iPhone Third Party Battery Pop-up Warning Solution Updated

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When the battery health of an iPhone is below 80%, users often consider replacing it with a new battery. While official Apple batteries are expensive and have long waiting times, some users opt for third-party batteries with standard or high capacity.

However, starting from A12 processor models, Apple introduced a battery protection chip, causing a pop-up warning and no battery health display when a third-party battery is installed.

Model Chipset BMS Encryption
iPhone 6 / 6 Plus A8 None
iPhone 6S / 6S Plus A9 None
iPhone 7 / 7 Plus A10 None
iPhone 8 / 8 Plus A11 None
iPhone SE A9 None
iPhone SE 2nd A13 Chip
iPhone SE 3rd A15 Chip + New Algorithm
iPhone X A11 None
iPhone XR / XS / XS Max A12 Chip
iPhone 11 / 11 Pro / 11 Pro Max A13 Chip + New Algorithm
iPhone 12 / 12 Mini / 12 Pro / 12 Pro Max A14 Chip + New Algorithm
iPhone 13 / 13 Mini / 13 Pro / 13 Pro Max A15 Chip + New Algorithm
iPhone 14 / 14 Plus A15 Chip + New Algorithm
iPhone 14 Pro / 14 Pro Max A16 Chip + New Algorithm

Which iPhone Model is BMS encryption protected

What can we do about the pop-up warning?

As a third-party battery manufacturer, BenleyTech respects Apple’s intellectual property considerations and focuses on improving battery quality instead of developing battery hacks.

To address the pop-up warning, there are two options for third-party repairs.


Users can choose to replace the battery with a high-quality third-party battery without further modifications, accepting the difference in performance mainly related to the absence of the original protection circuit.

Replacing BMS

Users can choose to replace only the battery cells while retaining the original Battery Management System (BMS) protection board. For this method, there are currently two commonly used approaches in the repair market.

Methods for iPhone XR, XS, XS Max and SE2

The old original BMS board is soldered onto a high-quality third-party bare cell. The stored battery cycle and efficiency parameters in the old BMS board are reset as shown in left video. If the new battery is directly installed, the system recognizes that the battery serial number hasn’t changed, and it won’t overwrite the old battery health data. In this case, there are two solutions in the repair market: (a) Connect the phone to a battery with a different serial number, and the system will continue to display the repair message. Then, reinstall the new battery, and the system will overwrite the pre-set battery health parameters, completing the battery replacement. (b) Flash the underlying battery data into the BMS board, directly modifying the battery serial number data inside the encryption chip. After reinstalling the phone, the system reads the new serial number battery data, completing the battery replacement.

Methods for all series models of iPhone 11, 12, 13, & 14

To eliminate the pop-up warning, the BMS protection board from the old battery needs to be transferred directly into the new battery. In this case, the phone continues to use the old battery health data. Due to the dual protection of the encryption chip in the BMS board and the new encryption algorithm, it is currently not possible to directly write data into the BMS encryption chip. As a result, the market has introduced tag-on flexes that are installed between the phone’s mainboard and the battery BMS board, shown in the video on the right. These flexes intercept and provide disguised battery health parameters to the iOS system. The calibration of the battery health parameters is quick, eliminating the need for the 3-5 day charging and discharging cycles. However, if the firmware of the tag-on flex is not updated promptly after an iOS system update, errors may occur. Additionally, considering the cost of the tag-on flex and the running cycles, repair shops suggest users use their phones normally to restore battery health. By disabling battery optimization and fully discharging and recharging the battery each time, the recovery speed of battery health can be accelerated.

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