CMOS Battery lifespan

  1. #1
    Falcon79 is offline Valued Member

    CMOS Battery lifespan

    Hi,
    Does taking a CMOS battery out of a motherboard stop its energy drain.
    I ask this because I have a second computer that is not used often.
    Exactly how long is the CMOS battery lifespan?
    Thanks.

  2. #2
    brain_damage is offline D-A-L Team Member (UK)
    a CMOS battery can last years.

    taking the battery out will loose all settings of time date etc

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