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Old 07-21-2006, 07:31 PM   #1
RPatrick6
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Default What happens when your motherboard battery goes dead ?

How long do those batteries last in the motherboard and what happens when they die ?

My computer's clock has been losing the correct time for the last two days and I am wondering if this is the problem.
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Old 07-21-2006, 07:33 PM   #2
ScrapSilicon
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Default What happens when your motherboard battery goes dead ?

cr2032.. cheap for a possible fix..gl
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Old 07-21-2006, 08:02 PM   #3
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Default What happens when your motherboard battery goes dead ?

You take the battery to radio shack and get a new one. They last real long as long as you have the system plugged in. I haven't changed my bios battery for a couple years.
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Old 07-21-2006, 08:20 PM   #4
JoeFahey
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Default What happens when your motherboard battery goes dead ?

Go to Radio Shack, show them the battery, and pay about $4 for a new one. Make sure you get the same battery though, if you don't it will do damage.
I just recently had to replace the battery on my old gateway. It's about 3+ years old. You don't need to really be concerned about it for atleast 2 years. And sometimes it will be much longer then this. One thing you might want to purchase is a multimeter (voltmeter). It will give you a reading on your battery and tell you if it's dead or not, or how much juice is left in it.



Quote:
Originally posted by: Baked
You take the battery to radio shack and get a new one. They last real long as long as you have the system plugged in. I haven't changed my bios battery for a couple years.
I've always refered to them as cmos batteries. Am I wrong?
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Old 07-21-2006, 08:37 PM   #5
soydios
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Default What happens when your motherboard battery goes dead ?

They power the CMOS, yes.
Quick and cheap way to tell, as others have mentioned, is by going to Radio Shack and buying a replacement battery.
These batteries last a long time, though. I have an old Gateway 2000 machine from 1994 (Pentium-I Socket-5 90MHz FTW!), that was sitting in the garage for 4+ years. I pulled it back into the house, booted it up, checked the BIOS, and the time was only 10 seconds slow.
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Old 07-21-2006, 08:59 PM   #6
RPatrick6
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Default What happens when your motherboard battery goes dead ?

Thanks for all the replies !

To radio shack I go...
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Old 07-21-2006, 09:20 PM   #7
Raincity
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Default What happens when your motherboard battery goes dead ?

One way to tell is to unplug the pc for a couple of hours then plug it back in and power it back up. If it takes 30 seconds before it will power up then the battery is ready to go.
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Old 07-22-2006, 08:27 AM   #8
JimPhelpsMI
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Default What happens when your motherboard battery goes dead ?

Hi, The battery could last up to about 8 years as there is practically no current draw by the CMOS SETUP Mem. Usually you start losing the Time and Date, probably by design as a warning that the batt is going down. Later you start losing everything in the SETUP. Every time you leave it off for a couple of hours the time and date are lost. BIOS today usually has a feature to tell you the voltage of the batt. New is 3 Volts and probably good in most MBS down to about 2.5 volts.

Good Luck, Jim
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Old 07-22-2006, 08:31 AM   #9
Blain
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Default What happens when your motherboard battery goes dead ?

I got 20 of them off ebay for $8.50 shipped. They come in very handy when working on older systems, some newer ones too.
Yes... "CR2032" is the key search term to look for.
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