In the one month I have been using KDE Plasma 5 and occasionally I hover over my battery system tray icon. The battery health % keeps jumping all over the place. I have seen the following in roughly this order: 100% 98% 99% 96% 100% 98% 100% 97% 99% 100% Can the algorithm for this be looked at and improved if possible? STEPS TO REPRODUCE 1. Buy a new laptop and install KDE Plasma minimal 2. Hover over the battery system tray icon and note the battery health % 3. Use your computer as you would for a couple days 4. Hover over the battery system tray icon and note the battery health % OBSERVED RESULT Not guaranteed but the health will probably say a number between 95% and 100%. EXPECTED RESULT Battery health should be accurate. It should not be possible for the battery to lose up to 5% of battery health in the matter of a few days when it is only used a couple hours a day. At which point the laptop battery would be dead within the span of a month or two. Let alone for the battery health to improve itself. SOFTWARE/OS VERSIONS OS: Arch Linux x86_64 Kernel: 5.14.15-arch1-1 (available in About System) KDE Plasma Version: 5.23.2 KDE Frameworks Version: 5.87.0 Qt Version: 5.15.2 Graphics Platform: X11
All it does is look at the last full charge and compare that to the design capacity of the battery. This can vary from time to time. In any case, this data comes straight from UPower, so you might want to report an issue there.