How to tell the real capacity of my powerbank?

[Gamer1080]

I bought this powerbank from Alibaba
that is supposedly 100,000 mah. Obviously it is not but can someone help find out how many mah it really is? This is a link to another one. http://

 

[zionosis]

There are devices you can buy that will drain the battery and measure their total mah. The IMAX B6 or something I remember will do the job perfectly for you.

As far as that thing you bought the panel is only 1.5w and the battery or device output is 5v at 2.1A so 10.5w output.

It clearly as you said is not 100ah. If it was it would be a 500 watt hour battery and lol, clearly impossible.

Chinese, Maybe they put the numbers in wrong or even deliberately tricking people.
I would say it's probably like 1ah which would be 5 watt hours.

So it could output 5 watts for an hour or the 10.5w output it does for nearly half an hour. Then the little panel will take say roughly 4 hours in the sun to charge the battery back up. That is about the reality of it.

There are actually decent portable units to charge your phones. You should have just bought one of those.
Something like this.
http://www.ebay.com.au/itm/5V-Porta...AU_MobilePhoneAccessories&hash=item1c474e9cc1


See that takes two 18650 batteries which are good rechargeable lithium batteries that are the type in laptop batteries. They will hold a decent amount of energy.

If you bought two good 3.4ah 18650's and put in that charger you would have around 25 watt hours of available power.
That could charge most phones at least 3 times over.