Apple has encrypted the battery of iPhone XS and models above. Once you replace the battery, you will get the “Important Battery
Message” and “Service” message. This makes our iPhone users feel bothered and annoyed.
To solve the problem, the latest solution has been verified. Today we will share solutions concerning iPhone XS and above models.
First of all, we will introduce the structure of the battery. The battery can be roughly divided into two parts – BMS board and battery
cell. The original battery data is stored on the BMS board, it is connected with the battery flex cable. We need to replace the new
battery BMS with the original one so that we can erase the warning.
Here is the detailed steps for replacing the BMS board.
First, Tear off the original battery bottom cover tape, separate and take out the BMS board.
Second, Disconnect the cathode and anode of the battery with a pair of scissors respectively.
Third, After cutting, clean the remaining iron pieces on the BMS board, and polish the solder joints with sandpaper. Please do not
break the flex cable.
Fourth, Clamp the new battery core and the flex cable on the aligning mold, the iron sheet of the new battery core is clamped in
the middle of the iron sheet of the BMS board, and weld it with a special electric welding machine.
The last step, after soldering, install the BMS board. apply the protection tape.
After completing the above steps, install the battery and reassemble the iPhone, non-genuine battery warning disappear.
For more details, you can refer to our video: https://www.youtube.com/watch?v=BksOOuCvjKU
What’s more, if you want to change the cycle count of the new battery, connect the battery to the specialized programmer
(iPhone XS and iPhone 11/12 series are different). Battery data on the BMS board can be seen. Recalibrate the cycle
times and battery efficiency can be done.
The final suggestion is that if you are not familiar with iPhone repair, please do not try the above steps. The whole process
requires special machinery and equipment, especially professional technical craftsmanship.