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はじめに

Use this guide to remove or replace the battery on your Xiaomi Mi 11.

If your battery is swollen, take appropriate precautions.

For your safety, discharge your battery below 25% before disassembling your phone. This reduces the risk of a dangerous thermal event if the battery is accidentally damaged during the repair.

You’ll need replacement adhesive to reattach components when reassembling the device.

Note: In this guide we’re using a teardown device. This means that the motherboard has been deshielded during the teardown procedure. You can still do all the repairs with this guide but your motherboard will look like this.

  1. Mi 11 Battery Replacement, Heat the rear glass: 手順 1、 1の画像 1
    • Prepare an iOpener and apply it to the rear glass for at least two minutes to loosen the adhesive underneath.

    • A hair dryer, heat gun, or hot plate may also be used, but be careful not to overheat the phone—the display and internal battery are both susceptible to heat damage.

  2. Mi 11 Battery Replacement, Insert an opening pick: 手順 2、 3の画像 1 Mi 11 Battery Replacement, Insert an opening pick: 手順 2、 3の画像 2 Mi 11 Battery Replacement, Insert an opening pick: 手順 2、 3の画像 3
    • Secure a suction handle to the bottom edge of the rear glass, as close to the edge as possible.

    • If the rear glass is cracked, the suction handle may not stick. Try lifting it with strong tape, or superglue the suction handle in place and allow it to cure so you can proceed.

    • Lift the back cover with the suction handle to create a small gap between the back cover and the frame.

    • In case you have trouble creating a gap, apply more heat to further soften the adhesive. Follow the iOpener instructions to avoid overheating.

    • Insert an opening pick into the gap you created.

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

    • Leave the opening pick in place to prevent the adhesive from resealing.

  3. Mi 11 Battery Replacement, Slice the adhesive: 手順 3、 2の画像 1 Mi 11 Battery Replacement, Slice the adhesive: 手順 3、 2の画像 2
    • Insert a second opening pick at the bottom edge of your phone.

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

    • Leave the opening pick in place to prevent the adhesive from resealing.

  4. Mi 11 Battery Replacement, Slice the adhesive: 手順 4、 3の画像 1 Mi 11 Battery Replacement, Slice the adhesive: 手順 4、 3の画像 2 Mi 11 Battery Replacement, Slice the adhesive: 手順 4、 3の画像 3
    • If the adhesive becomes hard to cut, it has most likely cooled down. Use your iOpener to reheat it.

    • Insert a third opening pick at the bottom left corner of your phone.

    • Slide the opening pick along the left edge of your Xiaomi Mi 11 to slice the adhesive.

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

  5. Mi 11 Battery Replacement: 手順 5、 2の画像 1 Mi 11 Battery Replacement: 手順 5、 2の画像 2
    • Insert a fourth opening pick underneath the top left corner of your phone.

    • 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.

  6. Mi 11 Battery Replacement: 手順 6、 2の画像 1 Mi 11 Battery Replacement: 手順 6、 2の画像 2
    • Insert a fifth opening pick underneath the top right corner.

    • Slide the opening pick along the right edge of the rear glass to slice the remaining adhesive.

  7. Mi 11 Battery Replacement, Remove the rear glass: 手順 7、 2の画像 1 Mi 11 Battery Replacement, Remove the rear glass: 手順 7、 2の画像 2
    • Remove the rear glass.

    • Apply new adhesive where necessary after cleaning the relevant areas with isopropyl alcohol (>90%).

    • Secure the new 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—a stack of heavy books works well.

  8. Mi 11 Battery Replacement, Unfasten the metal bracket screws: 手順 8、 1の画像 1
    • Use a Phillips screwdriver to remove the screws securing the connector metal bracket and the camera cover:

    • Two 4.4 mm-long screws

    • One 4.9 mm-long screw

    • Two 3.9 mm-long screws

  9. Mi 11 Battery Replacement, Remove the metal bracket: 手順 9、 3の画像 1 Mi 11 Battery Replacement, Remove the metal bracket: 手順 9、 3の画像 2 Mi 11 Battery Replacement, Remove the metal bracket: 手順 9、 3の画像 3
    • Use a pair of tweezers to remove the connector bracket by pulling it in the direction of the battery.

  10. Mi 11 Battery Replacement, Disconnect the flash assembly: 手順 10、 2の画像 1 Mi 11 Battery Replacement, Disconnect the flash assembly: 手順 10、 2の画像 2
    • Use the pointed end of a spudger to disconnect the flash assembly cable by prying the connector straight up from its socket.

  11. Mi 11 Battery Replacement, Disconnect the right battery cable: 手順 11、 2の画像 1 Mi 11 Battery Replacement, Disconnect the right battery cable: 手順 11、 2の画像 2
    • The battery of the Xiaomi Mi 11 has two separate flex cables. You need to disconnect both in order to disconnect the battery completely.

    • Use a spudger to disconnect the right battery cable by prying the connector straight up from its socket.

  12. Mi 11 Battery Replacement, Remove the camera cover: 手順 12、 2の画像 1 Mi 11 Battery Replacement, Remove the camera cover: 手順 12、 2の画像 2
    • Use your fingers or a pair of tweezers to carefully lift the camera cover including the flash assembly off the camera lenses and remove it.

  13. Mi 11 Battery Replacement, Unfasten the motherboard cover screws: 手順 13、 1の画像 1
    • Use a Phillips screwdriver to remove the five 3.9 mm-long screws securing the motherboard cover.

  14. Mi 11 Battery Replacement, Pry up the motherboard cover: 手順 14、 2の画像 1 Mi 11 Battery Replacement, Pry up the motherboard cover: 手順 14、 2の画像 2
    • Insert an opening pick underneath the bottom left edge of the motherboard cover.

    • Slide the opening pick along the left edge of the motherboard cover and pry it up.

  15. Mi 11 Battery Replacement, Remove the motherboard cover: 手順 15、 2の画像 1 Mi 11 Battery Replacement, Remove the motherboard cover: 手順 15、 2の画像 2
    • Remove the motherboard cover.

  16. Mi 11 Battery Replacement, Disconnect the left battery cable: 手順 16、 2の画像 1 Mi 11 Battery Replacement, Disconnect the left battery cable: 手順 16、 2の画像 2
    • Use a spudger to disconnect the left battery cable by prying the connector straight up from its socket.

  17. Mi 11 Battery Replacement, Disconnect the left interconnect cable: 手順 17、 2の画像 1 Mi 11 Battery Replacement, Disconnect the left interconnect cable: 手順 17、 2の画像 2
    • Use a spudger to disconnect the left interconnect cable by prying the connector straight up from its socket.

  18. Mi 11 Battery Replacement, Disconnect the right interconnect cable: 手順 18、 2の画像 1 Mi 11 Battery Replacement, Disconnect the right interconnect cable: 手順 18、 2の画像 2
    • Use a spudger to disconnect the right interconnect cable by prying the connector straight up from its socket.

  19. Mi 11 Battery Replacement, Free the battery: 手順 19、 3の画像 1 Mi 11 Battery Replacement, Free the battery: 手順 19、 3の画像 2 Mi 11 Battery Replacement, Free the battery: 手順 19、 3の画像 3
    • During the following step do not fold the cables sharply and only bend them to avoid cable damage.

    • Fold the interconnect flex cables towards the charging port in order to get access to the battery pull tabs.

    • You might want to use a small piece of tape to temporarily stick the cables onto your working surface to avoid accidentally damaging them during the battery removal.

  20. Mi 11 Battery Replacement, Peel off the battery pull-tabs: 手順 20、 3の画像 1 Mi 11 Battery Replacement, Peel off the battery pull-tabs: 手順 20、 3の画像 2 Mi 11 Battery Replacement, Peel off the battery pull-tabs: 手順 20、 3の画像 3
    • Take care not to puncture or bend the battery with your tool—a punctured or bent battery may leak dangerous chemicals or cause a thermal event.

    • Use a pair of blunt nose tweezers or a clean fingernail to peel the orange adhesive strip labelled with an A off the battery.

    • Use a pair of blunt nose tweezers or a clean fingernail to peel the orange adhesive strip labelled with a B off the battery.

  21. Mi 11 Battery Replacement, Remove the battery: 手順 21、 3の画像 1 Mi 11 Battery Replacement, Remove the battery: 手順 21、 3の画像 2 Mi 11 Battery Replacement, Remove the battery: 手順 21、 3の画像 3
    • Grab both pull–tab ends labelled with an A and pull up on the orange adhesive strip to lift the battery out of its recess and swing it up to an upright position.

    • Although these adhesive tabs are supposed to make the battery removal easier, they may require some force. In case you're having trouble removing the battery, you can apply a heated iOpener to the center of the display to loosen the adhesive underneath.

    • Peel the battery off the remaining adhesive.

    • Remove the battery.

    • During reassembly, temporarily reconnect the battery to the motherboard to help align it correctly. Disconnect the battery after it is seated.

    • In case you're replacing the adhesive sticker with a new one, peel the battery's adhesive sticker off the midframe and clean the relevant areas with isopropyl alcohol (>90%). Let the alcohol dry before installing new adhesive.

終わりに

If possible, turn on your device and test your repair before installing new adhesive and resealing.

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

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 device at the places where the old adhesive was located, not directly onto the battery. Press the new battery firmly into place.

Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before installing.

To reassemble your device, follow these instructions in reverse order. Apply new adhesive where necessary after cleaning the relevant areas with isopropyl alcohol (>90%).

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.

Dominik Schnabelrauch

メンバー登録日: 2016年11月23日

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