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Coffee Lover
Guest
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 Posted: Tue May 22, 2007 12:14 am Post subject: Motherboard Battery Voltage @ 4.08Volts? |
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Is a motherboard/bios Battery reading of "4.08 Volts" normal, low,
high??
It reads this in BIOS screen and in various xp-based software.
thanks |
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Paul
Guest
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| Posted: Tue May 22, 2007 12:15 am Post subject: Re: Motherboard Battery Voltage @ 4.08Volts? |
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Coffee Lover wrote:
| Quote: | Is a motherboard/bios Battery reading of "4.08 Volts" normal, low,
high??
It reads this in BIOS screen and in various xp-based software.
thanks
|
CR2032 is nominally a 3 volt battery. Here is a datasheet (see the
left hand side of the sheet):
http://www.panasonic.com/industrial/battery/oem/images/pdf/Panasonic_Lithium_CR2032_CR2320.pdf
If you have a multimeter, maybe you can verify the battery voltage
with that. The top of the battery is the positive terminal, and the
chassis of the computer is ground. So you shouldn't have to move
anything to get a reading. You can even do it while the computer
is running, if you're careful.
OK, I just popped open a spare computer, that I changed the CMOS
battery in a couple months ago. I touched the (+) of my meter
to the top of the battery, touched the (-) on my meter to the
shiny metal on a connector on the back of the computer, and it
reads 3.02 volts.
I cannot think of a good reason for a voltage like that to be
present. If the battery terminal really is at that voltage,
it would have exploded by now :-)
HTH,
Paul |
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