HP EliteBook 840 G7 battery replacement

Step-by-step HP EliteBook 840 G7 battery replacement paraphrased from HP's official Maintenance and Service Guide, with page citations.

Source: paraphrased from HP's official Maintenance and Service Guide (PDF, printed pages 28–34, 43–45). 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 G7. Confirm the exact model on the service label before starting.

HP places this procedure in the authorized-service-provider chapter. Preserve that classification. HP warns against puncturing, twisting, compressing or shorting the pack; follow its handling instructions.

Tools and preparation

Phillips driver appropriate to the fasteners, nonmarking/nonconductive opening tool, static-safe work surface, and screw organizer. Advanced keyboard work requires all tools specified in the complete OEM manual.

Confirm the exact model is HP EliteBook 840 G7. Save work and shut down through the operating system, unplug AC and remove external devices. Work on a grounded static-safe surface. Loosen the five captive Phillips bottom-cover screws. Starting near the hinges, release the cover edges with a nonmarking, nonconductive tool and remove the cover (printed pp. 33–34). Lift the tape at the battery connector and disconnect the battery cable from the system board (printed p. 44). Keep screws organized and handle circuit boards by their edges.

OEM spare options

Verify exact configuration before ordering. Table options do not establish blanket aftermarket upgrade compatibility.

  • L78555-005 — 3-cell, 53 Whr battery; printed p. 43.

Procedure

  1. Complete preparation, including lifting the battery-connector tape and disconnecting the battery cable.
  2. Release the speaker cable from the clips along the bottom of the battery.
  3. Remove the four Phillips M2.0×4.0 screws securing the battery and lift it out.
  4. Position the replacement, reinstall the four screws, route the speaker cable back into its clips, reconnect the battery cable and restore the connector tape. Refit the cover and secure its five captive screws before reconnecting AC.

After assembly

Suggested check, not performed: verify the replaced component is detected and functions. For an SSD, restore/migrate the OS and data using a separately prepared recovery plan; hardware replacement does not transfer data.

Part numbers in our catalog

Check each part page for its source and variant notes before ordering.

Official manual

HP Maintenance and Service Guide (PDF, HP). Machine-readable copy: /api/guides/hp-elitebook-840-g7-battery-replacement