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See CMOS Voltage

E

Elevation

Weaksauce
Joined
Oct 28, 2021
Messages
84
Hi, I have an MSI X670E Carbon Wifi motherboard, but I don't know of any program that can show the CMOS battery voltage.

With HWINFO 64, the Vbat parameter doesn't appear; I don't know of any program that displays the voltage.

Do you know how often the battery should be changed? The motherboard is almost two years old, and changing it isn't "easy."

Thanks
 
They're usually good for several years or more, so don't worry... Also, they aren't hard to change as they're just general button batteries (cr2032).
 
Elevation said:
Hi, I have an MSI X670E Carbon Wifi motherboard, but I don't know of any program that can show the CMOS battery voltage.

With HWINFO 64, the Vbat parameter doesn't appear; I don't know of any program that displays the voltage.

Do you know how often the battery should be changed? The motherboard is almost two years old, and changing it isn't "easy."

Thanks
Click to expand...

You should change it when you lose bios settings for no reason. Tends to be somewhere between 8 and 15 years.
 
I have 20+ year old boards that the battery is still good on. I was going though some of the boards in my collection, and I was honestly suprised they still were saving.
 
and for every years and year and years board, there are a few that only last a year or two.
if nothing it reading it on that board youll have to pull and test it to be sure. if you suddenly start getting issues posting or random bsods, check it.
 
I hope the battery doesn't fail, as I have to disassemble the entire motherboard trim and remove some rear screws. I think I can't access them all from the case (Corsair ICue 7000X RBG White) or I'm misplaced.

Can the front trim be cut without damaging the motherboard? I just want the battery to be visible.
 
Elevation said:
I hope the battery doesn't fail, as I have to disassemble the entire motherboard trim and remove some rear screws. I think I can't access them all from the case (Corsair ICue 7000X RBG White) or I'm misplaced.

Can the front trim be cut without damaging the motherboard? I just want the battery to be visible.
Click to expand...
I have replaced one battery in the hundreds of builds I have done over the years. Guess what? The battery was not the problem. I wouldn't stress out over it if I were you.
 
I wouldn't worry about it. But if it does need to be changed, it's probably in heat shrink with a couple twisted wires going to a connector on the board. Seems to be the way they do nowadays. Suppose they figure most won't need to bother, or they'll just rma the board.
 
pendragon1 said:
for every years and year and years board, there are a few that only last a year or two
Click to expand...
True dat. About a month ago the CMOS CR2032 battery died on my friend's B550 board. He got that board in early 2021 and the battery was already dead. I replaced it and the system was good to go. Cuz yeah usually I see CMOS batteries last anywhere from 7-15 years, so it was confusing to see one crap out so early.

I had a weird situation with my X99 board (which I got shortly after launch in 2014) where the CMOS battery it came with had enough charge to retain UEFI settings, but not enough charge to keep the clock at the right time. When I replaced the battery I had no more issues with the motherboard keeping the time and date.
 
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