Powertop systemd service Status - Not sure if it is working

$ sudo systemctl status powertop -l
○ powertop.service - Extend the battery life of laptop
     Loaded: loaded (/lib/systemd/system/powertop.service; enabled; vendor preset: enabled)
     Active: inactive (dead) since Wed 2022-11-02 17:39:20 CET; 2min 4s ago
    Process: 192272 ExecStart=/usr/sbin/powertop --auto-tune (code=exited, status=0/SUCCESS)
   Main PID: 192272 (code=exited, status=0/SUCCESS)
        CPU: 3.266s

Nov 02 17:39:15 lamy powertop: glob returned GLOB_ABORTED
Nov 02 17:39:18 lamy powertop: Leaving PowerTOP
Nov 02 17:39:20 lamy powertop: Cannot load from file /var/cache/powertop/saved_parameters.powertop
Nov 02 17:39:20 lamy powertop: File will be loaded after taking minimum number of measurement(s) with battery only
Nov 02 17:39:20 lamy powertop: Cannot load from file /var/cache/powertop/saved_parameters.powertop
Nov 02 17:39:20 lamy powertop: File will be loaded after taking minimum number of measurement(s) with battery only
Nov 02 17:39:20 lamy powertop: To show power estimates do 113 measurement(s) connected to battery only
Nov 02 17:39:20 lamy systemd: powertop.service: Deactivated successfully.
Nov 02 17:39:20 lamy systemd: Finished Extend the battery life of laptop.
Nov 02 17:39:20 lamy systemd: powertop.service: Consumed 3.266s CPU time.