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Introduction

If your Lenovo ThinkPad X1 Carbon 4th Gen (20FB002LUS) is not holding a charge or not charging at all, the battery may need to be replaced. Follow this guide to replace the main lithium-ion battery in your laptop.

The main lithium-ion battery in your laptop is responsible for powering your device when it is not plugged in. Over time, the battery may degrade and drain faster during use—this problem can be solved by replacing the battery.

This guide covers how to replace the primary battery on your laptop. If your device is not powering on at all, it’s recommended that you check the smaller coin cell battery first, since replacing the small coin cell is done more easily and costs less than the larger lithium-ion battery. A guide for replacing the coin cell battery can be found here.

Before starting this guide, make sure to power down the device fully and unplug any exterior sources of power from the laptop.

  1. Unscrew the nine captive screws on the bottom cover of the laptop using a Phillips #1 screwdriver. The screws do not fully come out of the back cover, so there is no need for screw management.
    • Unscrew the nine captive screws on the bottom cover of the laptop using a Phillips #1 screwdriver.

    • The screws do not fully come out of the back cover, so there is no need for screw management.

  2. Lift the back cover up and off of the computer.
    • Lift the back cover up and off of the computer.

  3. Carefully unplug the speaker connector by pulling it towards you. Carefully unplug the speaker connector by pulling it towards you. Carefully unplug the speaker connector by pulling it towards you.
    • Carefully unplug the speaker connector by pulling it towards you.

  4. Remove the two 5 mm screws on each speaker with a Phillips #1 screwdriver. Remove the two 5 mm screws on each speaker with a Phillips #1 screwdriver.
    • Remove the two 5 mm screws on each speaker with a Phillips #1 screwdriver.

  5. Unweave the blue and white wires from underneath the plastic tabs connected to the battery. Unweave the blue and white wires from underneath the plastic tabs connected to the battery.
    • Unweave the blue and white wires from underneath the plastic tabs connected to the battery.

  6. Lift each speaker up and out from the computer.
    • Lift each speaker up and out from the computer.

  7. Carefully lift the far end of the battery connector with an opening tool facing towards you. Remove the connector by pushing it forward and lifting. Remove the connector by pushing it forward and lifting.
    • Carefully lift the far end of the battery connector with an opening tool facing towards you.

    • Remove the connector by pushing it forward and lifting.

  8. Remove the central 5 mm screw with a Phillips #1 screwdriver. Remove the central 5 mm screw with a Phillips #1 screwdriver.
    • Remove the central 5 mm screw with a Phillips #1 screwdriver.

  9. Lift the battery up and out of the computer.
    • Lift the battery up and out of the computer.

Conclusion

To reassemble your device, follow these instructions in reverse order.

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Alexander Davis

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One Comment

Use a Phillips #0 not a #1 or P0 driver. It makes life a lot easier. ??

Jim Barbieri - Reply

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