RTC battery
Table 5-5 RTC battery description and part number
Description Spare part number
RTC battery 857380-001
Before removing the RTC battery, follow these steps:
1. Prepare the computer for disassembly (Preparation for disassembly on page 23).
2. Remove the bottom cover (see Bottom cover on page 24).
3. Disconnect the battery cable from the system board (see Battery on page 25).
To remove the RTC battery:
▲ Disconnect the RTC battery cable from the system board (1), and then lift the RTC battery from the
computer (2).
NOTE: The RTC battery is secured with double-sided tape.
Reverse this procedure to install the RTC battery.
Component replacement procedures 29