This is the second time since I’ve installed Zorin that the OS thinks I only have 9% battery left (it’s really 99% and fully charged). The system even says fully charged, but also reads 9%. If I unplug, it warns me that battery is low. Rebooting takes it back to 99%.

A computer screen displays power settings with options for battery level, power mode, and power saving features in a user interface window.