Canon 1Ds Instruction Manual - Page 149
Replacing the Back-up Battery
UPC - 013803021820
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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. 1 Set the < > switch to < > and remove the battery pack. • The back-up battery is on the ceiling of the battery pack compartment. 2 •Remove the back-up battery cover. Loosen the screw as shown in the illustration. 3 Remove the back-up battery. (+) 4 •Install a new back-up battery. The plus side of the battery must face up. 5 •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 9 on page 148 to set the correct date and time. Maintenance For the back-up battery, be sure to use only a CR2025 lithium battery. 149