Canon PowerShot S80 User Guide Advanced User Manual page 11

If Condensation Forms Inside the Camera
Stop using the camera immediately if you detect condensation. Continued
use may damage the equipment.
Remove the memory card and batteries or compact power adapter from
the camera and wait until the moisture evaporates completely before
resuming use.
Extended Storage
When not using the camera for extended periods of time, remove the
batteries from the camera or battery charger and store the equipment in a
safe place.
The date/time settings may be lost after approximately three weeks if you
remove the main battery.
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