It's time to get back to work in the real world. Here is a Mosrite body, almost completely recovered from its brush with water-based polyurethane. Stick with oil-based, water-based is junk.
This one went through a long and torturous build process over almost two years. All I can say is don't believe the "advice" you find on talk_ass. However, in the end, it turned out to be a pretty nice instrument.
Passive electronics are un-powered - no battery. They modify the output from the pickups only by taking away - they can remove frequencies and reduce volume, even induce distortion, but they cannot add anything. The only power they have to work with is what is generated by the pickups.