How long do CMOS batteries last in a PC?

The CMOS battery is an essential component of your PC that you're not likely to think about until it fails, but how long can you expect it to last?
XDA Developers

A dead CMOS battery made my PC act haunted for a week before I worked out what was wrong

A dying CMOS battery is pretty rare among PCs built within the last 5 years, since the small watch batteries that are used ...
SlashGear

How To Clear Your Computer's CMOS

Not all computer troubleshooting can be handled within your operating system or by troubleshooting specific components. Some key computer functions are governed by the CMOS (Complementary ...
Ars Technica

When do you replace the CMOS battery on your laptop?

I've got a 7 year old Lenovo Thinkpad x230 and my gf has the same year Dell Inspiron. Thinking of replacing the CMOS batteries. They both work just fine after replacing spinning rust with SSDs. The ...

Desktop wouldn't boot, the cause was a 0.7V coin battery

The results of yesterday's repair. I had planned to spend the weekend repairing, but I was invited to the park and practiced ...