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Anker Astro E4 13000mAh Classic Portable Charger (2nd Generation, High-Capacity Fast-Charging External Battery Power Bank) with PowerIQ Techonology

4.7 out of 5 stars 749 customer reviews
| 36 answered questions

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Product Information

Technical Details
Item Weight295 g
Product Dimensions15 x 6.2 x 2.3 cm
Batteries:1 Lithium ion batteries required.
Item model numberAK-79AN13K2-BA
Weight295 grams
  
Additional Information
ASINB00BQ5KHJW
Customer Reviews 4.7 out of 5 stars 749 customer reviews
Best Sellers Rank
Shipping Weight363 g
Date First AvailableApril 9 2013
  
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From the Manufacturer

Astro 6400mAh E4 13000mAh E5 16000mAh E6 20800mAh E7 25600mAh
Astro Mini External Battery 2nd Gen Astro External Battery 2nd Gen Astro E4 External Battery 2nd Gen Astro E5 External Battery 2nd Gen Astro E6 External Battery 2nd Gen Astro E7 External Battery
Color Selection Black, Silver, Pink, Blue, Gold Black, White, Blue, Green Black, White Black, White Black, White Black, White
Battery Capacity 3350 mAh 6400 mAh 13000 mAh 16000 mAh 20800 mAh 26800 mAh
# of iPhone 6 charges 1.2 2.5 5.0 6.2 8.8 10.0
# of iPad Air charges 0.3 0.5 1.0 1.3 1.8 2.0
# of USB Charging Ports 1 1 2 2 3 3
PowerIQ Technology
Max Charging Speed 1 Amp 2 Amps 3 Amps 3 Amps 4 Amps 4 Amps
Size 3.5 × 0.9 × 0.9 inches (lipstick) 3.7 x 1.8 x 1.0 inches (candybar) 5.9 × 2.5 × 0.9 inches (glasses case) 5.9 × 2.5 × 0.9 inches (glasses case) 6.5 × 3.1 × 0.9 inches (Galaxy Note 4) 6.5 × 3.1 × 0.9 inches (Galaxy Note 4)
Weight 2.7oz (egg) 4.8oz (baseball) 10.4oz (iPad mini) 10.4oz (iPad mini) 15.8oz (football) 15.8oz (football)

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
I recently upgraded to a new phablet, Huawei Mediapad X2 which is my main device with a huge 5000 mph battery, and I was looking for a product that could keep up with my very heavy usage. I use my device for everything, coming from an Xperia Z Ultra with a mediocre 3050 mph battery. I was looking at other travel chargers, and you need to be careful of how many amps it puts out. I was reluctant to go with a bigger battery, kind of wanting something small like a travel card charger that fits in your wallet, but 0.75 - 1 amp output is not acceptable for my device. Do you know the brand I am talking about? Anyway maybe for a basic Iphone that thing would work (?).

I am not a light user. I don't understand how people with Iphones even function. My screen brightness is always up, consuming media-youtube, torrents (video), documents from work, Team Viewer controlling my desktop from mobile (lol), bluetooth & headphones-spotify, GPS-maps for transit times, and LTE. I read entire Kindle books on full brightness, I administrate online groups and am in constant contact with people, ect.

So, I went with this (It has a 3 amp output), and surprisingly it charges my device noticeably faster than my after market 2.5 amp charger at home. You will notice it. This is perfect because I am always busy, and only get 30 or so minutes at the most between my commitments where I have the time to plug it in. It would be good for someone taking city transit too. This is sufficient time to restore a huge portion of the battery, even for larger devices with an already large capacity like mine. Looking back this was the superior choice considering my usage and my device's battery design.

There is a lot more to say but I think the other reviews on here have already touched on it all.
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Verified Purchase
Fast delivery, very well packaged.
Device itself - great potential. Worked well for about 2 weeks. Compare to aukey 12000 mA I got recently, it charges faster and it takes less time to charge itself. For both chargers I am using ipad air charger.

However, starting past sunday, I noticed that one of the ports charging well, my ipad air gets full charge in about 4 to 5 hours. As for second port, I leave my ipad air overnight and, the charge is about 60% and stops right there. It is difficult to verify as it takes long time to test. I have to fully discharge my ipad and charge it again, then switch ports... I tried three times so far and, that seems to be the case that one of the ports does not function properly.
I purchased one more charger like that to give it as a gift but, may just send them both back.

UPDATE:
Received replacement for defective charger. Service from Anker is excellent. Charger works as expected.
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Verified Purchase
I previously bought a model that was 5600mAh for my mother and we all shared it and loved it a lot, so figured it was time to bite the bullet and buy one for myself. This is actually very well priced for the amount of power it can contain. With 2 USB charging ports, I went to a wedding and charged 2 friends' phones from near dying to almost full health (not even making a dent on 1 LED charging light after the battery pack was fully charged). It is a bit bigger and heavier than I was expecting, but it comes with a little carrying pouch to prevent superficial marks and just put it into my purse or backpack. I do, however, wish it was a matte coating, as there are a lot of fingerprint smudges visible... I loved this so much I bought another for my sister!
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Verified Purchase
I purchased this for my trip to central America. It does a great job of charging my ipod/kobo/camera/etc... without having to guard over my items while they're plugged into the wall hostels, as you can just plug them in in your pack and go. The flashlight is nice feature, as is two different outputs for different amperage devices. I use it frequently and it is still going strong two years later, and much more useful than I would have anticipated. (Size wise it's equivalent to 2 average smartphones).
I haven't had any issues in the two years I've been using it.
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Verified Purchase
Anker is an AMAZING company. I actually received a battery pack, that was probably one if a thousand, that didn't work properly. I called Anker, and in 2 days they had sent me a replacement Portable battery, without any questions. They never asked me to send it back. And hipped it so quickly. This one is working PERFECTLY. I love it. I travel for work, and having this charger with me works in countries where I might not be able to charge my device quickly. It's the smartest charger I've bought yet. It's charges quickly, and re-charges the devices over and over again before charging the pack again. If you're even questioning yourself whether or not to buy this, I highly recommend this product. I'm sold for life.. the product is reliable, and the company is fantastic in their customer service department. Thoroughly impressed!!!
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Verified Purchase
Generally works as described. I bought it for the capacity and size (weight is not bad, considering these). The only thing I find sub par is using the USB cable which came with the device - probably to do with the PowerIQ tech or maybe just a faulty cable - when charging my phone it constantly acts as though it is detecting the charge for the first time (ie vibrates and screen turns on). It charges fine, if I ignore the intermittent buzzes, but it is annoying! Usually using another cable solves this, but not always. Still recommend, for size/capacity.
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