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Why Does CMOS Battery Keep Dying?

The CMOS battery keeps dying because it is not being charged. The CMOS battery is used to store the date and time when the computer is turned off. The CMOS battery will keep on dying if it is not being charged.

The CMOS battery is a power source for the motherboard of your computer. It is used to store time and date settings, as well as other information about the computer. The CMOS battery keeps dying because it has a limited life span and it can’t be replaced with a different type of battery.

It will eventually die, but you should get your laptop repaired before that happens so that you don’t have to replace the whole motherboard when it dies out on you.

CMOS Battery and How it’s Different from the Regular Batteries

CMOS batteries are not like regular batteries. They are more like small capacitors. They store power and then release it when the computer needs it.

The CMOS battery is a tiny capacitor that stores power for the computer and releases it when needed. It is not like a typical battery because it does not produce electricity, it only stores it.

What Causes CMOS Battery to Lose Power and When Can I Replace It?

The CMOS battery is a power source that provides power to the computer’s real-time clock and BIOS chip, which are essential for the computer to function. The CMOS battery also helps maintain the date and time settings if there is a power outage.

The most common cause of failure for CMOS batteries is age. The average lifespan of a CMOS battery is 3-5 years. However, this can vary depending on how often you use your laptop or desktop and how long it has been in storage. Other factors that may affect lifespan include exposure to extreme temperatures and high humidity levels.

How to Prevent the CMOS Battery from Drying Out and Losing Its Power

There are a few ways to prevent your CMOS battery from drying out and losing its power. One way is to keep the CMOS battery in a cool place. You can also use a desiccant to absorb any moisture that may accumulate on the CMOS battery.

Another way is to make sure that you don’t overcharge your CMOS battery. The last thing that you want is for it to be charged for too long and have it dry out faster than it normally would.


The CMOS battery is the power source for your computer’s real-time clock and keeps it running even when the computer is turned off. This battery can die from time to time, which means that your date and time may be off or you may have to reset your BIOS settings.

The three steps for finding and preventing this problem are:

1) Check if the CMOS battery is dying

2) Change the CMOS battery if it’s dying

3) Prevent a new CMOS battery from dying by adding a backup power supply.


Can a dead CMOS battery prevent startup?

No, a dead CMOS battery cannot prevent startup because there are other ways of powering the clock, such as using a backup battery or powering the clock from an external source.

A CMOS battery is a small, usually rechargeable, battery that provides power to the clock and other real-time clock functions in a computer. The CMOS battery is not needed for the computer to function, but it has to be charged before it can provide power. When the CMOS battery dies, it will not be able to provide power.

What happens if you put the CMOS battery backwards?

If you put a CMOS battery backwards it will discharge very quickly and may cause an electric short.

What should I do after changing the CMOS battery?

If you are having trouble with your CMOS battery, it is best to replace it with a new one. You should also make sure that you have backed up your BIOS settings before changing the CMOS battery.

A CMOS battery is a type of power supply that helps to maintain the date and time settings on your computer. If the CMOS battery is not working, your computer won’t know what time it is. This can cause all sorts of problems with your system’s operation, so it’s important to replace the battery if it starts to fail.