Replacing The Dateltime Battery - Canon EOS Rebel XTi Instruction Manual

Replacing the Date/Time Battery
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The date/time (back-up) battery maintains the camera's date and time.
Its service life is about 5 years. If the battery is replaced and the date/
time dialog appears, replace the lithium CR2016 battery with a new
one.
The date/time setting will also be reset, so be sure to set the
correct date/time.
1
Set the power switch to
<OFF>.
Open the cover and remove the
battery.
Take off the battery holder.
Replace the battery.
~ Make sure the battery is in the proper
+ - orientation.
Insert the battery holder and
close the cover.
4)
For the date/time battery, be sure to use a CR2016 lithium battery.
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