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Lenovo ThinkPad T400s CMOS Battery Replacement

Lenovo ThinkPad T400s CMOS Battery Replacement

Morgan Montalvo

Morgan Montalvo and 3 other contributors

Last updated on August 31, 2015

20 minutes
Easy

Introduction

Go to step 1

This guide will show you how to replace your CMOS battery.

What you need

Tools

Show more…

  1. Lenovo ThinkPad T400s CMOS Battery Replacement, Keyboard: step 1, image 1 of 2 Lenovo ThinkPad T400s CMOS Battery Replacement, Keyboard: step 1, image 2 of 2

    • Remove the Phillips #0-6mm screw.

    • Lift up the back cover to the RAM cards.

    Edit

  2. Lenovo ThinkPad T400s CMOS Battery Replacement: step 2, image 1 of 2 Lenovo ThinkPad T400s CMOS Battery Replacement: step 2, image 2 of 2

    • Pull the lock for the baterry to the left to unlock.

    • While holding the tab in the unlocked position, remove the battery.

    Edit

  3. Lenovo ThinkPad T400s CMOS Battery Replacement: step 3, image 1 of 1

    • Remove the three Phillips #0-6mm screws on the back panel.

    • These screws are marked with a keyboard symbol next to them.

    Edit

  5. Lenovo ThinkPad T400s CMOS Battery Replacement: step 4, image 1 of 3 Lenovo ThinkPad T400s CMOS Battery Replacement: step 4, image 2 of 3 Lenovo ThinkPad T400s CMOS Battery Replacement: step 4, image 3 of 3

    • Turn the computer over and open the lid.

    • Wedge the small metal spudger between the palm rest and the keyboard.

    Edit

  6. Lenovo ThinkPad T400s CMOS Battery Replacement: step 5, image 1 of 3 Lenovo ThinkPad T400s CMOS Battery Replacement: step 5, image 2 of 3 Lenovo ThinkPad T400s CMOS Battery Replacement: step 5, image 3 of 3

    • Lift up the keyboard, but be careful not to completely remove.

    • Don't lift the keyboard too quickly, there is a connector cable you must disconnect first.

    • Wedge the small plastic opening tool underneath copper band and tilt back.

    • Remove keyboard to replace.

    Edit

  7. Lenovo ThinkPad T400s CMOS Battery Replacement, CMOS Battery: step 6, image 1 of 1

    • Gently pull the back-up battery from underneath the front panel.

    Edit

  8. Lenovo ThinkPad T400s CMOS Battery Replacement: step 7, image 1 of 2 Lenovo ThinkPad T400s CMOS Battery Replacement: step 7, image 2 of 2

    • Pull on the black connection piece and remove the back-up battery.

    Edit
Conclusion

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

4 other people completed this guide.

Author

with 3 other contributors

Morgan Montalvo

Member since: 04/14/15

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3 Guides authored

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Team

Cal Poly, Team 6-18, Maness Spring 2015 Member of Cal Poly, Team 6-18, Maness Spring 2015

CPSU-MANESS-S15S6G18

4 Members

5 Guides authored

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