Comment by mortenjorck

Apparently it's the voltage output of the charger that matters with the Switch, and the damage is done over time rather than with sparks and smoke: https://www.tomsguide.com/news/nintendo-switch-brick-docks

> To oversimplify things quite a bit: The Switch uses a M92T36M Power Delivery (PD) chip, which isn't quite like anything else on the market. The chip can tolerate six volts of power — and that's it. Docks like Nyko's can provide up to 9V of power, meaning it's only a matter of time until the chip burns out.