Tesla warned owners in a post on X not to charge their Teslas with a wet towel.John Keeble/GettyTesla warned owners against using a wet towel "hack" on Supercharger cables.The unofficial method involves wrapping a damp towel around the cable to attempt to juice charging speeds.Tesla emphasizes that this interferes with temperature monitors and poses risks.Tesla issued a warning against using the wet towel charging "hack" that's been circulating among some owners online.The method entails wrapping a damp towel around the Supercharger cable on a hot day.