Then what? The battery explodes...is that what ur implying? It will melt if your battery is worth a shit. But the same thing would happen if instead of touching the body of battery, simply touches the mod. Whoopsie. You never thought of that have you.
Sometimes I work with live high voltage. 400 to 10000v...stuff like that. You get no access to these without being qualified and accredited. So lets just safely assume from the get go that you couldnt possibly advocate me on anything regarding electricity. You being overly concerned about a wrap reinforces the idea that youre just new to this and the only reason you might know Ohm's law is purely because of vaping.
Onto the wrap. Do you actually think that the wrap is a proper insulator? Its easy to puncture, easy to cut, you can remove it with your fingers if you wanted to. Let me tell you why. 18650 cells have never been made to be used individually. They are solely designed to be used for battery packs inside a hard plastic shell, or inside any random electrical device, but never on their own, with the contacts exposed to anything a user wouls throw at them. Vaping devices do not qualify if the 18650 is removable. Hence the wrap. No need for proper insulator if the battery goes out from the manufacturer straight onto the assembly line of another equipment. Basically a bit of protection while in transit.
Now mod manufacturers are well aware of this, and the battery compartment of mods using 18650's will be always made of plastic with plenty of spacing between cells. For this very reason, in the very likely case the wrap is damaged. The battery is very safe inside the mod with or without intact wrap. Problems start when its removed.
Tl:dr stay the fuck out of battery threads, you havent got a single clue or you'd stop using individual 18650 altogether.
