best External batteries

I know the answer will be rather subjective, but, what's the best external battery for iOS? I'm not looking for a case, I'm either looking for a power station, or an external battery that you plug into the phone, (please recommend batteries for the 5 or newer for that one option please.) Thanks for any info anyone can have on this matter!

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#1 Hi!

Hi!
I have the MyCharge RazorUltra power bank. It's got 12000Mah of power, so it's got enough or a few charges of you phone. Plus you can use your own USB cables, as it has 2 USB ports on the fromt of the device. Combined output between both ports is 3.4 amps, so charging devices is quick. I also use the charging adapter found with the Mycharge HubUltra power bank which one of the cables builtin to that bank quit working a while ago, so I kept it's charging cradle/usb power wall adapter which can supply 2.4 amps of USB current, so it's used to recharge the RazorUltra bank.
It comes with a 2.1Amp usb wall adapter, but haven't used it yet, so we'll have to see what kind of change it gives charge time.

#2 Got an Amazon link?

Got an Amazon link?

#3 Best External Batteries

I use the Anchor external battery pack. There is one that has 13000 MA for 29 dollars and there is one that has 15000 MA for 49 dollars. The 13000 MA is probably the best for the money.

I use this battery pack and have given it as a gift to many others. It can charge both an iPhone and a full sized iPad. I'll provide the link to the 13000 MA version.

http://www.amazon.com/Anker-13000mAh-Generation-High-Capacity-High-Quali...