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Introduction

In this guide, you will learn the steps on how to replace the battery on a Dell Latitude 7400. Over time, batteries lose their charge causing it to have a shorter battery life or worse, shutdown. Replacing this battery can restore the performance of your computer and provide a longer battery life. Before beginning, be sure to power off your device and disconnect from any external power source.

What you need

Step 1 Battery

Dell Latitude 7400 Battery Replacement, Battery: step 1, image 1 of 3

Dell Latitude 7400 Battery Replacement, Battery: step 1, image 2 of 3

Dell Latitude 7400 Battery Replacement, Battery: step 1, image 3 of 3

Lay the laptop on a flat hard surface facing downward.
Use a Phillips #0 screwdriver to remove the eight 3 mm screws that secure the lower case.
Lift the lower case off and set that aside.

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Step 2

Dell Latitude 7400 Battery Replacement: step 2, image 3 of 3

Use a Phillips #0 screwdriver to loosen the two 3 mm captive screws that secure the battery.
The screws will not remove completely, so just loosen them enough to lift battery.
Gently grip the battery connector loop and lift it to disconnect the battery connector.
Lift the battery up and 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.