


CMOS batteries differ from the typical battery or cell you are used to seeing on the cover of computers. Now, you must understand that CMOS chips are responsible for maintaining the internal system date and time. These chips typically house specific hardware settings and information about your system memory or the hard drive in use on your PC and even security settings – especially those for your BIOS (Basic Input Output System). Almost all laptops are equipped with a CMOS (Complementary Metal Oxide Semiconductor) chip.
