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Xiaomi Redmi Note 7 Battery Replacement

What you need

  1. Xiaomi Redmi Note 7 Battery Replacement, Loosen the rear glass adhesive: step 1, image 1 of 1
    • Apply a heated iOpener to the rear glass to loosen the adhesive underneath. Apply the iOpener for at least two minutes.

  2. Xiaomi Redmi Note 7 Battery Replacement, Insert an opening pick: step 2, image 1 of 3 Xiaomi Redmi Note 7 Battery Replacement, Insert an opening pick: step 2, image 2 of 3 Xiaomi Redmi Note 7 Battery Replacement, Insert an opening pick: step 2, image 3 of 3
    • Secure a suction handle to the bottom edge of the rear glass, as close to the edge as possible.

    • If your rear glass is badly cracked, covering it with a layer of clear packing tape may allow the suction cup to adhere. Alternatively, very strong tape may be used instead of the suction cup. If all else fails, you can superglue the suction cup to the rear glass.

    • Lift the rear glass with the suction handle to create a small gap between the glass 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.

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

  3. Xiaomi Redmi Note 7 Battery Replacement, Slice the bottom edge adhesive: step 3, image 1 of 2 Xiaomi Redmi Note 7 Battery Replacement, Slice the bottom edge adhesive: step 3, image 2 of 2
    • Insert a second opening pick and slide it to the bottom left corner to slice the adhesive.

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

  4. Xiaomi Redmi Note 7 Battery Replacement, Slice the lefthand-side adhesive: step 4, image 1 of 3 Xiaomi Redmi Note 7 Battery Replacement, Slice the lefthand-side adhesive: step 4, image 2 of 3 Xiaomi Redmi Note 7 Battery Replacement, Slice the lefthand-side adhesive: step 4, image 3 of 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.

    • Slide the opening pick along the left edge of the phone to slice the rear glass adhesive.

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

  5. Xiaomi Redmi Note 7 Battery Replacement, Slice the top edge adhesive: step 5, image 1 of 2 Xiaomi Redmi Note 7 Battery Replacement, Slice the top edge adhesive: step 5, image 2 of 2
    • Insert a fourth opening pick under the top left corner of the rear glass.

    • Slide the opening pick along the top edge of the phone to slice the rear glass adhesive.

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

  6. Xiaomi Redmi Note 7 Battery Replacement, Slice the righthand-side adhesive: step 6, image 1 of 2 Xiaomi Redmi Note 7 Battery Replacement, Slice the righthand-side adhesive: step 6, image 2 of 2
    • Insert a fifth opening pick at the top right corner of the phone.

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

    • Don't try to remove the rear glass all the way yet. The fingerprint sensor is still connected to the motherboard.

  7. Xiaomi Redmi Note 7 Battery Replacement, Open up the phone assembly: step 7, image 1 of 3 Xiaomi Redmi Note 7 Battery Replacement, Open up the phone assembly: step 7, image 2 of 3 Xiaomi Redmi Note 7 Battery Replacement, Open up the phone assembly: step 7, image 3 of 3
    • Carefully fold the rear glass to the left side of the phone assembly like you'd open the front cover of a book.

    • Avoid tensioning the fingerprint flex cable during this process.

  8. Xiaomi Redmi Note 7 Battery Replacement, Unfasten the screws: step 8, image 1 of 1
    • Use a Phillips screw driver to remove the three 3.3 mm-long screws securing the connector cover to the midframe.

  9. Xiaomi Redmi Note 7 Battery Replacement, Remove the connector cover: step 9, image 1 of 2 Xiaomi Redmi Note 7 Battery Replacement, Remove the connector cover: step 9, image 2 of 2
    Tool used on this step:
    Tweezers
    $4.99
    Buy
    • Use a pair of tweezers to remove the connector cover.

  10. Xiaomi Redmi Note 7 Battery Replacement, Disconnect the battery: step 10, image 1 of 2 Xiaomi Redmi Note 7 Battery Replacement, Disconnect the battery: step 10, image 2 of 2
    • Use the flat end of a spudger to pry up and disconnect the battery flex cable from the motherboard.

  11. Xiaomi Redmi Note 7 Battery Replacement, Peel the protective foil off: step 11, image 1 of 2 Xiaomi Redmi Note 7 Battery Replacement, Peel the protective foil off: step 11, image 2 of 2
    Tool used on this step:
    Tweezers
    $4.99
    Buy
    • For easier handling during repairs we highly recommend to separate the back cover including the fingerprint sensor from the phone assembly.

    • Use a pair of tweezers to carefully peel the yellow protective foil off the ZIF connector.

  12. Xiaomi Redmi Note 7 Battery Replacement, Open the ZIF connector: step 12, image 1 of 2 Xiaomi Redmi Note 7 Battery Replacement, Open the ZIF connector: step 12, image 2 of 2
    • Use the pointed end of a spudger to open the ZIF connector by bringing its black flap in an upright position.

  13. Xiaomi Redmi Note 7 Battery Replacement, Disconnect the fingerprint flex cable: step 13, image 1 of 2 Xiaomi Redmi Note 7 Battery Replacement, Disconnect the fingerprint flex cable: step 13, image 2 of 2
    • Disconnect the fingerprint flex cable by pulling it straight out off the ZIF connector using a pair of tweezers.

  14. Xiaomi Redmi Note 7 Battery Replacement, Unfasten the screws: step 14, image 1 of 1
    • Use a Phillips screw driver to remove the eight 3.3 mm-long screws securing the loudspeaker assembly.

  15. Xiaomi Redmi Note 7 Battery Replacement, Remove the loudspeaker assembly: step 15, image 1 of 3 Xiaomi Redmi Note 7 Battery Replacement, Remove the loudspeaker assembly: step 15, image 2 of 3 Xiaomi Redmi Note 7 Battery Replacement, Remove the loudspeaker assembly: step 15, image 3 of 3
    • Slide an opening pick underneath the right edge of the loudspeaker assembly.

    • Use the opening pick to pry up the loudspeaker assembly.

    • Remove the loudspeaker assembly.

  16. Xiaomi Redmi Note 7 Battery Replacement, Disconnect the main flex cable: step 16, image 1 of 2 Xiaomi Redmi Note 7 Battery Replacement, Disconnect the main flex cable: step 16, image 2 of 2
    • Use the flat end of a spudger to pry up and disconnect the main flex cable.

  17. Xiaomi Redmi Note 7 Battery Replacement, Unfasten the screw: step 17, image 1 of 1
    • Use a Phillips screw driver to remove the 3.3 mm-long screw securing the display connector cover to the midframe.

  18. Xiaomi Redmi Note 7 Battery Replacement, Remove the display connector cover: step 18, image 1 of 2 Xiaomi Redmi Note 7 Battery Replacement, Remove the display connector cover: step 18, image 2 of 2
    Tool used on this step:
    Tweezers
    $4.99
    Buy
    • Use a pair of tweezers to remove the display connector cover.

  19. Xiaomi Redmi Note 7 Battery Replacement, Disconnect the display flex cable: step 19, image 1 of 2 Xiaomi Redmi Note 7 Battery Replacement, Disconnect the display flex cable: step 19, image 2 of 2
    • Use the flat end of a spudger to pry up and disconnect the display flex cable.

  20. Xiaomi Redmi Note 7 Battery Replacement, Remove the main flex cable: step 20, image 1 of 3 Xiaomi Redmi Note 7 Battery Replacement, Remove the main flex cable: step 20, image 2 of 3 Xiaomi Redmi Note 7 Battery Replacement, Remove the main flex cable: step 20, image 3 of 3
    • Use the flat end of a a spudger to pry up and disconnect the main flex cable.

    • Remove the main flex cable.

  21. Xiaomi Redmi Note 7 Battery Replacement, Fold back the display flex cable: step 21, image 1 of 1
    • Fold the display flex cable towards the bottom edge of the phone and secure it to your working surface with a small piece of tape.

    • Take care not to puncture or bend the battery with your tool in the following steps —a punctured or bent battery may leak dangerous chemicals or cause a thermal event.

  22. Xiaomi Redmi Note 7 Battery Replacement, Remove the pull tabs: step 22, image 1 of 3 Xiaomi Redmi Note 7 Battery Replacement, Remove the pull tabs: step 22, image 2 of 3 Xiaomi Redmi Note 7 Battery Replacement, Remove the pull tabs: step 22, image 3 of 3
    • Use a pair of blunt nose tweezers to peel the black colored end of the left pull tab off the battery.

    • Grab the pull tab with your tweezers and slowly pull it away from the battery, toward the bottom of the Redmi Note 7.

    • Pull hard enough to maintain tension on the strip, but don't force it. Give it plenty of time to stretch and detach from the battery.

    • Don't press down on the battery. Hold the Redmi Note 7 firmly by its sides.

    • Keep the strip flat and unwrinkled. Try to pull evenly on the whole strip, rather than pulling mainly in the middle or on one side.

    • Pull at a low angle so the strip doesn't snag on the edge of the battery.

    • A good way to get this done is to pull out the adhesive strip about 3 cm and then roll it up on your tweezers.

    • If the adhesive strip breaks off, try to retrieve it using your fingers or blunt tweezers, and continue pulling—but do not pry under the battery.

  23. Xiaomi Redmi Note 7 Battery Replacement: step 23, image 1 of 3 Xiaomi Redmi Note 7 Battery Replacement: step 23, image 2 of 3 Xiaomi Redmi Note 7 Battery Replacement: step 23, image 3 of 3
    • Use a pair of blunt nose tweezers to peel the black colored end of the right pull tab off the battery.

    • Grab the pull tab with your tweezers and slowly pull it away from the battery, toward the bottom of the Redmi Note 7.

  24. Xiaomi Redmi Note 7 Battery Replacement, Remove the battery: step 24, image 1 of 3 Xiaomi Redmi Note 7 Battery Replacement, Remove the battery: step 24, image 2 of 3 Xiaomi Redmi Note 7 Battery Replacement, Remove the battery: step 24, image 3 of 3
    • Remove the battery.

Conclusion

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

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.

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

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

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.

23 other people completed this guide.

Dominik Schnabelrauch

Member since: 11/23/16

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6 Comments

Thanks for the guide. Do you think it's possible to use the phone without gluing the back on again? But instead using a case to hold the back on. My rubber case reaches around to the front of the phone, and seems like it would hold the flat back glass on quite well, while also keeping out dust. Or is this just a bad idea?

Evocativekitsune - Reply

Hi Evocativekitsune,

I wouldn't advise to do that. It happens often that dust finds its way underneath the phone case and therefore straight into your phone. I suggest to use at least some regular double sided tape (you can cut it in small strips by yourself) to glue the back cover selectively back onto the midframe. It's still not the best protection however it's better than a completely loose cover. Don't forget to remove the old adhesive backings before applying new adhesive!

Dominik Schnabelrauch -

Thanks for the detailed guide!
Unfortunately I wasn't carefully enough when wedging the first opening pick below the glass back cover, and it cracked. I was still able to follow the guide and replace the battery successfully. I will order a new back, which does not cost a lot and should hopefully come with new adhesives as well.
One thing to note though when reassembling the device:
The main flex cable has the same connector on both sides and can therefore be plugged in incorrectly. I didn't pay close enough attention to the orientation and after reassembling, the phone didn't turn on, as something seemed to short out. Fortunately nothing got damaged, but be careful to connect the cable the right way round.
The flex cable has printed markings "MB" and "SUB". Connect the side marked with "MB" to the Motherboard on top of the phone and the side marked with "SUB" to the daughterboard below with the charging circuitry.

Matthias Thym - Reply

I did this exercise today with my redmi 7. But the internal anatomy looks different.

1. Xiomi has been very liberal with the glue. Just to make repair hell?

2. There is no need to remove the speaker assembly. Just fold back the two fat cables.

3. Use rubber cement to seal back. Apply a very thin layer on the body and let it dry for 5 mins. The press the back firmly and keep it under several books to apply pressure evenly.

chhammi - Reply

I love you~~

Birb Papi - Reply

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