DIY Redmi K40 Pro | Xiaomi Mi 11X | Poco F3 BM4Y Battery Repair Guide

Before Starting, we need to have the right tools to proceed with the repair, which You can find in the description.

First, Take out the Sim tray and then the back cover removal.

To remove the back cover, it needs to heat gently around the rear cover edges until the pasted adhesive becomes soft.

For this, we are using a heating pad. Place the rear cover side on the heating pad and Select the mobile phone heating option and leave it till it completes. Alternatively, you can use a heat gun or hairdryer.

Once the heating has completed, Use a suction cup to create an opening between the frame and rear cover. Next, insert a plastic card pry tool or something similar to cut the adhesive around the back cover.

Take out the back cover and remove the board frame by undoing 11 screws and the flash connector plug.

Next, unplug the battery connector on the right-hand side.

Next, disconnect the main connector plug from the board.

Next, take out the not working battery; first, loosen the adhesives on the sides and pull them by the side tab. Be gentle and lift the battery.

Next, Place the new battery in the body and secure the adhesive.

Next, secure the main ribbon connector.

Next, secure the sensor connector and the battery connector. And place the frame by adding 11 screws.

Next, Before installing the main back cover, make sure it has enough glue; if not, use B7000 glue or a new double-sided back cover adhesive.

Finally, we are adding bonding clips to tighten the rear cover with the body. If not, you can use some rubber bands and Leave them for some time.

I hope you have enjoyed the repair guide. Let us know if you have any questions.