Stylus is recognized as wireless keyboard with wrong capacity

I have ASUS ExpertBook B5 Flip with built in stylus. Frequently when I use it I get a system notification that my wireless keyboard has only 1% of battery remaining, but in reality the stylus is fully charged and lasts for long time.

Even when charging inside the laptop it is listed as having 1% batery between devices in Settings/Power.

Is there a way how to correct the capacity of a device?

Please see this project GitHub - asus-linux-drivers/asus-stylus-driver: Linux complementary configurable driver for Asus Pen (atm are configurable only buttons on Asus Pen).

There is an install how too and there is a mention about the battery low 1% on the TODO list …

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