Canon PowerShot A550 User Manual page 139

Replacing the Date Battery
If the LCD monitor displays the Date/Time menu when you turn on
the camera, this means that the date battery has run down and the
clock has stopped running. Please purchase a replacement battery
(lithium coin battery CR1220) and install it as follows.
The date battery is preinstalled at the factory and may therefore
expire earlier than its rated lifespan after the camera has been
purchased.
Remove the battery by
pulling it up in the
direction indicated by
the arrow.
»
"C
"C
(I)
::s
Co
;:.
101