Replacing The Date/Time Battery - Canon EOS 20D Instruction Manual

Replacing the Date/Time Battery
The date/time (back-up) battery maintains the camera's date and time.
The battery's service life is about 5 years. If the date/time is reset when
the battery is replaced, replace the back-up battery with a new CR2016
lithium battery as described below.
The date/time setting will also be reset, so you must set the
correct date/time.
_ Turn the <_> switch to <OFF>.
'_'_jj,,, Open the cover and remove the
battery.
Take out the battery holder.
(-) (+) _s_, Replace the battery in the battery
holder.
_ Make sure the battery is in the proper
+ - orientation.
51 Close the cover.
O FOithe date/time battery,be Sure to Usea CP_0t 6 lithium battery.
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