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My 50,000mAh powerbank

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By alvster, Senior Member on 3rd February 2014, 10:50 AM
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So i recently bought an ipower brand power bank 50,000mAh.. its pretty cheap..

And i wanna see whether it is really 50,000mAh or not because i charged my phone only few times and it is out of power. my phone battery is 1,160mAh. So weird.

any suggestions to check? im scared mine is fake.

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3rd February 2014, 09:18 PM |#2  
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The amount seems ridiculously large. But hey, who knows. Charge the powerbank, see how many times you can recharge your phone battery (or get friend's phone and friend's friend's phone too)
5th February 2014, 10:32 PM |#3  
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Liberec
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Quote:
Originally Posted by alvster

So i recently bought an ipower brand power bank 50,000mAh.. its pretty cheap..

And i wanna see whether it is really 50,000mAh or not because i charged my phone only few times and it is out of power. my phone battery is 1,160mAh. So weird.

any suggestions to check? im scared mine is fake.

Sent from my Xperia Live with Walkman using XDA Premium 4 mobile app

Is it about the size of a car battery? If not, it can't be 50 Ah @ 3,7 V. LOL
Last edited by knizmi; 5th February 2014 at 10:35 PM.
6th February 2014, 09:27 AM |#4  
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its like the size of note 2 and longer a bit. quite heavy.

well i noticed it takes like 8-12 hours to charge the powerbank when its really out of power.. could it be 50,000mAh since charging it is so long?

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8th February 2014, 09:20 PM |#5  
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Liberec
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@alvster
Only way to be sure is to measure it or rip it open and see what kind of cells and how many there are inside.
There is one more important question - 50 Ah at how many Volts? 3,7 V? 5 V? Or 1 ... ? The cells inside are likely going to be 3,7 V, but you never know how much power it actually stores unless you know both capacity and voltage against which it is measured or, even better, wattage.
22nd April 2015, 03:47 PM |#6  
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Chinese External 50000mAh Backup Portable Power Bank Disassembly
I found out this video which shows how the chinese 50000mah power bank looks inside
it has 5 cells , on the box it says 50000mah
youtube.com/watch?v=uecIquH7fU8

what do you think about it's capacity? is it any good?
30th June 2015, 05:14 AM |#7  
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For the Common appearance we saw in the market, the maximum capacity can be achieved 20000mah.
There are some supplier who provide power bank higher than 20000 mah, but normally they use 10 pieces of 18650 battery. And the the maximum amount of 33000mah can be done (nominal 34000mah)
Power bank has amp more than this number must be false.
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