During A Power Failure; Memory Backup Function - Canon CFX-L4000 User Manual

USING MEMORY
5-20
If theiPower,··GoesOut.••.
The fax includes a built-in lithium battery and a backup battery for
use in case power to the fax is cut off.
The lithium battery has a life of about five years and will save the
fax's registered data for One-Touch Speed Dialing, Coded Speed
Dialing, Group Dialing, etc.
However, the backup battery will only save the documents stored in
memory for approximately one hour. If the power failure lasts longer
than an hour, the stored documents will be lost (in this case, the fax
automatically prints a list of the lost documents when power is
restored).
During a Power Failure
While power is out, you can only use the fax to receive telephone
calls. You cannot make calls, nor send or receive faxes.
Memory Backup Function
To make the best use of the fax's memory backup, avoid turning the
fax off unless absolutely necessary. The backup battery recharges
while the fax is powered on, and takes 15 minutes to recharge fully.
Canon CFX-L4000 User·s Guide