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No Warning CMOS battery Voltage

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Hello guys, I have a small problem that I am trying to figure out, I have AIDA64 installed on my pc and monitored separately

with a second screen, i recently noticed that the pc was not holding the correct time, My CMOS battery apparently died, however when i check my the CMOS battery voltage via Sensor Panel it says the battery is reading 3.360 volts, I know the battery is dead because i tested it and had it replaced, could someone explain why the sensor panel did not pick up it was dying? forgive me if this problem has been asked before, I am new to this forum and AIDA64 which i love.

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Can you please check if the battery voltage is reported by the BIOS Setup? What value can you see there?

Maybe what AIDA64 calls battery voltage is actually the +3.3V voltage rail or the 3VSB (+3.3V Standby) voltage rail coming from your PSU (Power Supply Unit) ?

Thanks,

Fiery

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Hi...as per my experience many motherboards did use a rechargeable battery to save the CMOS from being lost but this is no longer necessary because modern CMOS memory requires so little power to maintain valid data. A very small battery can be used to keep it valid for months to years.

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