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OnePlus 8 Battery Replacement

What you need

  1. OnePlus 8 Battery Replacement, Heat the rear glass: step 1, image 1 of 1
    • Power off your phone and unplug any cables.

    • Heat an iOpener and apply it to the rear glass for two minutes.

    • You can also use a hair dryer, heat gun, or hot plate—but extreme heat can damage the display and internal battery, so proceed with care.

  2. OnePlus 8 Battery Replacement, Insert an opening pick: step 2, image 1 of 3 OnePlus 8 Battery Replacement, Insert an opening pick: step 2, image 2 of 3 OnePlus 8 Battery Replacement, Insert an opening pick: step 2, image 3 of 3
    • Apply a suction handle to the center of the bottom edge of the rear glass, as close to the edge as possible.

    • If your display is badly cracked, cover it with a layer of clear packing tape to help the suction cup adhere. Alternatively, you can pull using very strong tape instead of a suction cup. If all else fails, try supergluing the suction cup to the broken screen.

    • Pull up on the suction handle with strong, steady force to create a gap between the rear glass and frame.

    • Insert an opening pick into the gap.

  3. OnePlus 8 Battery Replacement, Slice the bottom edge adhesive: step 3, image 1 of 3 OnePlus 8 Battery Replacement, Slice the bottom edge adhesive: step 3, image 2 of 3 OnePlus 8 Battery Replacement, Slice the bottom edge adhesive: step 3, image 3 of 3
    • Slide the opening pick to the bottom right corner to slice the adhesive securing the rear glass.

    • Leave the opening pick in the bottom right corner to prevent the adhesive from resealing.

  4. OnePlus 8 Battery Replacement: step 4, image 1 of 3 OnePlus 8 Battery Replacement: step 4, image 2 of 3 OnePlus 8 Battery Replacement: step 4, image 3 of 3
    • Insert a second opening pick under the bottom edge of the rear glass, into the gap you just created.

    • Slide the opening pick to the bottom left corner to slice the adhesive.

    • Leave the opening pick in the bottom left corner to prevent the adhesive from resealing.

  5. OnePlus 8 Battery Replacement, Slice the left edge adhesive: step 5, image 1 of 3 OnePlus 8 Battery Replacement, Slice the left edge adhesive: step 5, image 2 of 3 OnePlus 8 Battery Replacement, Slice the left edge adhesive: step 5, image 3 of 3
    • If you have trouble slicing, reheat the iOpener and apply it to the edge for two minutes to soften the adhesive.

    • Insert a third opening pick under the bottom left corner of the rear glass.

    • Slide the opening pick up the left edge to slice the adhesive.

    • Leave the opening pick in the top left corner to prevent the adhesive from resealing.

  6. OnePlus 8 Battery Replacement, Slice the top edge adhesive: step 6, image 1 of 3 OnePlus 8 Battery Replacement, Slice the top edge adhesive: step 6, image 2 of 3 OnePlus 8 Battery Replacement, Slice the top edge adhesive: step 6, image 3 of 3
    • Insert a fourth opening pick under the top left corner of the rear glass.

    • Slide the opening pick along the top edge to slice the adhesive.

    • Leave the opening pick in the top right corner to prevent the adhesive from resealing.

  7. OnePlus 8 Battery Replacement, Slice the right edge adhesive: step 7, image 1 of 3 OnePlus 8 Battery Replacement, Slice the right edge adhesive: step 7, image 2 of 3 OnePlus 8 Battery Replacement, Slice the right edge adhesive: step 7, image 3 of 3
    • Insert a fifth opening pick under the top right corner of the rear glass.

    • Slide the opening pick down the right edge to slice the remaining adhesive.

  8. OnePlus 8 Battery Replacement, Remove the rear glass: step 8, image 1 of 3 OnePlus 8 Battery Replacement, Remove the rear glass: step 8, image 2 of 3 OnePlus 8 Battery Replacement, Remove the rear glass: step 8, image 3 of 3
    • Remove the rear glass.

    • If the rear glass still feels stuck to the frame, slide an opening pick around the entire perimeter until the rear glass separates completely.

    • During reassembly:

    • Secure the rear glass with pre-cut adhesive or double-sided adhesive tape.

    • After installing the rear glass, apply strong, steady pressure to your phone for several minutes to help the adhesive form a good bond.

  9. OnePlus 8 Battery Replacement, Unfasten the motherboard cover: step 9, image 1 of 1
    Tool used on this step:
    Tweezers
    $4.99
    Buy
    • A white sticker may cover a screw on the right edge of the motherboard cover. Pierce through it with the tip of your screwdriver or use tweezers to remove it.

    • Use a Phillips screwdriver to remove the eleven 3.3 mm-long screws securing the motherboard cover.

  10. OnePlus 8 Battery Replacement, Pry up the motherboard cover: step 10, image 1 of 3 OnePlus 8 Battery Replacement, Pry up the motherboard cover: step 10, image 2 of 3 OnePlus 8 Battery Replacement, Pry up the motherboard cover: step 10, image 3 of 3
    • The motherboard cover is secured by tight clips.

    • Insert the flat end of a spudger under the center of the motherboard cover's bottom edge.

    • Twist the spudger to release the clips.

    • Lever the motherboard cover up until you can grip it with your fingers.

  11. OnePlus 8 Battery Replacement, Remove the motherboard cover: step 11, image 1 of 2 OnePlus 8 Battery Replacement, Remove the motherboard cover: step 11, image 2 of 2
    • Remove the motherboard cover.

  12. OnePlus 8 Battery Replacement, Disconnect the battery cable: step 12, image 1 of 2 OnePlus 8 Battery Replacement, Disconnect the battery cable: step 12, image 2 of 2
    • Use a spudger to disconnect the battery cable by prying the connector straight up from its socket on the bottom left corner of the motherboard.

    • To re-attach press connectors like this one, carefully align and press down on one side until it clicks into place, then repeat on the other side. Don't press down in the middle. If the connector is misaligned, the pins can bend and cause permanent damage.

  13. OnePlus 8 Battery Replacement, Lift the tape on the battery: step 13, image 1 of 3 OnePlus 8 Battery Replacement, Lift the tape on the battery: step 13, image 2 of 3 OnePlus 8 Battery Replacement, Lift the tape on the battery: step 13, image 3 of 3
    • Use a spudger or your fingers to peel the tape up from the right edge of the battery.

    • Take care not to puncture the battery with sharp tools—a punctured or creased battery may leak dangerous chemicals or cause a fire.

  14. OnePlus 8 Battery Replacement, Lift up the battery: step 14, image 1 of 3 OnePlus 8 Battery Replacement, Lift up the battery: step 14, image 2 of 3 OnePlus 8 Battery Replacement, Lift up the battery: step 14, image 3 of 3
    • The battery is secured to the frame with adhesive. Pull tabs are provided to separate the adhesive and remove the battery.

    • Peel the red pull tab away from the top of the battery.

    • Using one hand to hold the phone steady, use your other hand to slowly and steadily lift the red pull tab up to separate the adhesive securing the battery underneath.

    • If you're having trouble removing the battery, you can apply an iOpener to the screen side to loosen the adhesive underneath the battery.

  15. OnePlus 8 Battery Replacement, Remove the battery: step 15, image 1 of 3 OnePlus 8 Battery Replacement, Remove the battery: step 15, image 2 of 3 OnePlus 8 Battery Replacement, Remove the battery: step 15, image 3 of 3
    • Never reuse a deformed or damaged battery—it's a fire hazard. Replace it with a new battery.

    • Peel the battery away from the extra tape on its left edge and remove it.

    • During reassembly:

    • Temporarily reconnect the battery to the motherboard before you press it into place to ensure correct alignment. Disconnect the battery after it's seated.

    • Secure the new battery with pre-cut adhesive or double-sided adhesive tape. In order to position it correctly, apply the new adhesive into the frame where the old adhesive was located, not directly onto the battery itself.

    • Press the new battery firmly into place to secure it.

Conclusion

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

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

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.

3 other people completed this guide.

Manuel Haeussermann

Member since: 07/13/22

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