Rtc Battery - HP EliteBook 820 G4 Maintenance And Service Manual

RTC battery

Description
RTC battery
Before removing the RTC battery, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
4. Remove the bottom cover (see
5. Remove the battery (see
6. Remove the system board (see
Remove the RTC battery:
1. Remove the RTC battery cable from the system board (1).
2. Lift the battery up to disengage it from the system board (2).
Reverse this procedure to install the RTC battery.
Bottom cover on page
Battery on page 35).
System board on page
30).
61).
Component replacement procedures
Spare part number
702853-001
65