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Razer Blade 15" (2018) CMOS Battery Replacement

Introduction

Use this guide to replace the CMOS battery in your Razer Blade 15" (2018).

If your laptop shows a BIOS configuration screen every time it's powered on, the CMOS battery may have died. Replace the CMOS battery to retain certain boot settings on your laptop.

What you need

  1. Razer Blade 15" (2018) CMOS Battery Replacement, Prepare your laptop for disassembly: step 1, image 1 of 2 Razer Blade 15" (2018) CMOS Battery Replacement, Prepare your laptop for disassembly: step 1, image 2 of 2

    • Allow your laptop's battery to drain below 25% before starting this repair—a charged battery may catch fire if damaged.

    • Unplug all cables, fully shut down your laptop, and close the lid.

    Edit

  2. Razer Blade 15" (2018) CMOS Battery Replacement, Unfasten the back cover: step 2, image 1 of 1

    • Rotate your laptop so the screen hinge is farthest from you.

    • Use a Torx T5 driver to remove the ten 3.8 mm-long screws securing the back cover.

    Edit

  3. Razer Blade 15" (2018) CMOS Battery Replacement, Insert an opening pick: step 3, image 1 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Insert an opening pick: step 3, image 2 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Insert an opening pick: step 3, image 3 of 3

    • Depending on the age and condition of your laptop, the back cover may come off sooner than this guide instructs. If the cover feels loose, remove it at any time.

    • Apply a suction handle to the right edge of the back cover, between the middle screws and the screws closest to you.

    • Pull up on the suction handle to create a small gap between the back cover and the frame.

    • Insert an opening pick into the gap.

    Edit

  4. Razer Blade 15" (2018) CMOS Battery Replacement, Angle the opening pick: step 4, image 1 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Angle the opening pick: step 4, image 2 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Angle the opening pick: step 4, image 3 of 3

    • Angle your opening pick upward, away from the frame. Keep it angled upward as long as it's between the back cover and the frame.

    • Insert your pick up to 10 mm (0.4 in) deep.

    Edit

  5. Razer Blade 15" (2018) CMOS Battery Replacement, Free the bottom right corner: step 5, image 1 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Free the bottom right corner: step 5, image 2 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Free the bottom right corner: step 5, image 3 of 3

    • Slide your opening pick around the bottom right corner of the back cover to free it from the frame.

    Edit

  7. Razer Blade 15" (2018) CMOS Battery Replacement, Free the front edge: step 6, image 1 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Free the front edge: step 6, image 2 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Free the front edge: step 6, image 3 of 3

    • Slide your opening pick along the front edge and around the front left corner of the back cover to free it from the frame.

    Edit

  8. Razer Blade 15" (2018) CMOS Battery Replacement, Remove the back cover: step 7, image 1 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Remove the back cover: step 7, image 2 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Remove the back cover: step 7, image 3 of 3

    • Remove the back cover.

    • Lay the back cover down on its rubber feet to avoid damaging the gray thermal pads on its underside.

    Edit

  9. Razer Blade 15" (2018) CMOS Battery Replacement, Soften the battery cable tape adhesive: step 8, image 1 of 2 Razer Blade 15" (2018) CMOS Battery Replacement, Soften the battery cable tape adhesive: step 8, image 2 of 2

    • Apply a heated iOpener to the battery cable tape for one minute.

    • You can also use a hair dryer—but be careful, as overheating the battery may damage it or create a fire hazard.

    Edit

  10. Razer Blade 15" (2018) CMOS Battery Replacement, Peel up the battery cable tape: step 9, image 1 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Peel up the battery cable tape: step 9, image 2 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Peel up the battery cable tape: step 9, image 3 of 3

    • Be careful not to damage the battery with your tool.

    • Use blunt nose tweezers or your fingers to peel the battery cable tape away from the cable.

    Edit

  11. Razer Blade 15" (2018) CMOS Battery Replacement, Disconnect the battery: step 10, image 1 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Disconnect the battery: step 10, image 2 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Disconnect the battery: step 10, image 3 of 3

    • Use the point of a spudger to press on alternating sides of the battery connector and walk it out of its socket.

    Edit

  12. Razer Blade 15" (2018) CMOS Battery Replacement, Disconnect the CMOS battery: step 11, image 1 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Disconnect the CMOS battery: step 11, image 2 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Disconnect the CMOS battery: step 11, image 3 of 3

    • The CMOS battery is the flat, round battery with a twisted pair of wires connecting it to the motherboard.

    • Use the point of your spudger to press on alternating sides of the CMOS battery connector to "walk" it out of its socket and disconnect it.

    Edit

  13. Razer Blade 15" (2018) CMOS Battery Replacement, Pry up the CMOS battery: step 12, image 1 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Pry up the CMOS battery: step 12, image 2 of 3 Razer Blade 15" (2018) CMOS Battery Replacement, Pry up the CMOS battery: step 12, image 3 of 3

    • Slide an opening pick under the CMOS battery.

    • Use your pick to pry up the CMOS battery from the motherboard and separate the adhesive securing it.

    • If the battery feels stuck, apply a heated iOpener to the battery for 30 seconds to soften the adhesive.

    Edit

  14. Razer Blade 15" (2018) CMOS Battery Replacement, Remove the CMOS battery: step 13, image 1 of 2 Razer Blade 15" (2018) CMOS Battery Replacement, Remove the CMOS battery: step 13, image 2 of 2
    Tool used on this step:
    Tesa 61395 Tape
    $6.99
    Buy

    • Remove the CMOS battery.

    • During reassembly, apply double-sided tape to the new battery and press it into place on the circle indicator.

    Edit
Conclusion

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

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

Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.

Author

Clay Eickemeyer

Member since: 09/19/22

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