Sony CMOS Battery For Desktop/PC/Laptop-5 Pieces

A CMOS battery, also known as a motherboard battery or BIOS battery, is a small coin-shaped battery found on computer motherboards. It serves as a power source for the complementary metal-oxide-semiconductor (CMOS) memory chip, which stores the BIOS (Basic Input/output System) settings and system configuration data. It ensures that these settings are retained even when the computer is powered off or disconnected from a power source. Over time, it may lose its charge, leading to issues such as incorrect date and time, BIOS errors, or system boot failures. Replacing the CMOS battery involves removing the old battery and inserting a new one, typically a CR2032 lithium coin cell battery. It is a crucial component in maintaining the stability and functionality of a computer’s BIOS settings.