Created attachment 186490 [details] Battery critical pop-up SUMMARY When both removable batteries are removed, Plasma shows a "Battery Critical" warning even though the system is powered by AC. I have a portable system equipped with two removable batteries. When both batteries are removed but the system remains plugged into AC power, Plasma incorrectly shows a pop-up warning: Battery Critical (0% remaining). Please save your work. This message shouldn’t appear in this situation, since the system is not in a critical state — it is receiving stable power from AC. It looks like PowerDevil interprets the absence of any detected battery as a 0% charge condition, triggering the critical battery warning. However, if AC power is present, no such warning should be displayed. STEPS TO REPRODUCE 1. Plug the system to AC power and insert both batteries 2. Remove both batteries 3. Warning pops-up saying battery in critical state OBSERVED RESULT See screenshot. EXPECTED RESULT No critical battery warning should be displayed if the system is powered by AC. The message should only appear when the system is genuinely running out of power. SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE Plasma Version: 6.4.4 KDE Frameworks Version: 6.17 Qt Version: 6.8.3