Replacement RTC coin cell battery Lenovo 01LW332 3V 220mAh for motherboard real-time clock

Replacement RTC coin cell battery Lenovo 01LW332 provides a stable 3V power source with 220mAh capacity to maintain the motherboard real-time clock and preserve BIOS settings when the main power is disconnected. Designed as a direct replacement for compatible Lenovo systems, this coin cell battery supports continuous timekeeping and configuration retention, helping to ensure correct system startup and accurate timestamps for hardware and software events.

Advantages

This RTC coin cell battery offers consistent voltage output and sufficient capacity to keep the real-time clock running for extended periods without external power. Its form factor is compatible with standard motherboard coin cell holders used in Lenovo systems, enabling straightforward replacement. The battery's stable chemistry minimizes self-discharge, which helps maintain BIOS settings and schedule-dependent functions. Installation and replacement can be performed without specialized equipment in most service scenarios.

Suitable for

• Restoring or replacing a depleted RTC battery on Lenovo-compatible motherboards
• Service and repair of laptops and desktops that require CMOS/BIOS power backup
• Maintenance tasks where accurate system time and retained BIOS configuration are necessary

Key specifications

• Nominal voltage: 3V
• Capacity: 220mAh
• Cell type: coin cell for motherboard RTC/CMOS backup
• Chemistry: long-life coin cell chemistry suitable for low-drain RTC use
• Typical operating temperature range suitable for consumer PC environments

How to use

Power down the computer and disconnect it from mains power. Open the case or access panel to reach the motherboard and locate the existing coin cell holder. Carefully remove the depleted battery, observing its orientation and any retaining clip. Insert the replacement RTC coin cell with the correct polarity, ensuring a secure fit in the holder. Reassemble the system, reconnect power, and verify system time and BIOS settings; adjust date/time and BIOS configuration if required.

Recommendations

Store spare batteries in a cool, dry place and avoid exposure to high temperatures or direct sunlight. When replacing the RTC battery, note any BIOS password or configuration saved only in volatile memory and back up or record important settings before removal. Dispose of the old battery according to local battery recycling regulations.