DIY Series 47: Laptop CMOS Battery (CR2032)

CMOS batteries can last from 3-10 years. However, just like any other consumable item, they need to be replaced at some point.

Symptoms:

• CMOS checksum is invalid
• CMOS Reset (502)

Findings:

• CMOS Battery need to be replaced

Photos:

• Error Message during Power ON
• Condition of old CMOS Battery

 

Tools required:

• Screwdriver

Costs involved:

• CMOS Battery (CR2032) = US$0.10 ~ US$0.30