I've used that Lectron charger adapter quite a bit with public Tesla chargers and haven't had any problems with it at 6.6kW (Tesla HPC and Tesla Destination type chargers). I haven't used it with a Tesla mobile/home charger since we don't have one, but I'm not sure what it would do to destroy the Tesla chargers. As far as I can tell, there are no intelligent components in it, just wires. My Prime always seems a little confused by it at first compared to a regular J1772 connector, but it always sorts itself out and starts charging within 15 seconds.