I need an answer to a question. I've not been able to find this answer anywhere. If we were to suffer a large EMP- man made or a solar CME (coronal mass ejection) that would fry some electrical systems... how do I protect my radios, rechargers, batteries etc from damage? Do I just store them in Mylar? Is that enough to diffuse the electrrical charge? Or do I have to store them inside a metal ammo can, military radio box or something metal. Also.. does whatever I store this stuff in- be in mylar or metal, does it have to be grounded in order to diffuse or redirect the electrical charge?