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> BATTERY > Apple Battery > Iphone Battery > Battery for Apple iPhone 12 Pro Max 3687mAh Diagnostic
Battery for Apple iPhone 12 Pro Max
After installing the Diagnostic battery, the repair is completed quickly, and the battery health displays 100%.
Compatible with iOS 18.3, it eliminates pop-up warning messages and ensures optimal performance.
Installation is simple - just mount it and use your phone immediately.
Specifications:
- The original BMS board does not need to be attached or glued; it can be discarded or kept
- 100% Battery Health instantly, with no firmware rewriting required
- No Warning Messages - no battery notifications after installation
- Direct Installation - no additional steps, just install and use
- Fully compatible with iOS 18.3
Note: Apple has released the latest iOS 26.0 develop beta version. Only the diagnostic iPhone battery is incompatible with iOS 26.0.
Please ask your customers not to upgrade to iOS 26.0 version.
If you have already upgraded to iOS 26.0, the solution is for you to downgrade the system to iOS 18.5 so that the battery can work normally.
Info! Installation must be performed by an authorized GSM service technician. Otherwise, the product warranty will be voided.
With the latest iOS 18.3 update, Apple introduced Repair Assistant, an innovative tool that allows calibration of new or used parts after replacement.
Battery Setup Instructions:
1. Ensure your device is updated to iOS 18.
2. Go to Settings > General > About > Parts & Service History.
3. Tap "Restart & Finish Repair" to activate Repair Assistant.
4. Follow the on-screen instructions to complete the calibration.
