Davicom’s Cortex units use a Lithium battery to power their Real Time Clock (RTC) circuit. The recommended battery is the BR2032 which has a wider temperature range than the regular CR2032 batteries. However, a CR2032 can be used if a BR2032 type is not available.
Battery life is normally good for up to 10 years, but we recommend replacement after 5 to 8 years. Note that the battery only powers the Real-Time-Clock (RTC) circuit in the Cortex, all other settings, configurations and workspaces are stored in Non-Volatile Memory.
The following procedure should be followed to change the battery.
BR2032 battery install/replacement procedure for Cortex units
- Power off the Cortex unit and remove from equipment rack if necessary.
- Remove top cover.
- Gently slide the new (or replacement) battery in the battery holder. Observe the proper polarity.
- Apply power and let the Cortex boot-up (about one minute or until Activity LED starts blinking). Wait another minute to allow the RTC circuit to start-up normally.
- At this point, if desired, you can manually set the time and date in the Cortex, or perform a time synchronization if connected to an NTP server.
- If you are returning the unit to storage, you can remove power and re-install the top cover after the ~2 minute wait.
- If the unit is to be used immediately, simply re-install the top cover and re-mount the unit in its rack.
The procedure requires that the unit be powered-up as soon as possible after installing the battery, thus allowing the RTC to configure itself properly in low-power mode. The unit can then be powered down, otherwise the battery will drain if it is initially installed in an unpowered unit.