*HELP* PCB reworking for charge status Answered
My company has tasked me with finding a solution to finding the charge status on our equipment mainly headphones we use.
This allows us to meet more tight time deadlines/quick turn arounds for masses of headphones,thus saving us time charging when its not always needed/necessary.
The problem I have right now is the headphones allow charging & sync(programming) via usb mini b, However they act like a one way valve not allowing power to flow back out via the usb mini b.. We are looking to be able to use one of these usb volt meters to read the charge status. From my research so far I know a reading of 3.80v - 4.20v is a 'roughly' fully charged battery that will last roughly around 8 hours, Anything less than 3.30v - 3.00v will be recharged due to events usually lasting anywhere from 6-7 hours this will not be sufficient enough to keep going.
I have asked my company for schematics for this pcb, However the factory is located in china & emails/questions are not always answered quickly... so any input on this would be amazing to speed this process up.
I have attached photos;
If anyone is able to help reverse engineer the pcb to allow this to work, your input would be massively appreciated!!
(After this is sorted, I had been tasked to integrate wireless charging if possible)