Many electronic products have USB interfaces, but many people think that this interface is only for charging. The person who thinks so is wrong. Because this USB interface has other uses. Let's use iStick TC100W as an example.
It is convenient for a battery to have a micro USB interface. The first is charging. As long as you have a USB cable, you can charge the battery. But if you want less time to fill the battery, it is recommended that you use the battery charger. Then there's the firmware. Many products used for a long time, and its firmware will be old. You can update the firmware at this time. The firmware of Eleaf iStick TC100W can be upgraded. You connect the computer via the USB cable and then you can upgrade the firmware. The USB interface also has many uses for you to study.
