The 5V from the power supply maintains enough juice to maintain the RTC and BIOS eprom.
If you turn the PS off, or disconnect the power from the supply to the wall then everything draws from the battery.
If there is a problem with the PS on that 5V then everything draws from the battery.
People who turn their PCs off but leave the PS on and plugged in will have their CR2032 last for years.
People who turn the PS off or disconnect the plug will have it last for months. 6 months is still a bit short.
When not in use I always turn off my computer and switch the surge arrest to off and my CR2032 is still good after 6 years. My wife does the same and her battery lasted for 10 years (and she only use her computer one hour a day).
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When not in use I always turn off my computer and switch the surge arrest to off and my CR2032 is still good after 6 years. My wife does the same and her battery lasted for 10 years (and she only use her computer one hour a day).
You are probably right. I never do that so I wouldn't know.
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TY
Peter