Hello, Samsung s20 does not support 45w fast charge. Therefore, the Samsung s20 cannot activate 45w fast charge.
The Galaxy S20 and Galaxy S20 both support 25W fast charging, as well as 15W wireless charging and wireless reverse charging.
Extended information:
The Galaxy S20 is available in three colors: Fantasy black, Reverie Grey and Oxygen blue. Screen size: 6.7 inches. Screen material: Dynamic AMOLED. Screen color number: 16 million color number. Screen resolution: 3200 x 1440 pixels. Pixel density: 524PPI. Touch mode: Capacitive screen (multi-touch). Touch features: Gesture operation. Screen features: Support HDR10, maximum refresh rate 120Hz.
The Samsung S20 plus phone cannot activate the 45 watt fast charge, because the built-in chip and related charging power supply of this phone cannot support high power charging, and can only be charged and used with 25 watts of power using the original charger that comes with the phone