How does a CMOS battery work?
Also if u know, why do not have to replace a CMOS battery in already built computer systems?
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Also if u know, why do not have to replace a CMOS battery in already built computer systems?
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These days, the CMOS battery may be a Lithium coin cell.
This will have a limited life and will need replacing at some point.
Usually this is 3-5 years, by which time many people have replaced the pc or motherboard anyway.