I don't know if it is the right forum to ask the question but I just post it here.
I have a power bank connected to my rpi b+ and I want to ask if it is in general possible to read the current load of a battery via usb. Of course every power bank is different, but maybe someone had the same problem and solved it. The reason I am asking is that on my power bank and on many different there is normally a LED which shows how much load is left in the battery, of course it is not this accurate but just to know the load would be really helpful to prevent a sudden shutdown.
Hope anybody can help me!
Maybe it is the wrong forum and someone could give me a suggestion in which forum of stackexchange or maybe on another site I should ask for advises.