Canon POWERSHOT A480 User Manual page 108

The life of the date/time battery (back-up battery)is approximately 7 years. If
the Date/Time settings screen appears every time the camera is turned on,
replace the date/time battery with a new one (CR1220).
....... Turn off the camera.
Openthecoverand removethe
AA batteries (p. 12).
Remove the date/time battery
holder.
Replace the battery.
Insert the battery with (+) and (-) sides
oriented correctly.
Inse tthedate/time battery holder.
Insert the batteries and close the
cover.
Turn on the camera's power and
set the date/time (p. 16).
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