I am looking to boost my bass (since it seems to be completely lacking) but am unsure where I can safely place something like a Kicker 46CWTB104 without worrying about interference with the hybrid battery system.
Anywhere it fits, you don't need to worry about interference. FCC part 15 + your tax dollars at work.
Not entirely sure how FCC part 15 applies to the woofer magnet interfering with the traction battery. I have seen on other forums how people installed a subwoofer and it was too close to the battery and the magnet on the woofer caused the Hybrid system to freak out.