed, or portability? With the Anker® Astro 3E, you get all three. Who would've thought that 10000mAh could be so compatible, light, and sleek?
Four times the juice.
With 10000mAh of capacity, charge your iPhone 5 / 4 / 3GS / 3 four to five times (40 hours of talk time), your Galaxy S3 three times, or your iPad / iPad 2 once. That's more than 400% the capacity of most smart phones.
Get powered up...fast.
Plug in one device for 3A of output or two for 3A total. Special circuits built for Apple and Android let you charge your phones simultaneously at full speed.What's more, we included a handy travel pouch to store your cables and Astro all-in-one.
Simple, reliable power.
Designed to be functional and efficient - nothing else. At 0.59in thin, the 3E comes ready to serve as an unobtrusive, lightweight solution to your daily power needs. Four small LEDs alert you as to how much capacity you've got left.
For optimal use.
• For simultaneous, max-speed charging of your Astro and other devices, check out Anker's new 25W 5-port wall charger or dual-port 24W car charger.
• Compatible with all Apple and Android smartphones, tablets and other USB charged devices with a 5V charge input. The iPod nano, Samsung and Asus tablets and some GPS and Bluetooth devices are not supported.
Get to know us.
The Anker Astro external battery has been voted #1 in class by thousands of online reviewers, while our renowned customer service has made us a fan-favorite across the web. Every sale includes an 18-month, worry-free guarantee to prove the importance we set on quality. After all, we're customers too.
Price : $39.99
* Get the best price and special discount only for limited time
Anker® Astro 3E 10000mAh Portable High Capacity Dual-Port External Battery Power Bank Backup Charger for iPhone 5S, 5C, 5, 4S, 4, iPad 4, 3, 2, Mini, iPods (Apple adapters not included), Samsung Galaxy S4, S3, S2, Note 3, Note 2, HTC One, EVO, Thunderbolt, Incredible, Droid DNA, Motorola ATRIX, Droid, Moto X, Google Glass, Nexus 4, Nexus 7, Nexus 10, LG Optimus, PS Vita, Nook HD+ (30-pin adapter for Nook HD+ not included), GoPro and More Feature
- 10000mAh of capacity. Charges all iPhone four to five times, a Galaxy S3 thrice, or an iPad / iPad 2 once.
- Charges one device at maximum speed or two at 3A total. Android 5V / 3A (max) port charges Android devices and iPhone with iOS 5 or higher at full speed or iPad at 1.5A; Apple 5V / 3A (max) port charges iPhone at full speed or iPad at 1A (Android devices at 0.5A). Note: this product CANNOT charge Samsung or Asus tablets.
- A lightweight, unassuming solution to life's daily power needs (0.59in thick). LEDs display just how much juice you've got left. Reliable lithium polymer core ensures quality, supplying you with more than 500 charge cycles during the course of its life.
- Input: 5V / 1.5A; Use a 1.5A adapter (not included) for fastest charge times (8 hours).
- Package contents: Anker® Astro 3E External Battery, Micro USB wire, user manual, and travel pouch.
Anker® Astro 3E 10000mAh Portable High Capacity Dual-Port External Battery Power Bank Backup Charger for iPhone 5S, 5C, 5, 4S, 4, iPad 4, 3, 2, Mini, iPods (Apple adapters not included), Samsung Galaxy S4, S3, S2, Note 3, Note 2, HTC One, EVO, Thunderbolt, Incredible, Droid DNA, Motorola ATRIX, Droid, Moto X, Google Glass, Nexus 4, Nexus 7, Nexus 10, LG Optimus, PS Vita, Nook HD+ (30-pin adapter for Nook HD+ not included), GoPro and More Maybe you should visit the following website to get a better price and specification details
Costumer review
703 of 722 people found the following review helpful.
A compact battery for the extra power you need
By David Parenteau
Pull out your big-pockets and don't expect something light, but plenty of power is in this package.
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The Praise (Good Things)
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* Small form factor for the amount of battery content
* Charge status and level indicator LEDs
* Automatic power off
* Custom circuitry for Android and iOS devices
* A selection of connectors for various devices
* Excellent value for cost
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The Raze (Bad Things)
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* Included spring-coil cable and construction is not too good
* Possible evidence of no full-discharge protection
* The "convenient travel pouch" is too small and not convenient
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The Haze (Things to Consider)
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* Slightly larger than a large Smart Phone
* Substantially heavier than a large Smart Phone
* Charges more slowly than the power it supplies
* Will not charge low-power-draw devices due to Auto-Off function
* Charging this device draws more power than some chargers can provide
* Does not come with an AC power adapter to charge itself
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The Details...
This battery comes in a comfortable packaging with good instructions and a few extras (They gave me a bookmark... A bookmark? Really?). A zip bag contains the various adapter attachments: Apple 30-Pin, USB Mini, USB Micro, and a standard 5V Barrel connector. The other end of all of these adapter attachments is a smaller-than-normal barrel connector that plugs into the female barrel connector at the end of the spring cable. The other end of the spring cable is a standard USB A male connector, same as you would plug into a computer. There is also a mesh-bag carrying case.
Sadly, I have to touch on two raze items right here:
The construction of the USB spring cable and the adapters is nothing less than shoddy. I had to quickly convert to using a normal cable that came with the phone and tablet over the included spring cable. The USB A side of the power cord has trouble maintaining connection with the battery and the adapters have trouble maintaining connection with the device. While this nice compact cable would be a great boon to many, the poor quality makes it next to useless, with constant wiggling of the connections often needed for it to continue to operate.
There is also a mesh, draw-string carry pouch. This carry pouch is just barely too small for the battery pack to fit in and allow it to close and there is no way to easily store the connectors and previously-mentioned faulty spring-charging cable. Then I thought, "Maybe it's just meant to hold the adapters and cable!"... But then it's hugely overkill and the battery pack itself is not included in the carrying. The carry pouch really ends up being more of a hindrance than a convenience.
While both of these items are really secondary and overall not worth a star off. Anker may want to consider a better design and quality for the adapters and the bag, for example a carry bag that can securely hold the battery itself with a Velcro flap instead of a drawstring and a secondary pouch for the connectors. As for the connector cable, besides substantially-better construction needed, they might have better luck with adapters that go from Micro-USB to the other formats. That would allow the use of Micro-USB with no special adaptation and fewer adapters needed for the other forms.
What I would honestly love to see is some way to have things plugged into this without the cable sticking out so far. Phone and Battery, back to back with a low-profile connection to each would be truly-portable charging.
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Battery for breakfast, lunch, dinner, and a late night snack...
Nobody can deny that the digital world of today is a power-hungry place. Charging stations have cropped up all over and it's not uncommon to see folks' phones plugged into the local wall sockets at coffee shops or bars or hotels. Phones and tablets are faster, brighter, and more powerful, but they eat batteries like mad. Even with an extended life battery clipped to the back or stuck inside, most people will find themselves running low at some point. That's where an external charger battery comes into play.
Let's start with some numbers and quick facts:
USB specification carries 5V (five volts). Officially, it carries 500mA (milliamps), or 0.5A. Running something at 500mA for one hour will consume 500mAh (milliamp-hours) of energy. Amps are a unit of DRAW - or "pull" - not "push". If a battery has 1,000 mAh of capacity, it can have a 500mA draw for two hours. With 10,000mAh of capacity, it can support the same draw for 20 hours. The mA or Amp rating of a power supply (3A in the case of this external battery) is how much load (pull... remember?) it can take without overloading. It will not "push" that much through and kill things, however it can have problems if the load placed on it exceeds its capacity. So basically, a battery can provide energy for hours equal to its capacity in mAh divided by the average draw in mA.
Batteries are just a chemical reaction that makes electricity. More chemicals means more energy can be stored. But more chemicals also means a bigger battery and a heavier battery. Plus it's important to consider that the Lithium-Polymer battery stores electricity at 3.7 volts, so there also has to be circuitry to change that up to 5V for the USB connector. More power takes more space and more weight. As a good example, the battery in an HTC One is 2,400mAh, or a bit under 1/4th the capacity of this. Thus, this device will have a battery that is about four times the size and weight of the battery inside the HTC One. That also means this can recharge an HTC One about four times.
Got all that?
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Just make it work FASTER!
Both Apple and Android device makers (as well as others) realized that it takes a Long Time to charge a battery with only 500mA of input. So they made their devices capable of drawing more power, often 1.5A or more. They needed a way to know whether they were plugged in to a normal USB port that could only deal with 0.5A though, so they wouldn't overload the port. So both developed circuit signalling that would allow a high-amp charger to identify itself so the device would use the higher current and charge faster. Both of these signalling methods are enabled on this external battery, which is a boon to quick-charging devices.
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Pocket-Sized Power - For big pockets
This is important to consider. This is bigger than a large smart phone. take the HTC One again as an example:
5.4 x 2.7 x 0.4 inches <- HTC One
5.6 x 2.8 x 0.6 inches <- Anker 10,000 External Battery
This battery is a bit bigger than the entire cell phone in all directions. Now, in my case, I wear cargo pants due to everything I need to carry for work. Not only do I have normal side pockets big enough to completely hold a 7" tablet, but I also have cargo pockets. Having effectively "another phone" in size and about two or three phones in weight is no big issue for me. If you have a very small handbag or wear tight pants with tiny pockets, this may not really be "pocket sized" for you. At the same time, this is the most-compact power supply I have found so far, with the amount of power it holds being very good for its size. It's easy to find others that are just as big or even bigger yet hold substantially-less juice. It's also easy to find others of the same price or more expensive that can't hold as much juice either. So in both Power/Size and Power/Cost, this is a winner.
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Features that matter
The Charge Level Indicator LEDs will tell you how it's doing both when charging this battery as well as when using this battery to charge other things. The simple push-button operation makes it easy to turn on and it will turn itself off when the current draw is under 80mA. Nothing connected? It turns itself off. So you can check its battery level with a push and see if you need to recharge it before heading out. Many phones also draw less than this when they are fully charged and asleep, so again, auto-off.
However it's important to note that 80mA minimum. Some things like Bluetooth headsets and other devices draw very little current when charging. Try to plug in a tiny little on-the-ear headset and charge it and you might be in for a surprise as it doesn't draw enough power to keep the battery pack on.
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Feed Me!
Another thing to consider is that the battery itself draws 1.5 amps when charging. Remember: It doesn't come with a power supply unit. Plug it in to your average computer USB at 500mA or a charger that can't provide enough juice and suddenly... Doom. There is a chance for overloading the supplying source, which can cause it to heat up substantially. Voltage can drop on the supply, causing the external battery pack to not charge at all. And in the even that the battery pack recognizes that it can't get enough current, remember how long we discussed it would take to charge the 10,000mAh battery at 500mA? Yup. 20 hours. More, actually, since there is conversion loss in the charging circuits.
Oh, hey, look! There are reviews that talk about charging it for four hours and not getting past one LED lit and the wall charger heating up. So there are precisely the symptoms of charging on a normal computer USB or with something like a 1A wall charger.
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It died for SCIENCE!
Several things combined with other reviews create one chilling consideration: This battery pack may not have complete-discharge protection systems.
"But what does THAT mean?" you ask? Time for more science:
Lithium-Anything batteries (Lithium-Polymer in this, Lithium-Ion, etc) must -NEVER- be 100% discharged. Due to this fact, devices (cell phones, media players, iPads, and other things that use Li-Ion batteries) will "lie" about the discharge status and consider the battery to be 0%, or "Completely dead", when it still has about 10% capacity remaining. This is why even when the device says "Dead! No more!" it can still turn on its screen using that "dead" battery for just a second to show you there is no more.
The batteries don't explode if they are discharged too low, or swell up (swelling happens from being overcharged and the charging circuit not going to float voltage), or release toxic gasses. They just Stop Working. Completely. If they are fully-discharged, whether by draw or by age, they will never, ever, EVER hold even an inkling of a charge ever again.
The various reviews that indicate that it would never recharge are likely just people who plugged it into underpowered power sources for insufficient time, however the very nature of this kind of system means that people will Do Not-Good Things. Trying to squeeze the last tiny bit of power out of this battery... fully discharging it and then desperately trying to get it to turn on just for those last few moments... The result: Dead battery pack forevermore.
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Summary - In the end, I hold the power.
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Though it is not perfect and does have room for improvement, this is a very solid device. You can't beat the Power for Size ratio, nor the Power for Cost ratio. The company is on their game, paying attention to reviews and buyers and responsive to inquiries. As long as you pay attention to the charging time needs of this device and the power needs, you'll have no issues with performance. If you don't wear super-tight pants or have a tiny handbag, this is as pocket sized as a Smart Phone and is definitely more pocket-sized for how much power it holds than others.
Take a look at the info I give you and you should be able to tell if this is the best purchase for you. If there's not enough information, let me know what questions you have and I'll try to find out and let you know.
As always, please let Amazon and I know if my review is helpful to you. If it's not, let me know why in a comment so I can give better information in the future. I monitor my comments and reply to questions, and I do updates on reviews when I am able.
306 of 329 people found the following review helpful.
Awesome portable power supply.
By Paul Renwick
For those readers that are reading this review on the Item page, this review is for the Astro3E 10000mAh charger. Since Amazon mixes reviews with all different "variants" of a product, and this comes in multiple capacities, this makes it hard to separate reviews.
This product does what it advertises, and does it VERY well. It comes with a nice mesh case which I carry it in constantly, and a nice little coiled USB cord with a few tips. While these aren't compatible with every device I own, I use it mainly to charge my phone, which is MicroUSB and included.
Some devices I have tried charging:
- I own a Motorola Droid 4, and I have charged the phone from dead to full over 4 times on a single charge. Android and Apple ports work, but on the Android port, the Droid 4 actually charges FASTER than the stock plug-in charger. My phone does not seem to mind.
- An LG Ally charges on either port, but faster on the Android port.
- A Nintendo DS Lite (with a compatible USB cord) charges on either port.
- An iPod Nano 6th Generation charges on the Apple port. It does not respond on the Android port. I have charged this device from dead to full, and did lose enough capacity on the battery for it to register.
I will update this review with more results as I charge more devices. I'm going on a few flights in the next couple of months, so this charger will gets LOTS of use.
212 of 257 people found the following review helpful.
Impressed.
By Christopher E. Robison
I don't actually like giving 5-star reviews, and on this one I hovered over 4 stars thinking to myself, well ... what's actually wrong with it? What can I deduct a star for? It doesn't actually charge itself magically from the luminiferous ether, it doesn't fly or bake cookies, and it definitely doesn't impress the ladies. Maybe they'll work these features in.
I've just received it and used it a couple times, so maybe I'll find a serious problem with it in the future. But for now, I'm really impressed with the apparent quality and functionality of the device. I can't really find anything serious to complain about.
Make no mistake, this thing is not subtle. It's bigger and heavier than my Galaxy SII (a fairly large-screen phone), though the dimensions are comparable with the phone when my rubber case is on it. It's massive, like a plate of armor or a piece of a big stone tile, and feels nearly as dense and solid. At 37Wh of capacity and up to 3A of current, the size and mass is definitely justified though, and it's obvious that they didn't waste any internal volume with hollow spaces in the enclosure. It hangs heavy in your pocket, but then we knew that was the deal before we bought a 10 amp-hour auxiliary battery, didn't we?
As an aside, this is the kind of thing that seems to deserve its own new kind of clothing to carry and conceal it. Since it's mainly going to be tech geeks who are interested in carrying around so much gadget fuel, and nerds like me tend to have a pretty substantial anterior pelvic tilt from sitting in front of computers all the time, maybe there's a market for some kind of garment that will hide a device like this in the curvature of the lower back, providing an "outlet" through your clothing somewhere around the belt.
Anyway, they get a top score for build quality and functionality, as I see it so far. Though I haven't done any deliberate timed trials, I don't own any other charging device of any kind that seems to charge my phone as quickly as this battery does. We'll see how well it's holding up in a few months...
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