Lenovo Legion Slim 7 2021 Battery Replacement

Introducción

You may need a new battery if your laptop does not last long without a power adapter. This guide will tell you how to replace the battery.

If your battery appears to be swollen, take appropriate precautions.

Before you start, power off the device and disconnect the power adapter.

Qué necesitas

Paso 1 Remove back cover screws

Lenovo Legion Slim 7 2021 Battery Replacement, Remove back cover screws: paso 1, imagen 1 de 1

Flip the laptop.
Remove the 8 screws on the back cover and keep them safe.

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Paso 2 Pry the back side of the cover

Lenovo Legion Slim 7 2021 Battery Replacement, Pry the back side of the cover: paso 2, imagen 1 de 3

Lenovo Legion Slim 7 2021 Battery Replacement, Pry the back side of the cover: paso 2, imagen 2 de 3

Lenovo Legion Slim 7 2021 Battery Replacement, Pry the back side of the cover: paso 2, imagen 3 de 3

Insert an opening pick into back-right corner of the back cover.
Slide the opening pick slowly along the rear side to release the plastic clips.
Avoid inserting the opening pick too deep (>5mm), and do not add a lot of force.
If an opening pick is not present, you could use a plastic card. It should also work.

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Paso 3 Open the back cover

Lenovo Legion Slim 7 2021 Battery Replacement, Open the back cover: paso 3, imagen 1 de 3

Lenovo Legion Slim 7 2021 Battery Replacement, Open the back cover: paso 3, imagen 2 de 3

Lenovo Legion Slim 7 2021 Battery Replacement, Open the back cover: paso 3, imagen 3 de 3

Use your finger to lift the rear side of the back cover up.
Add force backwards and upwards until the back cover is open.
Do not add a lot of force. If it is hard to open, try adjusting the direction of the force.

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Paso 4 Disconnect battery

Lenovo Legion Slim 7 2021 Battery Replacement, Disconnect battery: paso 4, imagen 1 de 2

Lenovo Legion Slim 7 2021 Battery Replacement, Disconnect battery: paso 4, imagen 2 de 2

Pry the battery cable out by a little bit to disconnect the battery from the board.
Avoid using sharp or metallic spudgers, as they may slip and damage the device.

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Paso 5 Remove battery

Lenovo Legion Slim 7 2021 Battery Replacement, Remove battery: paso 5, imagen 1 de 3

Lenovo Legion Slim 7 2021 Battery Replacement, Remove battery: paso 5, imagen 2 de 3

Lenovo Legion Slim 7 2021 Battery Replacement, Remove battery: paso 5, imagen 3 de 3

Remove the 4 screws on the battery.
Lift the inner side of the battery up, and pull it inwards slightly.
Take the battery cable out completely and remove the battery.

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Paso 6 Install new battery

Lenovo Legion Slim 7 2021 Battery Replacement, Install new battery: paso 6, imagen 1 de 3

Lenovo Legion Slim 7 2021 Battery Replacement, Install new battery: paso 6, imagen 2 de 3

Lenovo Legion Slim 7 2021 Battery Replacement, Install new battery: paso 6, imagen 3 de 3

Align the new battery and its cable into place.
Push the battery cable into the socket firmly. You will notice the charge indicator LED flash red when it is connected.
Add the 4 screws back.

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Paso 7 Align back cover

Lenovo Legion Slim 7 2021 Battery Replacement, Align back cover: paso 7, imagen 1 de 3

Lenovo Legion Slim 7 2021 Battery Replacement, Align back cover: paso 7, imagen 2 de 3

Lenovo Legion Slim 7 2021 Battery Replacement, Align back cover: paso 7, imagen 3 de 3

Carefully align the front side of the back cover into place.
Press the back cover down. Then push the marked areas to get the plastic clips back into place.
Turn the laptop over to make sure the trackpad aligns well. If it pops out as if the new battery got swollen again, try taking off the back cover and reinstall it.

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Paso 8 Sealing the device

Lenovo Legion Slim 7 2021 Battery Replacement, Sealing the device: paso 8, imagen 1 de 2

Lenovo Legion Slim 7 2021 Battery Replacement, Sealing the device: paso 8, imagen 2 de 2

Before sealing your device, it's suggested that you power up the device to make sure the new battery is working. Then turn it off before continuing.
Turn over the laptop and add the 8 screws back onto the back cover.

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Conclusión

Done! Now power up your device and enjoy your newly installed battery.

For optimal performance, calibrate your battery. To do that, charge the battery to 100% and leave it charging for at least 2 hours. Then discharge it until the device shuts down (avoid making it hot). Finally, charge it to 100% without interruption.