Lenovo Battery RTC CR2032 w/ cable

Lenovo 5B10S34066 is a lithium coin-cell battery for CMOS backup in compatible Lenovo systems. It supplies the motherboard when main power is disconnected, helping retain BIOS/CMOS settings and the real-time clock.

The specified 3 V nominal voltage and 220 mAh capacity suit the low-power backup role for settings and clock retention. Use it as a replacement only in a Lenovo system that calls for this exact part number.