Introduction
The battery is the component that powers all the other aspects of your Xiaomi Mi A2 (Model M1804D2SG). The use and charging cycle of a battery can cause it to degrade in its charging capacity and over time your phone may not hold a charge as much as it used to. If your Xiaomi Mi A2 is not turning on make sure to follow the steps outlined in this troubleshooting guide before resorting to a replacement.
If your battery is swollen, take appropriate precautions. Do not heat your phone. If needed, you can use a dropper or syringe to inject isopropyl alcohol (90+%) around the edges of the back cover to weaken the adhesive. Swollen batteries can be very dangerous, so wear eye protection and exercise due caution, or take it to a professional if you’re not sure how to proceed.
For optimal performance, calibrate your newly installed battery: Charge it to 100% and keep charging it for at least 2 more hours. Then use your device until it shuts off due to low battery. Finally, charge it uninterrupted to 100%.
What you need
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Grab a suction cup tool and place it near the bottom of the phone.
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Pull up on the suction cup to slightly lift the LCD Panel from the body of the phone.
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Starting from the bottom, slide in a plastic opening tool between the gap of the LCD and the phone.
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Using a combination of the plastic opening tool and picks, slide around the gaps to unhook the clips, unhinging the panel from the body of the phone.
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Flip the phone screen towards the bottom of the device and lay the screen facing down.
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Using a plastic spudger remove the battery connector ribbon cable by getting underneath the connector and gently lifting it off.
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Using a plastic sudger remove the screen connector ribbon cable by lifting from the underneath.
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After you remove the ribbon cable the panel should be free to remove and replace.
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On the bottom of the battery are two pull tabs. They are glued on to the battery similarly like a sticker.
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To remove the battery pull these pull tabs downwards. WARNING: proceed with extreme caution, avoid bending or puncturing the battery.
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You can use tweezers to lift the pull tabs from the battery. Pull downwards and the adhesive will slowly be removed from the battery.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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Team
UC Santa Barbara, Team S27-G27, Bator Fall 2019 Member of UC Santa Barbara, Team S27-G27, Bator Fall 2019
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3 Comments
I tried to remove the battery and tried to remove those strips carefully but the both broke so is there another way i could remove the battery
The link for the replacement battery is wrong, it leads to a battery for the xiaomi mi a2 lite which doesn’t fit into the mi a2 because the connector is at a different position
I just replaced the battery and just a heads up if anyone is struggling to remove the screen from the body - there was adhesive, so warm it up a little if it doesn’t lift easily. Reminded me a bit of iPhone 6s screen removal as the screen was near the same structure, cable was in different place.
