A lot of people talk about EMPs, but one of the simplest ways to add a little protection is storing small electronics in a basic Faraday setup. Things like radios, flashlights, backup chargers, and spare batteries can be placed in a metal container with the items insulated from the metal inside. The goal is to create a layer of protection in case of a serious grid event. It does not have to be fancy to get started. Even a simple metal can or metal box, lined properly so the contents do not touch the sides, is better than doing nothing. A backup radio, flashlight, and power bank are probably the first things I would protect. Anybody here built a simple Faraday box yet?
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For added layers, Store those Faraday cages inside a grounded metal building if you have one, like a storage building or steel barn. A lot of folks blow things out of proportion on what will happen with and EMP when the hard facts are it has never 100% been tested. There are approximates though that can and many systems have shown to hold up better than believed, with the largest weak link being high end digital electronics.