Battery 661-56128 4252mAh by iPhone 17 Pro eSIM A3523 Service Pack

Battery 4252mAh for iPhone 17 Pro eSIM (A3523) 661-56128 Service Pack – eSIM version ONLY

Battery module for Apple iPhone 17 Pro EXCLUSIVELY eSIM version (A3523) in Service Pack quality designed to restore autonomy, energy stability and device performance. This variant is specific for models without physical SIM tray, therefore it is NOT compatible with Single SIM or Dual SIM versions with physical tray. It features a 4252mAh capacity optimized for stable charge cycles, efficient consumption and full integration with the device electronics. Includes verified compatibility with iPhone 17 Pro eSIM (A3523) and part number 661-56128 or equivalent. Intended for professional installation, with cold testing required before closing the device.

Key features

• Capacity: 4252mAh
• Nominal voltage: 3.85V
• Battery type: Lithium-Ion
• Compatibility: iPhone 17 Pro eSIM (A3523)
• Exclusivity: NOT valid for physical SIM versions
• Part No: 661-56128 or equivalent
• Integrated management: thermal protection and charge control
• Precise connectivity for direct installation without modifications

Service Pack quality ensures perfect fit and full compatibility with the internal architecture specific to the eSIM version. This battery provides consistent power delivery, avoiding performance drops and optimizing usage between charge cycles. Its integration with the system ensures stable and reliable battery status reading and energy management. Designed for technicians and repair shops, it reduces issues caused by SIM version incompatibilities, simplifies installation and ensures a safe and durable repair. Ideal for restoring original autonomy without compatibility risks.

Installation tips

Disconnect the battery before handling the device.

Use proper tools and ESD protection.

Perform charge test before final closure.

Avoid bending or puncturing the battery.

Replace adhesives and clean internal residues.

Perform full calibration after installation.

Notice

This battery is free from non-original replacement warning in iOS after installation. However, future iOS updates may change this behavior, as Apple may modify verification policies at software or firmware level.

Technical table

Brand Compatible models Technical model Part Number Component type Dimensions Capacity/Voltage Quality
Apple iPhone 17 Pro eSIM (NOT physical SIM versions) A3523 661-56128 or equivalent Battery — 4252mAh / 3.85V Service Pack