Lenovo 5B10S34092 CMOS Battery with Cable – 3V CR2032 Lithium Coin Cell for IdeaPad, ThinkPad, Yoga

Keep your Lenovo laptop's BIOS settings and system clock intact with this genuine 3V CR2032 lithium coin cell backup battery. Engineered for long-term reliability, it delivers a stable 220 mAh capacity and comes pre-wired with a 2-pin connector and 80 mm cable for straightforward internal installation.

Overview

The Lenovo 5B10S34092 is a field-replaceable CMOS battery designed to preserve critical system configuration data when your laptop is powered off or unplugged. It uses lithium manganese dioxide chemistry, offering a shelf life of up to 10 years and dependable performance across a wide operating temperature range from -20°C to 70°C. Whether you're servicing an IdeaPad, ThinkPad, or Yoga series notebook, this battery ensures your system boots correctly without date/time resets or BIOS errors.

What stands out

• Authentic Lenovo FRU part (5B10S34092) for guaranteed compatibility
• Pre-attached 2-pin JST-style connector and 80 mm cable for easy plug-in replacement
• Long 10-year shelf life reduces the need for frequent replacements
• RoHS compliant and built with reliable lithium manganese dioxide chemistry

Technical details

• Battery type: Lithium coin cell (CR2032)
• Nominal voltage: 3V
• Nominal capacity: 220 mAh
• Chemistry: Lithium manganese dioxide (LiMnO2)
• Connector: 2-pin (JST-style)
• Cable length: approx. 80 mm
• Application: CMOS/BIOS memory backup
• Operating temperature: -20°C to 70°C
• Installation: Internal (requires opening laptop chassis)
• Package contents: 1x CMOS battery with cable
• RoHS compliant: Yes

Our verdict

A must-have spare for IT technicians and DIY repair enthusiasts. This genuine Lenovo CMOS battery restores reliable BIOS memory backup and eliminates frustrating boot errors, all in a compact, ready-to-install package.