What does the battery on the computer motherboard do? Reads [1105] Published: 2021-02-01

Some people may see the title and wonder why there are batteries on the motherboard? Isn't the computer plugged in? Why do you need battery power? Is it useful? So today let me tell you what this humble battery is for!

1. System time

First of all, we call this battery a CMOS battery. Basically, there will be one on each motherboard. It supplies power to the active memory chip on the motherboard. However, if it has no power, it will reset the time after each boot, and it will not save the current time. You will find that on some archaic computers, the time is wrong every time they are turned on and reset to the date of manufacture. One of the major reasons is that the battery is dead or aging.

2. BIOS settings

BIOS is the setting of the motherboard. If you take down the battery, or if there is no power, the setting of the motherboard will be factory set. But it's also a good way to deal with BIOS problems. Some people will modify the parameters of the motherboard, resulting in the failure to turn on the computer, which can be solved in this way.

3. Boot screen

If the battery is dead, the system will not be able to read the hardware information of the computer, so it needs to press F2 or F1 to read it

Although this battery is only a small one, it also has a service life. Under normal circumstances, it has a service life of 5 years. If the quality is very good, it can be used. When the computer breaks down, it is not broken.