If you use the CV31 in a cold environment for an extended period of time, the backup battery temperature may fall below the required temperature for charging (0 °C, 104 °F). To prevent data loss, the default state of the CV31 is to not start if the backup battery does not have sufficient charge. If you need to start a CV31 that has a low battery but is connected to external power in a cold environment, you can enable this setting.
If the CV31 is disconnected from external power and the backup battery does not have sufficient charge, data may be lost or corrupted.
Disabled
Device Settings > Boot Charging Options > Disable charging during startup