KDE plasma max charging limit
//check if your laptop supports it ! whith this
sudo tlp-stat --battery
--- TLP 1.3.1 --------------------------------------------
+++ Battery Features: Charge Thresholds and Recalibrate
natacpi = inactive (laptop not supported)
tpacpi-bat = inactive (laptop not supported)
tp-smapi = inactive (laptop not supported)
[...]
/sys/class/power_supply/BAT0/cycle_count = (not supported)
[...]