Those bags have fold over flaps with Velcro strips. They are also tested (and I use that word loosely) to very specific, cell phone related, frequencies. I don't think these would be effective for EMP.
i hered they can short out. but thats the least of are worries. cause if we get hit head on by one. its going too set fire too alot of places like it did back in 1859 telegraph systems worldwide went haywire. Spark discharges shocked telegraph operators and set the telegraph paper on fire. Even when telegraphers disconnected the batteries powering the lines,this same thing will happen with landline telephone services.. and long distant power lines were charges can build and then discharge. into homes and buisnesses aurora-induced electric currents in the wires still allowed messages to be transmitted. here is the nasa link http://science.nasa.gov/science-news/science-at-nasa/2008/06may_carringtonflare/ this info was blocked for a little while but its back....in 1989 it also caused wide spread damage frying power transformers...u can use a steel trash can as a faraday cage make sure its grounded and lined with eather rubber or cardbored too protect your items inside...hope this helps:thumb:Solar storm / EMP will have no effect on batteries if not hooked up. Batteries work on a chemical reaction.
That's the the key right there, long distance wiring.From newtoothis:
Even when telegraphers disconnected the batteries powering the lines,this same thing will happen with landline telephone services.. and long distant power lines were charges can build and then discharge
hhmmmmm that linked only covered nukler emps. the sun 2 weeks ago let out a x12 pulse X-CLASS FLARES: Major event with the potential to trigger planet-wide radio blackouts and long-lasting radiation storms. ahhh yes here is a link that hints on batterys saying that they will not be affected...hhmmm http://www.disaster-survival-resources.com/solar-storm.html just too be safe i would still store backup batterys in a faraday cage. a ounce of prevention is worth a pound of cure!!!In the event of a solar storm, batteries cannot short out if not connected. There nothing in a battery that can be affected, it's a chemical reaction that provides electricity.
That's the the key right there, long distance wiring.
Please check out this link it will help further understand. For a solar flare check out the E3 section.
its not exactly a wives tail, i think that the wood provides a thermal insulative barrier between the battery and the ground... as we all know batteries rely on a chemical reaction (some wet and some dry) to stimulate the flow of electons between leads.If the deep cycles or car batterys are not hooked up to anything, they should be fine. I'm not sure if it's an old wife's tale (or in this case, an old mechanic's tale), but we always set them on a wooden board instead of directly on the ground or on concrete. The wood is supposed to help insulate the battery and help it keep it's charge longer.