Magic Keyboard with Touch ID stuck on 100% battery

After charging the Magic Keyboard with Touch ID through a usb hub the battery percentage has been showing 100% for days. The keyboard works just like normal, there haven't been any problems with writing nor with Touch ID, so this problem is right now about not being able to see the correct percentage.

I noticed in system report under Bluetooth that the battery percentage for the keyboard was 100% there too but there is nothing about my Magic Trackpad's battery percentage, I wonder why that is? (Is this to be expected normally?).

(Batterinivå = Battery percentage | Ansluten = Connected)

I've tried a few things: turning off and on the keyboard, disconnecting and reconnecting, unpaired and repaired the device, turning off and on bluetooth, connecting through usb, restarting the computer to reset PRAM, SMC etc.

None of this has worked.

I'm not sure if deleting some plist stuff will work, I haven't wanted to tried that,

neither have I wanted to try the command "sudo pkill bluetoothd" in terminal, I feel a little

uneasy about it.

Should I try these two last steps, perhaps?

Anyway, I would appreciate some information and input or ideas

about how I should solve this. Any help is welcome and very much appreciated.