RTC Backup Battery Lenovo 01AW186 3.0V 2200mAh, CMOS/BIOS realtime clock cell

RTC backup battery Lenovo 01AW186 is a 3.0V 2200mAh rechargeable cell engineered to sustain a computer or embedded device realtime clock and to preserve BIOS/CMOS settings during power interruptions. The cell’s compact cylindrical form and low self-discharge chemistry make it suitable for long-term standby duty in systems that require continuous clock operation and retention of configuration data when main power is removed.

Advantages

The battery provides reliable voltage for RTC circuits and CMOS memory, offering extended backup time thanks to its 2200mAh capacity. Its rechargeable construction reduces the need for frequent replacements in serviceable devices. Small size and standardized electrical characteristics simplify installation into compatible Lenovo and other systems that accept the same cell format. Low self-discharge properties help maintain charge over long storage periods, ensuring the realtime clock remains accurate after prolonged downtime.

Suitable for

• Maintaining system clock and BIOS/CMOS settings in Lenovo desktop and embedded systems
• Replacement in motherboards and industrial controllers that use a 3.0V RTC cell
• Service and maintenance of devices where long-term standby battery is required

Key specifications

• Nominal voltage: 3.0 V
• Capacity: 2200 mAh (rechargeable)
• Chemistry: rechargeable cell optimized for low self-discharge
• Physical format: compact cylindrical RTC backup cell suitable for CMOS/BIOS modules
• Intended use: realtime clock and CMOS memory backup in computers and embedded devices

How to use

Before installation, power down the device and disconnect it from mains power. Access the motherboard or RTC module according to the device service manual and remove the depleted cell, taking electrostatic discharge precautions. Install the replacement cell in the correct polarity orientation and secure it in the holder or compartment. Reconnect power and verify realtime clock operation and BIOS/CMOS settings in system setup. If applicable, charge the cell following device-specific charging procedures or allow the device to charge the cell according to its built-in charging circuit.

Usage recommendations

Store the battery in a cool, dry place away from direct sunlight and heat sources. Replace the cell if it shows signs of leakage, swelling, or if clock/BIOS settings are not retained. Use only compatible battery types specified by the device manufacturer and follow safety and disposal guidelines for rechargeable cells.