RTC Battery Module Lenovo CR2016 — compatible real-time clock battery for ThinkPad/Lenovo systems, model 01AY997

Lenovo RTC Battery Module CR2016 is a direct replacement real-time clock backup battery designed for compatible ThinkPad and Lenovo systems. The module uses a CR2016 coin cell format to maintain BIOS settings and system clock when the main power is disconnected, enabling reliable timekeeping and configuration retention after power loss. Intended for repair, maintenance, or system refurbishment, this RTC battery module restores the motherboard's ability to preserve system time and BIOS parameters.

Advantages

The RTC battery module provides a compact, low-profile power source for the real-time clock circuit, ensuring continuous preservation of BIOS settings and system time without depending on the main battery. Its CR2016 coin cell design offers long shelf life and stable voltage suitable for RTC applications. The module is compatible with a range of relevant Lenovo/ThinkPad motherboards, making it convenient for targeted repairs and maintenance of legacy and modern systems that use this battery format.

Suitable for

• Restoring timekeeping and BIOS configuration on Lenovo/ThinkPad laptops
• Repair and maintenance of systems with depleted or failing RTC battery
• Motherboard refurbishment and component replacement tasks
• Service centers and technicians performing diagnostic and repair work

Key specifications

• Battery type: CR2016 coin cell format
• Function: Real-time clock (RTC) backup for BIOS and system clock retention
• Form factor: Module suited for on-board RTC battery connectors
• Voltage: Typical nominal voltage for CR2016 coin cells (3 V)
• Compatibility: Designed for compatible Lenovo/ThinkPad systems requiring a CR2016 RTC module

How to use

Power off the laptop and disconnect it from any power source before attempting replacement. Access the RTC battery module location according to the device service manual or manufacturer instructions, remove the existing depleted module carefully, and install the new CR2016 module in the correct orientation. Reassemble the device, reconnect power, and verify BIOS settings and system clock are retained. If necessary, enter BIOS setup to confirm time and configuration values and make adjustments after installation.

Recommendations

Store unused RTC modules in a cool, dry place and avoid exposure to extreme temperatures or humidity. When replacing the module, follow ESD-safe procedures and consult the device's service documentation for disassembly and reassembly steps. Dispose of depleted coin cells in accordance with local battery disposal regulations.