bluetooth speaker

Hey y'all, I'm new here so I hope this question hasn't been asked too many times already. I am currently working on a little bluetooth speaker projet in which I aim to reuse an old driver I have lying around and so far I managed to mostly understand how to wire this up and for what I have to...

I am using a neckband. And it irritates me when it reached 20% battery life by saying low battery. How can I remove that indication by changing my firmware of the neckband.

So i'm currently trying to take parts out of a Bluetooth speaker's circuit-board and find the Bluetooth module for a DIY project. I looked at the board and some ICs and tried looking them up to no avail. So How Do you read an IC or any other components on the board Or even find a schismatic...