Why does my e-cigarette get hot?
If it gets a little warm, that’s normal—it’s how vaporization works. If it gets so hot you could brand cattle with it, you’re chain-vaping too hard or your settings are too high. Let it breathe; it’s not supposed to be in hell.
Heat is dissipated through the metal of the tank and the box. Excessive heat can be caused by a poorly managed Joule effect or a battery struggling to provide the requested energy. If the heat comes from the battery area, stop immediately and check their condition.