Comment by mrtranscendence
3 years ago
I've certainly charged my Switch with the charger and cable that came with my 2018 MacBook Pro, and it never caused an issue. Nor is the Switch in question of particularly new vintage (it's closing in on three years old now).
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.
Note that the PD signal is supposed to be something like 2 volts.