Advocate of the devil, but I've never replaced my earbuds / headphones because of the battery life. Usually one of them gets lost, or actually crushed and breaks.
the tidal systems are insanely vast and powerful. the gravitational pull of the moon and the sun is so large that even if you deploy a massive amount of kits on a small surface, you're unlikely to have an impact on the tides. theoretically it's possible, but it'd require an implausible scale of deployment