Einleitung
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.
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Prepare an iOpener and apply it to the rear glass for at least two minutes to loosen the adhesive underneath.
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Secure a suction handle to the bottom edge of the rear glass, as close to the edge as possible.
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Lift the back cover with the suction handle to create a small gap between the back cover and the frame.
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Insert an opening pick into the gap you created.
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Slide the opening pick to the bottom right corner to slice the adhesive.
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Leave the opening pick in place to prevent the adhesive from resealing.
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Insert a second opening pick at the bottom edge of your phone.
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Slide the opening pick to the bottom left corner to slice the adhesive.
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Leave the opening pick in place to prevent the adhesive from resealing.
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Insert a third opening pick at the bottom left corner of your phone.
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Slide the opening pick along the left edge of your Xiaomi Mi 11 to slice the adhesive.
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Leave the opening pick in the top left corner to prevent the adhesive from resealing.
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Insert a fourth opening pick underneath the top left corner of your phone.
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Slide the opening pick along the top edge to slice the adhesive.
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Leave the opening pick in the top right corner to prevent the adhesive from resealing.
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Insert a fifth opening pick underneath the top right corner.
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Slide the opening pick along the right edge of the rear glass to slice the remaining adhesive.
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Use a Phillips screwdriver to remove the screws securing the connector metal bracket and the camera cover:
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Two 4.4 mm-long screws
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One 4.9 mm-long screw
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Two 3.9 mm-long screws
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Use a pair of tweezers to remove the connector bracket by pulling it in the direction of the battery.
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Use the pointed end of a spudger to disconnect the flash assembly cable by prying the connector straight up from its socket.
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Use a spudger to disconnect the right battery cable by prying the connector straight up from its socket.
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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.
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Use a Phillips screwdriver to remove the five 3.9 mm-long screws securing the motherboard cover.
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Insert an opening pick underneath the bottom left edge of the motherboard cover.
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Slide the opening pick along the left edge of the motherboard cover and pry it up.
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Use a spudger to disconnect the left battery cable by prying the connector straight up from its socket.
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Use a spudger to disconnect the left interconnect cable by prying the connector straight up from its socket.
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Use a spudger to disconnect the right interconnect cable by prying the connector straight up from its socket.
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Fold the interconnect flex cables towards the charging port in order to get access to the battery pull tabs.
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Use a pair of blunt nose tweezers or a clean fingernail to peel the orange adhesive strip labelled with an A off the battery.
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Use a pair of blunt nose tweezers or a clean fingernail to peel the orange adhesive strip labelled with a B off the battery.
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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.
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Peel the battery off the remaining adhesive.
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Remove the battery.
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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.
