CMOS battery Lenovo CR2016 3V (model 01HY008) for motherboard RTC and BIOS settings

Lenovo CMOS battery CR2016 3V (model 01HY008) is a compact coin-cell replacement intended to supply a stable 3V voltage to a computer motherboard’s real-time clock (RTC) and to retain BIOS configuration when the main power source is removed. The battery is compatible with systems and devices that accept a CR2016 cell size and is primarily used to maintain system time, date and BIOS parameter storage to ensure consistent boot behaviour and retained user settings.

Advantages

This CMOS battery delivers a reliable 3V output with low self-discharge suitable for long-term standby use. Its compact CR2016 format simplifies installation in compatible battery holders on many motherboards. The battery is designed to help prevent loss of time, date and BIOS settings during power outages or when a system is disconnected from mains power, reducing the need for frequent manual reconfiguration.

Suitable for

• Replacing a depleted CMOS battery in Lenovo laptops and desktops that use CR2016 cells
• Maintaining RTC and BIOS settings in embedded systems and small-form-factor motherboards
• Service and repair tasks where stable timekeeping and retained BIOS parameters are required

Key specifications

• Cell type: coin cell (CR2016 physical size)
• Nominal voltage: 3V
• Intended function: RTC power and BIOS parameter retention
• Form factor: compact, flat coin design for motherboard battery holders
• Typical application environment: consumer and small-form-factor computing devices that accept CR2016

How to use

Power down the device and disconnect it from any external power source. Open the chassis or access panel to reach the motherboard battery holder. Note the battery orientation and carefully remove the old battery using an appropriate non-conductive tool if needed. Insert the new CR2016 cell with the correct polarity, ensuring it sits securely in the holder. Reassemble the device, reconnect power and check system time and BIOS settings; adjust as necessary.

Usage recommendations

Replace the battery when system clock drift or BIOS setting loss is observed. Dispose of the old cell according to local battery recycling regulations. Avoid short-circuiting the cell, exposing it to high temperatures, or attempting to recharge a non-rechargeable coin cell.