GNOME battery charge control
As someone who has to use a laptop for work, I keep my laptop plugged in 8 hours or more a day, 7 days a week. The laptop's battery during these days would discharge and charge, slowly degrading the battery because only the last ~ 20% would be charged and discharged. To remedy this issue some devices now have charge thresholds where a user or firmware can configure a charge limit to stop the battery from getting constantly charged.
The most commonly found solution is to set a stop charge limit at 80% of the battery capacity. (Green part is never charged)