What is a CMOS battery? What are its functions? - Quora
Are there different types of CMOS batteries? - Quora
What is a CMOS Battery? How to Remove and Replace One in a Laptop | HP Store Singapore
Troubleshoot a BIOS or CMOS 'Checksum' Error
Hi, does anyone know how to replace the CMOS battery in a Lenovo Legion Y520? I have done this on another computer before but there was a tab that allowed you to