Why does my desktop computer require a battery on the motherboard?

robert December 17, 2010

What does the battery do? Is it needed? What happens if it goes dead?

  1. Mafuj Wooden
    December 18, 2010 at 11:57 am

    motherboard have a battery. when this battery lose his charge then you face the problem. in this position you should change the battery.

    • RobskiRS
      January 6, 2011 at 2:56 am

      what problem do I face if battery loses its charge? this is what i'm tring to find out what it does. can I throw it out or not?

      • Tina
        January 6, 2011 at 3:01 am


        when the battery is dead or when you remove it, the computer will not remember its settings. On every boot, the computer will enter the BIOS and you have to enter basic settings in order to continue the boot process. To avoid this, you should replace the battery before it is completely dead.

  2. Tina
    December 18, 2010 at 1:36 am


    the battery on your motherboard is called CMOS battery.

    CMOS stands for Complementary Metal Oxide Semiconductor. It provides power to the CMOS memory, which stores the BIOS settings. The BIOS contains information about the system configuration. The CMOS memory also maintains the real time clock.

    The battery is required to store these settings even when the computer is turned off and disconnected from power. You realize that the battery goes bad if your system does not maintain a correct date and time or forgets which type of hardware is installed.