More and more people have begun to join the ranks of the bowed race. For heavy mobile phone control. No battery on the phone is equivalent to the end of the world. So putting a USB charging port in the car at this time is simply our savior. But the USB charger in the car is not as simple as everyone thinks, just plug it in and use it.

    1. Can it be charged with a USB port?

    In fact, the USB interface of many cars is used to transmit audio data, and the galvanometer of the car USB interface has 5V/2.1A and 5V/0.5A. And the input current required by many mobile phones is 5V/1A. See you, there are some car USB ports that cannot transmit power to the mobile phone. If the voltage is not reached, the voltage will be clear, and the current will obviously not meet the standard. In this case, charging the mobile phone will not only take a long time, but also make the mobile phone hot.

    2. The car should be charged when the flame is turned off?

    The USB car charger is actually a 5V carrier that turns the 12V of the cigarette lighter into a USB. It can charge the digital products of mobile phones and tablets. After connecting with the power strip, it can be used on low-power electrical appliances, but we do not need to unplug the USB mobile phone charger as soon as the flame is turned off, because as long as it is not connected to electronic products such as mobile phones, it has no current output, so it can be ignored .

     3. How much current does the USB car charger interface have?

     This statement is wrong, because the magnitude of the current is related to the voltage, and putting it on the car USB port has no relevant influence on him. So it is not how big the interface is, how big the current is.

     The output voltage on each car is different, so when we choose a USB car charger, we must be optimistic about the relevant data, whether it matches with our mobile phone and car interface. Be sure to choose the most suitable one. Don't choose inferior products or mismatched USB car chargers because of the price.