Frequent CMOS Battery Changes?

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  1. Posts : 4,094
    Windows 7 HP 64 - Windows 10 Pro - Lubuntu
       #21

    TV2 said:
    The 5V from the power supply maintains enough juice to maintain the RTC and BIOS eprom.
    If you turn the PS off, or disconnect the power from the supply to the wall then everything draws from the battery.
    If there is a problem with the PS on that 5V then everything draws from the battery.
    People who turn their PCs off but leave the PS on and plugged in will have their CR2032 last for years.
    People who turn the PS off or disconnect the plug will have it last for months. 6 months is still a bit short.
    When not in use I always turn off my computer and switch the surge arrest to off and my CR2032 is still good after 6 years. My wife does the same and her battery lasted for 10 years (and she only use her computer one hour a day).
      My Computers


  2. Posts : 18,262
    Win 10 Home 10.0.19045.1806 (x64) [22H2]
       #22

    ignatzatsonic said:
    Thanks for that Megahertz;

    I wasn't aware of VBAT

    I just checked my HWInfo64.

    It shows VBAT at 3.104.

    This is on a PC that is running 16 hours a day. The battery is the one supplied with the board. Nearly 5 years old.

    27 or 28 thousand hours.



    AIDA64 Extreme can do that also... here's an s/s of my OSD from AIDA64


    Frequent CMOS Battery Changes?-image1.png
      My Computer


  3. Posts : 7,137
    Windows 10 Pro 64 bit
    Thread Starter
       #23

    Thanks to all for your help. I never thought such a simple query would create so much interest!
      My Computers


  4. TV2
    Posts : 2,023
    W10 Pro 20H2
       #24

    Megahertz said:
    When not in use I always turn off my computer and switch the surge arrest to off and my CR2032 is still good after 6 years. My wife does the same and her battery lasted for 10 years (and she only use her computer one hour a day).
    You are probably right. I never do that so I wouldn't know.
      My Computers


 

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