How often should I replace my CMOS battery, and what does it do, anyway?

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In all desktop PCs there is a battery – what is the purpose of this battery and how long does it last before it has to be replaced? Does the replacement of this battery affect the BIOS of the computer? I’ve had a PC for 6  years now and never replaced the battery.

Actually all PCs, desktop and laptop alike, have a battery like this, typically referred to as the “CMOS” battery. It serves an important function, even though it’s actually possible on most machines to run without
one … which quickly becomes annoying.

The good news is that, as you’ve seen, they typically last for years.

Read moreHow often should I replace my CMOS battery, and what does it do, anyway?