Here is the relevant part of /etc/tlp.conf:
# Battery Care -- Charge thresholds # Charging starts when the charge level is below the START_CHARGE_THRESH value # when the charger is connected. It stops when the STOP_CHARGE_THRESH value is # reached. # Required hardware: Lenovo ThinkPads and select other laptop brands are driven # via specific plugins, the actual support status is shown by tlp-stat -b. # For more explanations and vendor specific details refer to # https://linrunner.de/tlp/settings/battery.html # Notes: # - ThinkPads may require external kernel module(s), refer to the output of # tlp-stat -b # - Vendor specific parameter value ranges are shown by tlp-stat -b # - If your hardware supports a start *and* a stop threshold, you must # specify both, otherwise TLP will refuse to apply the single threshold # - If your hardware supports only a stop threshold, set the start value to 0 # BAT0: Primary / Main / Internal battery (values in %) # Note: also use for batteries BATC, BATT and CMB0 # Default: <none> #START_CHARGE_THRESH_BAT0=65 #STOP_CHARGE_THRESH_BAT0=75 # BAT1: Secondary / Ultrabay / Slice / Replaceable battery (values in %) # Note: primary on some laptops # Default: <none> #START_CHARGE_THRESH_BAT1=65 #STOP_CHARGE_THRESH_BAT1=75 # Restore charge thresholds when AC is unplugged: 0=disable, 1=enable. # Default: 0 #RESTORE_THRESHOLDS_ON_BAT=1 # Control battery care drivers: 0=disable, 1=enable. # Default: 1 (all) #NATACPI_ENABLE=1 #TPACPI_ENABLE=1 #TPSMAPI_ENABLE=1
