redserv Posted December 29, 2015 Share Posted December 29, 2015 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. Quote Link to comment Share on other sites More sharing options...
Fiery Posted December 29, 2015 Share Posted December 29, 2015 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 Quote Link to comment Share on other sites More sharing options...
NealXu Posted December 11, 2017 Share Posted December 11, 2017 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. printed circuits assembly Quote Link to comment Share on other sites More sharing options...
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