[EternalHope]

Regarding EMP:

Just leave the batteries out and any flashlights should be fine.

This is not necessarily so if we are hit by an EMP. Some (most?) LED flashlights will have their electronics burned out by an EMP. Incandescent bulbs are much less vulnerable.

Since LED flashlights give the most light and use the least power, you might want to protect a couple of them.

[Kartographer]

Nothing to act as a conduit. You acan if you are worry easily store them in a ground metal cabinet inside a anti-static bag. The main and primary danager is not cars and flash lights, it is loss and distruction of the power grid. That is serious enough by itself and and all of damage will be spotty and minor at worse. Oh and one other thing we can expect a large number of electrical fires that was shown during the Carrington Event and the telegraph offices burned down.

[PA Engineer]

Since LED flashlights give the most light and use the least power, you might want to protect a couple of them.

I agree to be on the safe side.

I have grown particularly pleased with the ThruNite T10S LED flashlight.

I use it for every day carry (EDC) and found the case it comes in very easy to modify for protection. A pack of Energizer Ultimate Lithium AA batteries from Sam's and you are good to go for months.

The ThruNite is one of the most efficient flashlights I have found. It also comes with a small white coned shape diffuser for use as a small task lamp.