Canon EOS-1D Instruction Manual
149
Maintenance
9
Replacing the Back-up Battery
The back-up battery maintains the camera’s date and time. The battery’s service life is about
10 years. If the date/time is reset upon battery pack replacement, replace the back-up battery
with a new CR2025 lithium battery as described below.
10 years. If the date/time is reset upon battery pack replacement, replace the back-up battery
with a new CR2025 lithium battery as described below.
Set the <
> switch to <
> and
remove the battery pack.
•
The back-up battery is on the ceiling of the battery
pack compartment.
pack compartment.
1
Remove the back-up battery cover.
•
Loosen the screw as shown in the illustration.
2
Remove the back-up battery.
3
Install a new back-up battery.
•
The plus side of the battery must face up.
4
Reattach the battery cover.
•
After you install the battery and set the <
> switch
to <
>, the LCD monitor will display the menu for
setting the date and time. Follow the steps
2
to
4
on page 148 to set the correct date and time.
5
For the back-up battery, be sure to use only a CR2025 lithium battery.
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