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If your device isn’t charging or loses charge quickly, it may be time to replace the battery. Follow the instructions below to replace the battery in the Lenovo Yoga C940-IIL laptop.

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  1. Lenovo Yoga C940-IIL  Battery Replacement, Battery: step 1, image 1 of 1
    • Flip over the laptop so that the underside is facing you.

  2. Lenovo Yoga C940-IIL  Battery Replacement: step 2, image 1 of 3 Lenovo Yoga C940-IIL  Battery Replacement: step 2, image 2 of 3 Lenovo Yoga C940-IIL  Battery Replacement: step 2, image 3 of 3
    • Using a plastic opening tool, remove the rubber foot.

  3. Lenovo Yoga C940-IIL  Battery Replacement: step 3, image 1 of 3 Lenovo Yoga C940-IIL  Battery Replacement: step 3, image 2 of 3 Lenovo Yoga C940-IIL  Battery Replacement: step 3, image 3 of 3
    • Using the Phillips #0 screwdriver, remove the three screws underneath the rubber foot.

  4. Lenovo Yoga C940-IIL  Battery Replacement: step 4, image 1 of 3 Lenovo Yoga C940-IIL  Battery Replacement: step 4, image 2 of 3 Lenovo Yoga C940-IIL  Battery Replacement: step 4, image 3 of 3
    • Using the T5 Torx screwdriver, remove the four remaining screws on the outside of the frame.

  5. Lenovo Yoga C940-IIL  Battery Replacement: step 5, image 1 of 3 Lenovo Yoga C940-IIL  Battery Replacement: step 5, image 2 of 3 Lenovo Yoga C940-IIL  Battery Replacement: step 5, image 3 of 3
    • Starting at the top and working around, carefully pry open the bottom cover.

  6. Lenovo Yoga C940-IIL  Battery Replacement: step 6, image 1 of 3 Lenovo Yoga C940-IIL  Battery Replacement: step 6, image 2 of 3 Lenovo Yoga C940-IIL  Battery Replacement: step 6, image 3 of 3
    • It is ok to use a little force when working around. Don't panic if you hear a few pops as you are doing this.

    • Remove the back cover from the device.

  7. Lenovo Yoga C940-IIL  Battery Replacement: step 7, image 1 of 3 Lenovo Yoga C940-IIL  Battery Replacement: step 7, image 2 of 3 Lenovo Yoga C940-IIL  Battery Replacement: step 7, image 3 of 3
    • The battery is held in place by four screws, one of which is hidden.

    • Remove this small piece of rubber is covering one of the screws with your fingers.

  8. Lenovo Yoga C940-IIL  Battery Replacement: step 8, image 1 of 2 Lenovo Yoga C940-IIL  Battery Replacement: step 8, image 2 of 2
    • Use the Phillips #0 screwdriver to remove the four screws securing the battery to the device.

  9. Lenovo Yoga C940-IIL  Battery Replacement: step 9, image 1 of 2 Lenovo Yoga C940-IIL  Battery Replacement: step 9, image 2 of 2
    • To complete the removal of the battery, disconnect the ribbon cable connecting the battery to the computer.

  10. Lenovo Yoga C940-IIL  Battery Replacement: step 10, image 1 of 1
    • Remove the battery from the device.

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

For optimal performance, after completing this guide, calibrate your newly installed battery.

Take your e-waste to an R2 or e-Stewards certified recycler.

Jeremiah Bush

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University of North Texas, Team 4-4, Thomas Fall 2021 crwdns2886886:0University of North Texas, Team 4-4, Thomas Fall 2021crwdne2886886:0

UNT-THOMAS-F21S4G4

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Thanks a lot for the clear and thorough guidelines, worked like a charm and saved my 2-year old C940 after its original battery has bloated on its own!

Leonid Glazychev - crwdns2853112:0crwdne2853112:0

Purhcased a replacement laptop battery from CanadaLaptopBattery, they shopped it from overseas (AlosteCell). Followed this guide to replace the battery. Replacing that little rubber piece was probably the biggest pain in the butt (the wire for the right speaker wraps around the rubber at the bottom as you squeeze it in). Thanks to the guide, this was one of the rare times I grabbed the right Torx bit first-try! Just a note; My laptop took several minutes after putting the new battery in (as well as being plugged in) to turn on. The laptop was on as indicated by the powerlight on the side, and the laptop was charging (orange light on the other side), but probably took 2-3 minutes to POST (Lenovo logo on screen). Just thought I'd mention that in case anyone freaks out.

Calvin Ing - crwdns2853112:0crwdne2853112:0

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