Source: steps rewritten in our own words (no more than 8 words in a row copied; part numbers, screw sizes and warnings kept as printed) from HP's Maintenance and Service Guide (PDF, printed pages 43). Not bench-tested. We have not performed this repair; keep HP's manual open for its illustrations. Scope restrictions below are part of the guide: do not apply it to other models, generations or configurations. Service manuals are written for trained technicians; work at your own risk.
Labels: DOCUMENTED = taken from HP's manual; PROPOSED = our own joining or ordering of HP's directions, not an HP instruction; UNPERFORMED = a suggested check that has not been carried out.
Applies to
HP EliteBook 840 G8. Confirm the exact model on the service label before starting.
HP EliteBook 840 G8 battery replacement. HP prints this procedure on printed page 43 of its maintenance and service guide.
Tools and parts
- Screwdrivers and a non-marking pry tool as HP lists for this procedure
- Static-safe work surface
L78555-005- Battery, 3 cell, 53 Whr. Source: printed page 43.
Preparation
Save your work, shut the computer down through the operating system, unplug AC power and every external device, and work on a grounded, static-safe surface.
Replacement
- Shut the computer down, unplug the power cord, and complete the preparation-for-disassembly steps first. (printed page 43).
- Release the battery cable from the system board and undo the fasteners that hold the battery in its bay. (printed page 43).
- Lift the battery straight out of the computer and set it aside so it is not punctured or crushed. (printed page 43).
Part numbers in our catalog
- HP L78555-005 Battery (L78555-005)
Check each part page for its source and variant notes before ordering.
Manufacturer manual
HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-elitebook-840-g8-battery-replacement-p43