Battery thresholds are reset after reboot to Windows
It is a dual-boot Thinkpad with the latest Manjaro KDE and Windows 10. In Manjaro, the battery charge thresholds are manually set in KDE's System Settings > Power Management > Advanced Settings > Charge Limit to 40% and 80%. Then tlp-stat --battery shows
/sys/class/power_supply/BAT0/charge_start_threshold = 40 [%] /sys/class/power_supply/BAT0/charge_stop_threshold = 80 [%]
Rebooting Manjaro does not change these. The settings are preserved and actually work.
However once the machine is booted into Windows 10 and then goes back to Manjaro, those settings are reset in both GUI of System Settings and in tlp-stat --battery:
/sys/class/power_supply/BAT0/charge_start_threshold = 96 [%] /sys/class/power_supply/BAT0/charge_stop_threshold = 100 [%]
So it looks like Windows resets the thresholds to their defaults (I guess) but Manjaro or KDE doesn't restore the thresholds according to the settings chosen in its System Settings above.
Is this a limitation of the Charge Limit functionality in KDE now or is it a bug?