Introduction
Use this guide to replace a worn-out or dead battery in your Xiaomi Redmi Note 10S.
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.
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Prepare an iOpener and apply it to the back cover for at least two minutes to loosen the adhesive underneath.
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Secure a suction handle to the bottom edge of the back cover, 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 picks 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 phone 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 back cover to slice the remaining adhesive.
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Use a Phillips screwdriver to remove the four 3.9 mm-long screws securing the camera cover.
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Insert an opening pick into the gap beneath the bottom edge of the camera cover.
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Pry up the camera cover with your opening pick.
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Use your fingers or a pair of tweezers to remove the camera cover.
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Use a Phillips screwdriver to remove the twelve 3.9 mm-long screws securing the midframe.
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Insert a SIM card eject tool into the small hole in the SIM card tray, located at the left edge of the phone.
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Press directly into the hole to eject the SIM card tray.
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Remove the SIM card tray.
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Use a spudger to disconnect the power and volume button flex cable by prying the connector straight up from its socket.
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Insert an opening pick between the midframe and display assembly on the left edge of the phone where the SIM tray slot is located.
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Slide the opening pick along the left edge of the phone to release the plastic clips.
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Use a spudger to disconnect the battery flex cable by prying the connector straight up from its socket.
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Use a spudger to disconnect both ends of the daughterboard connection cable.
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Remove the daughterboard connection cable.
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Use a pair of blunt nose tweezers or a clean fingernail to peel off both battery adhesive pull-tabs to unstick them from the top edge of the battery.
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Grab the first pull-tab with a pair of blunt nose tweezers or your fingers and slowly pull it away from the battery towards the top edge of your phone.
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Pull hard enough to maintain tension on the strip, but don't force it. Give it plenty of time to stretch and unstick from under the battery.
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Don't press down on the battery. Hold the phone firmly by its sides.
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Keep the strip flat and unwrinkled. Try to pull evenly on the whole strip, rather than pulling in the middle or on one side.
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Pull at a low angle so the strip doesn't snag on the edge of the battery.
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Repeat the previous pull-tab removal procedure on the second pull-tab.
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Follow the same procedure as with the previous strip: don't press down on the battery, keep the strip flat and unwrinkled, and pull at a low angle.
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Wait about one minute for the alcohol solution to weaken the adhesive.
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Use the flat end of a spudger to gently lift 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.
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. During reassembly 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.
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.
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. During reassembly 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.
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