RTC battery
Description Spare part number
RTC battery (includes cable and double-sided adhesive) 818125-001
Before removing the RTC battery, follow these steps:
1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the bottom cover (see Bottom cover on page 28).
5. Disconnect the battery cable from the system board (see Battery on page 30).
Remove the RTC battery:
1. Disconnect the RTC battery cable (1) from the system board.
2. Detach the RTC battery (2) from the keyboard/top cover. (The RTC battery is attached to the keyboard/
top cover with double-sided adhesive.)
3. Remove the RTC battery.
Reverse this procedure to install the RTC battery.
Component replacement procedures 37
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