TLP battery thresholds does not work


I have TLP installed and enabled (through systemd). In its configuration, I set batter thresholds to 75%/80%. But seems it does not work. When plugged, my battery always gets fully charged, at least that is what indicated on the system tray. I have checked the status of TLP via systemctrl, it is active and the status info also says battery thresholds were applied. But it seems it is not effective. Why? I will appreciate any help to diagnose the problem. If more information is needed, please let me know.

TLP can only control the battery threshold settings in lenovo Thinkpads that contain specialized circuitry.