what is CMOS battery and What the work of CMOS... | Passion for Learn

Testing the Voltage of Batteries Computer System unit needs CMOS battery which help retain settings of the BIOS or UEFI which also includes the date and time. Testing of its voltage will help ensure proper function of the BIOS or UEFI. Testing the voltage of device batteries such as used in a cable tester is important as well. More importantly, the power supply unit pins need to be checked with their voltages. It is very important to note the proper handling of the testing device such as multite