Canon FAX-L800 manual About the Backup Battery

JBecause your user data and speed dialling settings are constantly refreshed by a lithium battery, they will not be lost as a result of a power failure, even if power to the fax is cut off for longer than approximately 12 hours.

JWhen many documents are stored in the fax memory, the fax may need about 2 minutes to recover after power is restored to the fax.

About the Backup Battery

Here is a list of things to keep in mind about the backup battery.

JThe backup battery that preserves document data in the memory for up to 12 hours in case of a power loss is a rechargeable battery, and it requires about 1 day to reach full charge after power to the fax unit is restored.

JFrequently disconnecting the fax unit from the power source shortens the service life of the battery.

JTo avoid shortening the backup battery service life, use the fax within a temperature range of 10!C to 32.5!C. If the fax is used in an environment that is too hot or too cold, this can shorten the service life of the backup battery.

JIf the backup battery can not preserve data even after you plug in the power source and the fax is left on for 1 day (24 hours), call for service and have the backup battery replaced.

Chapter 8 Using the Memory Features 8-25