Why should I charge the ipad pen?

Simply talk about the working principle of apple pencil and you will know why you need to charge. Traditional capacitance pen realizes the transmission of electrical signals through conductive materials, while apple pencil actively emits electromagnetic signals, improves the writing accuracy by transmitting signals in multiple frequency bands through cross scanning and analysis, and automatically corrects the signals to adapt to different devices, so the accuracy of apple pencil can be said to be pixel-level. In addition, in order to simulate the writing characteristics of different tools (such as simulating brush calligraphy), gyroscopes are added in the pen, or even more than one. Therefore, apple pencil is not only a so-called pen, but also a sophisticated electronic product, and it is not surprising to charge it.