battery_thresholds.service

# This simple systemd unit sets battery thresholds to preserve battery life on Lenovo Thinkpad
# (works on T470 but might work for others models)
#
# use this command to create the unit file:
#
#    systemctl edit --force --full battery_thresholds.service
#
# to enable the service and start it now, type:
#
#    systemctl enable battery_thresholds.service --now
#
[Unit]
Description=Set battery thresholds to preserve battery life on Lenovo Thinkpad
After=network.target
RequiresMountsFor=/sys

[Service]
Type=oneshot
ExecStart=sh -c 'echo 85 > /sys/class/power_supply/BAT0/charge_control_end_threshold'
ExecStart=sh -c 'echo 85 > /sys/class/power_supply/BAT1/charge_control_end_threshold'
ExecStart=sh -c 'echo 30 > /sys/class/power_supply/BAT0/charge_control_start_threshold'
ExecStart=sh -c 'echo 30 > /sys/class/power_supply/BAT1/charge_control_start_threshold'