do without
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There is only one digital board that can be charged, that is, WH850, which can be connected wirelessly, so battery power is needed when wireless use, charging is when wired to connect the computer is charging, no skills other models can only be wired to connect, no need to charge
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wacom's pen is called the electromagnetic pen, which is a computer, a chip in the digital board and the electromagnetic board, and uses the pen to cut the magnetic field to generate electrical signals into data. So the pen doesn't need its own battery.
You don't have to be fully charged, you can have electricity, but full charge is better for its life