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Anker 2nd Gen Astro E4 13000mAh 3A High Capacity Fast Portable Charger External Battery Power Bank with PowerIQ Technology - White
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- The Anker Advantage: Join the 10 million+ powered by our leading technology
- Exclusive PowerIQ Technology: Detects your device to deliver its fastest possible charge speed up to 3 amps
- Huge Capacity: Charges the iPhone 6 five times, the iPhone 6 Plus or Galaxy S5 over three times or the iPad Air once. Safely recharges with a 2 amp or higher output charger (most phone chargers have only 1 amp)
- Superior Quality: Premium LG cells, cutting-edge circuitry and a sturdy gloss exterior ensure reliability and safety. To activate the LED flashlight, hold or double click the power meter button
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The Anker Advantage: Join the 10 million+ powered by our leading technology. Exclusive PowerIQ Technology: Detects your device to deliver its fastest possible charge speed up to 3 amps. Huge Capacity: Charges the iPhone 6 five times, the iPhone 6 Plus or Galaxy S5 over three times or the iPad Air once. Safely recharges with a 2 amp or higher output charger (most phone chargers have only 1 amp). Superior Quality: Premium LG cells, cutting-edge circuitry and a sturdy gloss exterior ensure reliability and safety. To activate the LED flashlight, hold or double click the power meter button.
Top customer reviews
I finally took the plunge and decided on this one, at $36 the price was right for the size and there was a coupon to use towards extra cords. I have not regretted my decision. I could get about 5 full charges out of this with my Nexus 4, only 4 charges when my boyfriend was using it to charge his apparently power hungry Galaxy S5. When I get down to one dot, I simply plug it in overnight (it does take a long time to recharge the battery). The flashlight is nice, but since I always have my phone I've only used it a couple times. Overall, it has been a must have in my purse.
It only comes with one cord, so my suggestion is to buy a little one foot cord as an extra, this seams to be the perfect size for charging while sitting in a restaurant or in my purse without having to worry about cord tangles.
The only reason I did not give this a five star review was because the carrying case it comes with is terrible. I made my own instead.
Update 1/10/2016 - Disappointed that 1 of the chargers how now quit working. Won't charge anything but all the charge lights are lit.
Update 2/27/2016 - Received an email from Anker customer service after they read my review that one of the batteries stopped charging. I am pleased to say they have sent me a replacement that works great. Now that is awesome customer service. I will definitely continue to do business with them.
UPDATE: I was contacted by Anker via email asking how they could help to make my purchase experience better. I called the phone number provided and talked with a representative who answered questions and made recommendations. Essentially the plug I was using (standard IPhone plug) did not have sufficient amps to charge the Anker charger. I bought a plug with 2 plus amps and the problem was solved. I did not know the charging requirements for the plug and consequently thought it was the Anker charger that was not working. Thanks to Anker customer service I am very satisfied now and appreciated the prompt courteous service.
Its almost as good as the wall charger at home.
if I do the math, that's:
1420*.7=994mAh (the approximate amount i'm charging each time)
994*10=9940mAh (about 10 times from this battery pack before I need to recharge the pack itself)
9940/13000=0.7646 (or about 76.5% charging efficiency, which is very acceptable for this type of product)
The numbers are probably even better than that, since I don't drain the pack completely dead before recharging it.
aside from that, at 3amps, it charges my phone faster than the wall charger will. I also love the fact that the embedded flashlight doesn't instantly come on when you hit the button. I've had similar chargers with embedded flashlights that do this, and the only thing those are good for is accidentally draining your battery.
The bottom line: This is a solid product that delivers on its claims. I can't speak to longevity yet, but I'll return in a few months to let you know how it's going.
Update: Well, the battery did not last very long even after fairly light use when I travel for business. So I am revising my review to two stars. I expect battery packs to last longer. Do not buy this one.