@nullermand_inc I would suggest that you treat it just like you would any other device that got water damaged. Use something like this guide [guide|133715] to get into your headphone. Left and Right are pretty identical. Then clean your boards with some high grade isopropyl alcohol (+95%)and a soft brush. Make sure that you get to both sides of the boards. You may have to de-solder the wires. Take pictures so you know what goes where. Clean the boards. Replace the battery and reinstall the boards. Then re-evaluate. Until it is cleaned and the battery replaced, it all will just be a guess about what is going on with it. It is not very complicated but requires a few skills like soldering. I am certain you can fix this yourself and get it going again.
REPAIR IS WAR ON ENTROPY