HP ProBook 440 Notebook PC and HP ProBook 445 G2 Notebook PC - Maintenance and Service Guide

RTC battery, HP 445 models
Description Spare part number
RTC battery 759981-001
Before removing the RTC battery, follow these steps:
1. Shut down 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 all external devices connected to the computer.
3. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
4. Remove the battery (see Battery on page 36).
5. Remove the following components:
a. Service doors (see Service door on page 37).
b. Hard drive (see Hard drive on page 39)
c. Optical drive (see Optical drive on page 43)
d. Keyboard (see Keyboard on page 49)
e. Top cover (see Top cover on page 53)
Remove the RTC battery:
1. Using a at tool, pry the battery out of the socket (1).
2. Remove the battery from the socket (2).
Reverse this procedure to install the RTC battery.
56 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts