Xiaomi Mi 20W Wireless Car Charger Quick Start Manual page 3

3. In order to achieve a better charging performance, make sure the phone is
properly placed onto the wireless car charger, so it is close to the charging
surface (refer to the figure below). When the indicator blinks, it indicates that the
charger is in protection mode. Please check whether there is a metal object on
the charging surface or on the back of the phone. If the issue persists, please
contact after sales service. *
* When a phone that does not support wireless charging is placed onto the car charger, the
indicator will blink.
4.When you need to remove the phone from the wireless car charger, press the
button to release the arms. The arms will open, and release the phone, then
charging will stop.
Note: When the car's cigarette lighter or power port are not supplying power, the
phone can be removed directly.