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Introduction

The HP Probook 640 G4 is a business class 14-inch laptop that is designed for durability. This guide will walk you through how to safely replace the battery. A failing battery can cause short run time or failure to charge.

Before you start, be sure to power the laptop off completely, unplug the AC adapter, and remove all external devices. Work on a clean flat surface. Make sure you have all of the right tools and parts available.

If the battery appears to be swollen make sure to not press on it or try to discharge it. Handle it gently and be sure to keep it cool. Avoid puncturing the battery and never use metal tools to pry it out.

If your laptop only powers on while plugged in, shuts off at high percentages, or your laptop reports a poor battery health then a replacement battery is often the fix.

What you need

Step 1 Lower Case

HP ProBook 640 G4 Battery Replacement, Lower Case: step 1, image 1 of 2

HP ProBook 640 G4 Battery Replacement, Lower Case: step 1, image 2 of 2

Loosen the eight 2.5 mm-long Phillips captive screws securing the lower case.
Captive screws cannot be fully removed.

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Step 2

Insert an opening pick into the seam between the lower case and chassis, and twist it to create a gap.
Insert an opening tool into the gap.
Use the opening tool to pry around the entire perimeter of the device until the lower case fully releases.
Remove the lower case.

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Step 3 Battery

HP ProBook 640 G4 Battery Replacement, Battery: step 3, image 1 of 3

HP ProBook 640 G4 Battery Replacement, Battery: step 3, image 2 of 3

HP ProBook 640 G4 Battery Replacement, Battery: step 3, image 3 of 3

Use a Phillips screwdriver to loosen the six 2.5 mm-long captive screws securing the battery.
Captive screws are not fully removable—they only loosen.
Slide and lift the battery out.

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Conclusion

To reassemble your device, follow the above steps in reverse order.
For optimal performance, after completing this guide, calibrate your newly installed battery.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Try some basic troubleshooting or ask our Answers community for help.