Can vehicle USB interface charge mobile phone?

I believe many people know that there will be a USB interface in the front row of our car cab. For convenience, many people will plug the data cable into the USB interface to charge their mobile phone when their mobile phone is out of power. In fact, I don't know if you have found that this interface not only charges slowly, but also has the possibility that the power will drop and the mobile phone will get hot. What is this Why? Next, let's analyze the reasons.

Let's first understand the mobile phone charger, mobile phone charger will have a charging head, which stores our mobile phone charging data, its lowest output current is generally not less than 1a.. But our car USB output current is lower than 1a, so when you charge, you will feel that the phone is charging very slowly, or even can't charge.

At this time, you may ask, this USB interface is not used to charge, so what is it used to do? So I'll tell you that this USB interface is used to connect external devices, such as USB disk, memory card and so on. Generally speaking, when we watch video and listen to music, we can watch it by connecting the USB interface on the car.

So we should never think that USB interface is used to charge mobile phones, because most of our car USB interfaces are used as audio and video data transmission.

So if you charge the mobile phone for a long time, it may cause damage to the parts in our car, and may also cause the damage of the mobile phone. Because if you charge the phone for a long time, it will cause the phone to burn, so it can also be damaged, and the tablet and other equipment can not be charged in such a place. Therefore, it is recommended that you do not use the USB on board Charged the phone.

Another way is that if we are shutting down the vehicle, it will damage the battery if we don't pull off the car charger. In fact, you don't have to worry about it damaging the battery at all. Because when we shut down, the power supply of the car is cut off directly, so we will not damage our battery.