Ensure accurate system time, BIOS settings, and hardware configuration with the Lenovo Laptop CMOS Battery 04X0443. This small but essential component powers the motherboard’s real-time clock and stores BIOS settings when the laptop is powered off. A failing CMOS battery can lead to incorrect date/time, boot errors, or repeated BIOS resets.

Built with reliable lithium-cell technology, the 04X0443 CMOS battery is designed for long service life and stable voltage output. Its durable construction ensures consistent performance, helping maintain system settings even during extended shutdown periods.

Installation / Replacement Instructions

1. Power off the laptop and disconnect the AC adapter.
2. Remove the bottom cover following Lenovo service guidelines.
3. Locate the CMOS battery on the motherboard.
4. Carefully disconnect and remove the old battery.
5. Install the new 04X0443 CMOS battery in the correct orientation.
6. Reassemble the laptop and enter BIOS to reset date and time if required.

Compatible with select Lenovo laptop models, this OEM-quality CMOS battery ensures reliable system memory retention and stable BIOS operation.

Key Features

• Maintains BIOS settings and system clock accuracy
• Reliable lithium-cell power for long-lasting performance
• Prevents system time loss and boot configuration resets
• Compact design for direct motherboard installation
• Compatible with select Lenovo laptop models
• OEM-quality component for dependable system stability