Knowledge Base

At What Voltage Would the CMOS Battery Lose System Settings?

Cause - Possible power outage or just usage over time

The CMOS battery will still perform its function successfully down to 2.6V. The cut-off electrical signal level for TTL/CMOS logic is 2.6V, defining the state as a 1, or HIGH state. Anything below that is a 0, or LOW state.