Maybe I could word it a bit better but I think you got the answer to your technical question.  When you are using a power strip (or surge protector), keep the power strip always on even when the computer is shutdown.  Because your computer still needs a small amount of power to run BIOS scheduled tasks and controlled features like wake on LAN, real-time clock. In case of power outage or no power available, the computer will use power from the coin cell battery during shutdown state.  However small, you may have stressed out your coin cell battery and may need to replace it soon.
I have a technical question. Well, I have a dell inspiron 3671 computer and every time before I turn on the power button on the housing, and just start the power supply from the power strip, for a moment before starting the computer with the power button on the housing there is a "start" of the computer for a moment, and then turns off. Of course, nothing disturbing happens during this procedure. Just when I turn on the power strip before starting the computer, it will start for a moment and that's it, and then I can start it normally. Can I disable this behavior in bios or is it better not to touch it?
AC power off