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How well do portable USB chargers work on tablets?

post #1 of 7
Thread Starter 
I am considering picking up a portable USB charging brick for my tablet when I travel. I typically sit on planes quite a bit (and in the airport nowhere near a charging plug usually).

They seem to be pretty cheap, logisys 4400MAH is only $25 and the Patriot 3000MAH is around $35.

A couple of questions:

How long do the charging bricks take to charge?

Will I get a full charge to my tablet from a fully charged brick (and can I use it more than once without recharging)?

Can I use a tablet that is near dead while plugged into the brick for charging?

Using a 64GB Wifi only IPad Mini.


Thanks
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post #2 of 7
I use one by enigizer and they are great IMO. Great on any thing when low on power
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post #3 of 7
Be sure it's rated at the same amperage as your tablet charger. I had a cheap one for my Skyrocket and it was fine but on my S4 it charged so slowly it was almost useless. I imagine the same would be true for tablets.
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post #4 of 7
Thread Starter 
Thanks.

I ended up grabbing a 4400MAH Logisys model. It charges the IPad Mini without issue and can be used while charging. It's also quite tiny which helps.

$25 hard to beat.
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post #5 of 7
I'm assuming you mean external battery packs. 10000 mAh (well known brands) frequently drop to low $30s. 4400 mAh for $25 is expensive IMO.
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post #6 of 7
Quote:
Originally Posted by lvlrdka22 View Post

I'm assuming you mean external battery packs. 10000 mAh (well known brands) frequently drop to low $30s. 4400 mAh for $25 is expensive IMO.
10000mah ... often faked capacity. Well known brands or not they are still suspicious
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post #7 of 7
Quote:
Originally Posted by DaveLT View Post

10000mah ... often faked capacity. Well known brands or not they are still suspicious

No, it's real, it's been measured. It charges my tablet (6600 mAh) fully and then some. There's a 30% loss in conversion/heat, of course (associated with every battery pack).
I mean, it's not like anyone buys these batterys without reading detailed reviews, disassemblies for cell checks, etc., for legitimacy, right? tongue.gif

This is the one I have. I also ordered a 26000 mAh from ebay (it should be a rebrand of a similar one on Amazon), so I can charge laptop as well.
Edited by lvlrdka22 - 8/16/13 at 2:26pm
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