Replacing the Date/Time Battery 
The date/time (backup) battery maintains the camera’s date and time. Its service life is approx. 5 years. If the date/time is reset when camera is turned on, follow the procedure below to replace the backup battery with a new CR1616 lithium battery.
The date/time/zone setting will also be reset, so be sure to set the correct date/time/zone (p.36).
1 Set the power switch to <2>.
2 Unscrewscrew. the battery holder
Use a small Phillips screwdriver. Be careful not to lose the screw.
3 Take off the battery holder. Push out the battery as shown by arrow 2.
4 Replaceholder. the battery in the battery
Make sure the new battery is in the proper + – orientation.
5 Tightenscrew. the battery holder’s
For the date/time battery, be sure to use a CR1616 lithium battery.
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