Fix Your Stuff

Repair Guides

Learn how to fix just about anything with our step-by-step guides.

App

Your pocket repair helper.

FixBot

The friendly AI repair assistant.

Repairability

Learn why fixable products make sense.

Teardowns

Get a sneak peek inside the latest gadgets.
Community

Answers Forum

Share solutions and get help from a friend.

Find Your Community

Find teams, events, and fellow fixers.

Help Out

Help make repair knowledge free and accessible for everyone.

Right to Repair

Learn about the Right to Repair movement and how to be an advocate.
Store

Featured

Quality parts and tools backed by our lifetime guarantee.

Tools

Shop our wide selection of precision tools.

Parts

Shop parts backed by our quality guarantee.

iPhone Batteries

Batteries tested and guaranteed plus a kit with everything you need.

Free Shipping on Domestic Orders $75+

Lenovo ThinkPad T400s CMOS Battery Replacement

Introduction

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

What you need

  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
    Ask FixBot

    Add Comment

  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
    Ask FixBot

    Add Comment

  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
    Ask FixBot

    Add Comment

  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
    Ask FixBot

    Add Comment

  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
    Ask FixBot

    Add Comment

  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
    Ask FixBot

    Add Comment

  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
    Ask FixBot

    Add Comment

Conclusion

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

Cancel: I did not complete this guide.

4 other people completed this guide.

Author

with 3 other contributors

Morgan Montalvo

Member since: 04/14/15

652 Reputation

3 Guides authored

Badges: 14

+11 more badges

Team

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

CPSU-MANESS-S15S6G18

4 Members

12 Guides authored

0 Guide Comments

Add Comment

View Statistics:

Past 24 Hours: 2

Past 7 Days: 20

Past 30 Days: 86

All Time: 22,761