The CyCM1 Dell ROHS Lithium Coin CMOS Battery is a compact, round lithium cell designed to provide reliable backup power for the CMOS memory of Dell computers. Its construction complies with RoHS directives, ensuring the battery is free from hazardous substances such as lead, mercury, and cadmium. This battery delivers the stable voltage required to retain BIOS settings and system clock information when the main power source is disconnected. Ideal for replacement or upgrade in Dell workstations, laptops, and servers, the CyCM1 offers consistent performance and a long shelf life, supporting uninterrupted operation of critical system functions.