Maintains BIOS settings, system clock, and motherboard memory
Available with 2-pin connector and wrapped cable design
Stable power supply for RTC and BIOS functions
High-quality lithium coin cell for long lifespan
Direct replacement for faulty or drained CMOS batteries
Compatible with many HP, Dell, Lenovo, Acer, ASUS, Toshiba, and MSI laptops
Laptop CMOS battery is a small internal battery used to power the BIOS memory and real-time clock (RTC) on a laptop motherboard. It helps retain important system settings such as date, time, BIOS configuration, and hardware information even when the laptop is completely powered off or the main battery is removed. A faulty CMOS battery can cause issues such as incorrect time and date, BIOS reset errors, boot warnings, and startup problems. This replacement RTC battery is built using a high-quality lithium coin cell with insulated wrapping and connector cable for safe installation and long-lasting performance. Compatible with many laptop brands and motherboard designs that use 2-pin CMOS battery connectors, making it ideal for motherboard repair and BIOS power replacement.