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Introduction

If your battery has lost the ability to hold a charge, it will need to be replaced. This tutorial will guide you through replacing the battery of a Dell Latitude 7420 .

Before starting, please ensure the device is turned off and disconnected from any adaptors or charging cables.

Likewise, use an anti-static band or mat when opening computers or handling components.

If the battery is swollen, be sure to take precautions.

What you need

Step 1 Back Case

Dell Latitude 7420 Battery Replacement, Back Case: step 1, image 1 of 3

Dell Latitude 7420 Battery Replacement, Back Case: step 1, image 2 of 3

Dell Latitude 7420 Battery Replacement, Back Case: step 1, image 3 of 3

Remove the eight, 7 mm screws from the back case using a Phillips #0 screwdriver.
Use an opening pick or opening tool and work your way around the periphery of the base cover to separate it from the chassis.

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Step 2 Battery

Dell Latitude 7420 Battery Replacement, Battery: step 2, image 1 of 2

Dell Latitude 7420 Battery Replacement, Battery: step 2, image 2 of 2

Be sure to use an anti-static band or mat from this point onward.
Using the Phillips #1 screwdriver, remove the five 5 mm screws securing the battery to the motherboard.

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Step 3

Use a spudger to pry up each side of the battery connector. Then, lift the connector straight up from its socket.
To reinstall, carefully position the connector, and then press it straight down until it snaps into its socket. Finger pressure is all that is required. If it won't snap home it'll be because it isn't correctly positioned. Sometimes it can take a little patience to find exactly the right position.