Lenovo ThinkPad L15 Gen 4 (21H3/21H4) RTC Battery CMOS CR2016

Lenovo CMOS Battery CR2016 with Cable and 2-Pin Connector

This genuine Lenovo CMOS battery (RTC battery) powers the real-time clock and the motherboard’s BIOS/UEFI settings when the laptop is unplugged from the power source and the main battery is dead or removed. A depleted CMOS battery typically manifests as a reset time and date, lost BIOS settings, or CMOS checksum error messages during startup.

The coin cell comes pre-assembled with a cable, a 2-pin connector, and an adhesive pad. No soldering is required: simply plug the battery into the CMOS connector on the motherboard.

Technical Specifications

Cell type: CR2016 lithium coin cell

Nominal voltage: 3 volts

Cable length: 6.5 cm

Connection: Connection cable with 2-pin connector

Condition: Brand new, genuine Lenovo part