As of Linux v5.17, the thinkpad_acpi kernel module has support for battery start/stop thresholds, inhibit charge and force discharge.
These are rough equivalents of tpacpi-bat userspace commands in thinkpad_acpi.
# tpacpi-bat -s ST 1 90 => echo 90 | sudo tee /sys/class/power_supply/BAT0/charge_control_start_threshold
# tpacpi-bat -s SP 1 90 => echo 90 | sudo tee /sys/class/power_supply/BAT0/charge_control_end_threshold
# tpacpi-bat -s ST 2 90 => echo 90 | sudo tee /sys/class/power_supply/BAT1/charge_control_start_threshold
# tpacpi-bat -s SP 2 90 => echo 90 | sudo tee /sys/class/power_supply/BAT1/charge_control_end_threshold
# tpacpi-bat -s FD 1 1 => echo force-discharge | sudo tee /sys/class/power_supply/BAT0/charge_behaviour
# tpacpi-bat -s FD 1 0 => echo auto | sudo tee /sys/class/power_supply/BAT0/charge_behaviour
# tpacpi-bat -s IC 1 1 => echo inhibit-charge | sudo tee /sys/class/power_supply/BAT0/charge_behaviour
# tpacpi-bat -s IC 1 1 => echo auto | sudo tee /sys/class/power_supply/BAT0/charge_behaviour
# tpacpi-bat -g ST 1 => cat /sys/class/power_supply/BAT0/charge_control_start_threshold
# tpacpi-bat -g SP 1 => cat /sys/class/power_supply/BAT0/charge_control_end_threshold
# tpacpi-bat -g FD 1 => grep -q '\[force-discharge\]' /sys/class/power_supply/BAT0/charge_behaviour && echo yes || echo no
# tpacpi-bat -g IC 1 => grep -q '\[inhibit-charge\]' /sys/class/power_supply/BAT0/charge_behaviour && echo yes || echo no
There may be differences in implementation between tpacpi-bat and thinkpad_acpi. In general, instead of using tpacpi-bat + acpi_call, users should prefer using the thinkpad_acpi kernel module.
The acbreak parameter to FD appears to be missing in thinkpad_acpi, but it usually doesn't work properly in tpacpi-bat anyway due to bugs or changes in the firmware driver.
Exposes ACPI interface for battery controls.
- force discharge
- inhibit charge
- start charge threshold
- stop charge threshold
This project is licensed under the GPLv3. See COPYING for details.
Copyright 2011-2016 Elliot Wolk
install.plinstallsacpi_callfrom git and copiestpacpi-batto /usr/binacpi_callis required (https://github.com/teleshoes/acpi_call.git)tpacpi-bathas no other requirements besides perl; put it where you like
- Edit desired thresholds in
examples/tpacpi.conf.d - Copy
examples/tpacpi.serviceto systemd unit dir (/usr/lib/systemd/system) - Copy
tpacpi.conf.dto/etc/conf.d/tpacpi
There is an unofficial, community-maintained list of supported ThinkPads here: Supported Hardware
Usage:
Show this message:
tpacpi-bat [-h|--help]
Get charge thresholds / inhibit charge / force discharge:
tpacpi-bat [-v] -g ST <bat{1,2}>
tpacpi-bat [-v] -g SP <bat{1,2}>
tpacpi-bat [-v] -g IC <bat{1,2,0}>
tpacpi-bat [-v] -g FD <bat{1,2}>
Set charge thresholds / inhibit charge / force discharge:
tpacpi-bat [-v] -s ST <bat{1,2,0}> <percent{0,1-99}>
tpacpi-bat [-v] -s SP <bat{1,2,0}> <percent{0,1-99}>
tpacpi-bat [-v] -s IC <bat{1,2,0}> <inhibit{1,0}> [<min{0,1-720,65535}>]
tpacpi-bat [-v] -s FD <bat{1,2}> <discharge{1,0}> [<acbreak{1,0}>]
Set peak shift state, which is mysterious and inhibits charge:
tpacpi-bat [-v] -s PS <inhibit{1,0}> [<min{0,1-1440,65535}>]
Synonyms:
ST -> --st|--startThreshold|--start|st|startThreshold|start
SP -> --sp|--stopThreshold|--stop|sp|stopThreshold|stop
IC -> --ic|--inhibitCharge|--inhibit|ic|inhibitCharge|inhibit
FD -> --fd|--forceDischarge|fd|forceDischarge
PS -> --ps|--peakShiftState|ps|peakShiftState
Options:
-v show ASL call and response
<bat> 1 for main, 2 for secondary, 0 for either/both
<min> number of minutes, or 0 for never, or 65535 for forever
<percent> 0 for default, 1-99 for percentage
<inhibit> 1 for inhibit charge, 0 for stop inhibiting charge
<discharge> 1 for force discharge, 0 for stop forcing discharge
<acbreak> 1 for stop forcing when AC is detached, 0 for do not
[] means optional: sets value to 0