Wireless Earphones

[hackeroid]

I want to understand the main board of my wireless earphones it has some connectivity issues with my PC, moreover I want to add another battery to it, kind of redesign it a bit..
can someone help, then I would attach some pictures of its PCB.
Thanks in advance..

 

[Alabalcho]

Describe "understanding" and "redesigning".
What are your electronic skills?