The power supply of the mobile phone stand magnet is usually powered by the built-in rechargeable battery, and the user can connect the stand to the power supply through the USB interface for charging. The stand is usually equipped with a charging indicator, which will be charged when the power is low.
Some mobile phone stands are also equipped with wireless charging function, users only need to connect the stand to the power supply, they can provide wireless charging for the mobile phone, very convenient. Therefore, the power supply of the mobile phone stand magnet comes from the built-in rechargeable battery or external power supply, which is very convenient and flexible to use.