> "The Nintendo Switch 2 only ever charges at a maximum of 15 W(as far as I can tell)."

This is already higher than stated in legal EU-compliance documents [0], where the PD-charger is required to not provide more than 12W "in order to achieve the maximum charging speed"

Also interesting[0]: "TV mode requires output power of 54 watts. This is higher than the power requirements for charging given above. This product supports USB PD fast charging and is capable of being recharged by means of wired charging at voltages up to 15 volts"

According to this, the device will obviously only use the 20V/3A mode (=60 watts) for TV mode, and will not utilize it for charging. Whereas the provided charger (NGN-01) also supports a 15V USB-PD mode which MAY be used for charging.

I assume the device will request max. 15V/1A for charging then, adding up to 15W (not sure why they state the charger should not support "more than 12W"). However, I guess at 15V the majority of power in this state is going to the device and not the battery (they only have a single battery-cell which should be charged with 5V. If they want to charge the battery, they could also request 5V/3A from the charger)...

[0] https://www.nintendo.com/eu/media/downloads/support_1/ninten...