Nah, I imagine when a Zero is wrecked, it gets turned into a cyberquad, like Rich did.
Or, the pack gets pulled and put into a sailboat.
If not wrecked, yeah, there's companies and hobbyists that replace the bad cells in a "Dead" pack and the pack is 99% as good as new. I just don't see many scenarios where a pack is tossed in the landfill, too valuable.