Apply power saving settings manually and control ThinkPad battery features.
sudo apt install tlp
For ThinkPads install:
sudo apt install acpi-call-dkms
tlp start|true|bat|false|ac|usb|bayoff|chargeonce|discharge|setcharge|fullcharge|recalibrate|diskid
sudo tlp setcharge 75 80 BAT0
Check statistics
sudo tlp-stat -b
$ sudo tlp recalibrate
Currently discharging battery BAT0:
voltage = 11750 [mV]
remaining capacity = 62340 [mWh]
remaining percent = 77 [%]
remaining time = 192 [min]
power = 19411 [mW]
state = Discharging
force discharge = 1
Press Ctrl+C to cancel.
$ sudo tlp fullcharge
Setting temporary charge thresholds for BAT0:
stop = 100
start = 96
Charging starts now, keep AC connected.