CMOS Battery Lenovo CR2016 3V for 5B10W13978 compatible laptops

Lenovo CR2016 3V CMOS battery is a coin-cell lithium replacement designed to maintain BIOS settings, system time and basic motherboard functions when a laptop is powered off or its main battery is removed. This compact battery matches the physical size and voltage required by compatible Lenovo laptops and motherboards, making it a suitable service part for restoring CMOS backup power quickly and reliably.

Advantages

The battery provides stable 3V output in a compact CR2016 form factor with low self-discharge for long shelf life and extended standby retention. Its coin-cell design allows straightforward, tool-light replacement in devices that accept CR2016 format cells. The chemistry and construction are chosen to deliver consistent backup voltage for CMOS circuits and a predictable service life under normal storage and use conditions.

Suitable for

• Restoring BIOS settings and system clock on compatible Lenovo laptops
• Replacing depleted motherboard CMOS batteries during repairs or maintenance
• Use in small electronics and embedded systems that require a CR2016 3V cell

Key specifications

• Cell type: lithium coin cell (CR2016 form factor)
• Nominal voltage: 3 volts
• Typical use: CMOS/RTC backup power
• Physical dimensions: standard 20 mm diameter, 1.6 mm thickness
• Storage life: long shelf life with low self-discharge typical of lithium coin cells

How to use

Power down the laptop and disconnect mains and main battery before replacing the CMOS battery. Access the battery location according to the device service manual or manufacturer guidance, carefully remove the old coin cell and install the CR2016 ensuring correct polarity orientation. Reassemble the device and power it on to confirm BIOS settings and system time are retained; if necessary, enter BIOS setup to restore any custom settings.

Recommendations

Store unused batteries in a cool, dry place away from direct sunlight and high temperatures. 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.