Charging the mobile phone every night is an indispensable ritual before going to bed for most people. But is it necessary to unplug the charger after charging? The answer is yes. If the charger was left plugged without charging the phone for too long. It will become a fire hazard.
When the charger is left on the socket, it will still work even if the phone is not connected. On the one hand, the charger is a device that transforms and rectifies current. So as long as it is connected to the circuit board, current will be generated even if there is no load. This will cause unnecessary power consumption. On the other hand, the charger converts high-voltage alternating current into low-voltage direct current. Long-term plugging will continue to heat up the charger, which will accelerate the aging of the charger and easily cause a short circuit fire.
Plug in your phone or power first when charging?
When using non-original chargers and ordinary power strips for charging, if you plug in the phone first and then plug in the power source, a relatively large voltage pulse will be generated at the moment of charging, which may harm the phone.
Similarly, after fully charging a mobile phone by using low quality chargers, unplugging the charger first can produce a reverse instantaneous current. If you do not unplug the phone first, it may also damage the phone.
Of course, if you use the good quality charger to charge phone, the steps of plugging in and unplugging first have little effect on the phone.
However, it is best to develop the good habit of: plug in the power first and then the phone when charging; unplug the phone first and then remove the charger from plug base after it is fully charged.
Post time: Aug-13-2021