Hopela, dans les commentaires, ya des explications de pourquoi on peut utiliser un chargeur d'ordi (en l'occurrence Lenovo) pour charger un smartphone

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Any type C powered output device is configured to use USB-PD after 15W standard charging.

USB-PD involves the charger and phone talking to each other to negotiate how much power the phone needs to charge.

Samsung phones tell the charger that it accepts how much it can accept and at what voltage and current rating.

You can use any type C charger for any device without hesitation!"