Most importantly, a CMOS battery is crucial to maintain the RTC (Real Time Clock) on your computer. This allows proper tracking of time even when your PC is powered off.

Some key computer functions are governed by the CMOS (Complementary Metal-Oxide-Semiconductor), a chip on your motherboard powered by a small battery.

A dead CMOS battery or outdated BIOS can also cause boot issues. In addition, faulty RAM and Power Supply Units are also responsible for this problem. Windows computer boots after several attempts ...

I had a co-worker tell me that he had an old computer that the "trickle charger" died on him, thus causing his CMOS to die and screw up his BIOS. I have never heard of anything like a "trickle ...

First when I was getting BIOS reset I thought the battery was bad - so I changed the battery and there seems to be some problem since every time I unplug the computer it loses all the settings.It ...

The PS5 Pro teardown reveals that Sony has implemented an easily replaceable CMOS battery If you’re not familiar with what a CMOS battery is, iFixit explains it quite thoroughly.