Your Thinkpad's default behavior is to start charging its battery as soon as it drops below 100% capacity and stop charging once it is at 100% capacity. Switching your battery charging mode changes these start & stop threshold. tp-battery-mode's default values can be found in
These values mean that your battery will start charging once the capacity drops below 85% and stop charging once it has reached 90% capacity. This should prolong your battery's lifespan while still giving you ample charge for portable needs.
Prolong Battery Lifetime
Switching to these new charging thresholds is as simple as:
systemctl start tp-battery-mode
To make sure that the change is persistent, enable the service. This will ensure that your charging mode is correct on boot:
systemctl enable tp-battery-mode
You can tailor the start/stop thresholds to fit your needs by modifying
/etc/tp-battery-mode.conf. If you modify these values, you will need to restart the tp-battery-mode service otherwise the changes will not be reflected until you reboot.
Reverting to default charging behavior
Sometimes you might want to charge your battery all the way to 100% If you wish to revert to the default Thinkpad charging behavior, you just need to stop the service:
systemctl stop tp-battery-mode
If you wish to revert to the default Thinkpad charging behavior completely, you will also need to disable the service:
systemctl disable tp-battery-mode