iPhone 12 Pro Max 3687mAh Cracked battery, programmed with Battery Health function, no authenticity message displayed.

• Installation: The installation of the Diagnostic battery is completed quickly and the battery health displays 100%.
• Compatibility: Compatible with iOS 18.3, eliminates warning messages and ensures optimal performance.
• Simple installation: Place the battery and use the phone immediately.

Specifications:

• The original BMS board does not need to be attached or soldered; it can be discarded or kept.
• 100% Battery Health immediately, no firmware rewriting required.
• No warnings - no battery notifications after installation.
• Instant installation - no extra steps, just install and use.
• Fully compatible with iOS 18.3.

Note: The diagnostic iPhone battery is incompatible with iOS 26.0. It is recommended not to upgrade to iOS 26.0, and if upgraded, to downgrade the system to iOS 18.5 for the battery to function properly.

Installation should be performed by an authorized GSM technician. Otherwise, the product warranty will be void.