RTC battery Lenovo CR2016 (model 01AY996) for motherboard clock and CMOS backup

Replacement RTC battery Lenovo CR2016 (model 01AY996) provides compact, long-term backup power for the real-time clock and CMOS memory on compatible Lenovo motherboards. The coin-cell CR2016 format delivers a steady voltage to preserve BIOS settings, system time and hardware configuration when the main power is disconnected, making it a standard maintenance part for laptops and desktops that use this battery type.

Advantages

The battery's compact coin-cell design ensures easy installation in standard motherboard holders. It provides consistent backup voltage to maintain BIOS parameters and system clock without drawing power from the main supply. Lenovo compatibility reduces the risk of mismatched size or voltage, and the low self-discharge chemistry helps retain capacity during storage or long periods of inactivity.

Suitable for

• Replacing depleted RTC/CMOS battery on compatible Lenovo motherboards
• Routine maintenance of laptops and small form-factor desktops
• Motherboard repair, BIOS setting preservation and system time retention

Key specifications

• Cell type: coin-cell lithium battery (CR2016 format)
• Nominal voltage: 3 V
• Compact diameter and thickness suitable for standard motherboard holders
• Designed for low self-discharge to preserve charge during storage
• Intended for CMOS/real-time clock backup on compatible motherboards

How to use

Power down the computer and disconnect it from mains supply. Open the device casing following the manufacturer's service instructions to access the motherboard. Locate the RTC/CMOS battery holder, note battery polarity, and carefully remove the depleted coin cell. Insert the new CR2016 battery with the correct polarity until it seats securely in the holder. Reassemble the device, reconnect power, and verify BIOS settings and system time; adjust if necessary.

Recommendations

Handle the battery with dry hands and avoid shorting the terminals. Replace with the same cell type and voltage to ensure proper CMOS backup. Dispose of used batteries according to local regulations for battery recycling.