Battery Lenovo CR2016 FRU01AY997 3V coin cell for portable devices

Lenovo CR2016 FRU01AY997 is a 3V coin cell battery designed for small portable electronic devices that require reliable real-time clock backup and memory retention. The compact CR2016 form factor makes it suitable for tight spaces on motherboards, watches, calculators and similar equipment. The battery provides a stable nominal voltage and simple installation for routine replacement and maintenance.

Advantages

This coin cell delivers a consistent 3V output optimized for low-drain applications such as RTC modules and CMOS memory. Its standardized CR2016 dimensions allow straightforward replacement in devices designed for this size, while chemical stability and a sealed metal canister reduce leakage risk and help preserve contacts. The compact design supports long shelf life and easy storage for service technicians and end users.

Suitable for

• Motherboard CMOS/RTC backup
• Wristwatches and small timekeeping devices
• Calculators and small electronic instruments
• Remote controls and key fobs with low current draw
• Embedded systems requiring long-term standby power

Key specifications

• Nominal voltage: 3V
• Cell type: coin/button cell (CR2016 form factor)
• Chemistry: lithium manganese dioxide (typical for CR series)
• Physical size: CR2016 standard dimensions (20 mm diameter, 1.6 mm thickness)
• Intended use: low-drain backup power for RTC and memory retention

How to use

Switch off the device and, if possible, disconnect external power before replacing the battery. Open the battery compartment or access the motherboard holder using appropriate tools to avoid contact damage. Observe polarity when inserting the coin cell: the positive side typically faces up toward the exterior of the holder. Secure the holder back in place and restore main power. After replacement, verify that the real-time clock and retained settings are correct and adjust if necessary.

Recommendations

Store unused batteries in a cool, dry place away from direct sunlight and metal objects. Do not attempt to recharge, short-circuit, disassemble or expose the battery to fire. Dispose of used batteries according to local regulations for battery recycling or hazardous waste.