(Originally posted to the KDE list but now I don't think it's a KDE issue).
Using the Status and Notifications widget used to show the battery level in my Bluetooth mouse. Now it just says there are no batteries. It's a desktop, so there are indeed no batteries in the system, but there are in the mouse.
One responder suggested trying "upower -d". This shows no battery either.
Any ideas? This used to work for me.
poc