Home/Products/Diagnosable iPhone Battery/iPhone 12 Pro Max Diagnosable Replacement Battery 4323mAh OEM Repair Battery Supplier

Factory direct iPhone 12 Pro Max diagnosable replacement battery with OEM quality, stable performance, no programming required, suitable for repair shops, wholesalers, distributors, and smartphone service providers.

iPhone 12 Pro Max Diagnosable Replacement Battery 4323mAh OEM Repair Battery Supplier

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Why Choose our iPhone 12 Pro Max Diagnosable Replacement Battery?

As a professional OEM smartphone battery manufacturer, we provide reliable iPhone replacement batteries for global repair businesses, distributors, and wholesalers.

Factory Direct Supply with Competitive Wholesale Pricing

Direct factory manufacturing provides competitive pricing, stable production capacity, and reliable supply solutions for repair shops, distributors, and global B2B customers.

Diagnosable Battery Solution Supporting Battery Health Recognition

Designed with diagnosable battery technology to support battery status recognition and improve professional repair workflows.

Strict Quality Control for Battery Performance and Safety

Each battery undergoes capacity testing, voltage testing, appearance inspection, safety verification, and final quality inspection before shipment.

Stable Bulk Production Capacity for Repair Channels

Reliable manufacturing capability ensures consistent inventory supply for smartphone repair chains, wholesalers, refurbishers, and replacement parts distributors.

OEM/ODM Customization Including Packaging and Branding

Support OEM logo printing, private-label packaging, customized labels, barcode solutions, and tailored battery services.

Fast Worldwide Shipping Support for B2B Customers

Provide professional export packaging and global logistics solutions through express delivery, air freight, and sea shipping.

Quick Specifications

Item	Specification
Battery Type	Lithium-ion Replacement Battery
Compatible Model	iPhone 12 Pro Max
Battery Capacity	4323mAh
Nominal Voltage	3.86V
Energy	16.68Wh
Charging Voltage	4.47V
Battery Function	Diagnosable Battery / Battery Health Recognition
Cell Type	Lithium-ion Cell
Quality Control	100% Tested Before Shipment
Warranty	12 Months
Certification	CE, RoHS, PSE
MOQ	Available for Bulk Orders
Shipping Method	Express / Air Freight / Sea Freight

What Is the iPhone 12 Pro Max Diagnosable Replacement Battery?

The iPhone 12 Pro Max Diagnosable Replacement Battery is a high-quality lithium-ion replacement battery designed for professional repair shops and distributors. It supports battery diagnosis functions and provides reliable power performance similar to the original battery.

Manufactured with stable lithium cells and strict quality control, this OEM replacement battery helps repair technicians restore iPhone battery performance while reducing installation issues and improving customer repair experience.

Key Features

1. Diagnosable Battery Technology

Supports battery status recognition after installation, helping repair professionals provide a better replacement experience.

2. Stable 4323mAh Capacity

Built with high-quality lithium-ion cells to deliver reliable battery life and consistent discharge performance for daily smartphone usage.

3. No Programming Required

Designed for easier installation and repair workflow, reducing additional programming steps during battery replacement.

4. Professional Quality Control

Each battery undergoes performance testing, voltage testing, capacity verification, and safety inspection before shipment.

5. OEM & Bulk Supply Capability

Supports wholesale orders, repair channel supply, private-label packaging, and customized solutions for global customers.

Compatible Models

Compatible Model	Battery Model	Capacity	Voltage
iPhone 12 Pro Max	A2466 / A2412 / A2411 / A2410	4323mAh	3.86V

Applications

Smartphone Repair & Replacement

This diagnosable replacement battery is designed for:

Smartphone repair shops
Mobile phone refurbishment companies
Electronics wholesalers
Online repair parts retailers
OEM service providers
Smartphone maintenance distributors

It provides a reliable battery replacement solution for businesses requiring stable inventory and consistent quality.

Original Battery vs Replacement Battery Comparison

Comparison	Original Battery	Our Diagnosable Replacement Battery
Battery Type	Lithium-ion Battery	Lithium-ion Replacement Battery
Capacity	3687mAh	4323mAh
Voltage	3.83V	3.86V
Repair Application	Original Device	Professional Repair Replacement
Battery Diagnosis	Limited Replacement Compatibility	Supports Diagnosable Function
Supply Availability	Limited Channel Supply	Factory Direct Bulk Supply
Custom Packaging	Not Available	OEM/ODM Supported
Wholesale Purchase	Limited	Available

FAQ

1. Is this iPhone 12 Pro Max replacement battery compatible with the original phone?

Yes. This battery is designed specifically for iPhone 12 Pro Max models and matches the original battery size and connector design.

2. Does this battery support battery health recognition?

Yes. The diagnosable battery solution is designed to support battery status recognition functions for professional repairs.

3. Do I need programming after installation?

No. This replacement battery is designed to simplify installation and reduce additional programming requirements.

4. What is the capacity of this iPhone 12 Pro Max battery?

The battery capacity is 4323mAh with a nominal voltage of 3.86V.

5. Can I order this battery in bulk?

Yes. We support wholesale orders for repair shops, distributors, refurbishing companies, and mobile phone parts suppliers.

6. Are samples available before bulk orders?

Yes. Customers can request samples for quality testing, compatibility verification, and performance evaluation before placing large orders.

7. Do you provide OEM packaging service?

Yes. We provide OEM packaging, private-label solutions, customized branding, barcode labels, and retail packaging services.

8. How do you ensure battery quality?

Every battery undergoes capacity testing, voltage testing, appearance inspection, safety checks, and final quality control before shipment.

9. What shipping methods are available?

We support international express, air shipping, and sea shipping solutions according to customer requirements.

10. What warranty do you provide?

We provide a 12-month warranty for qualified products and professional after-sales support for global B2B customers.

Our Factory

Since 2016, ESC has served B2B buyers with replacement batteries and charging products. We offer 3,000+ models for iPhone, Android phones, tablets and laptops, with flexible MOQs, lead times within seven days and a customer-reported defect rate below 1%. Since 2022, we have developed private-mold fast-charging power banks with broad protocol compatibility and thermal control. ESC supports brands, wholesalers, refurbishers and repair chains with OEM/ODM, certification and production services.

Our Certificates

OEM & ODM Battery Order Process

01
Customer Inquiry & Requirement Confirmation
Confirm battery models, capacity, quantity, target market, certification and customization requirements.
02
Quotation
Provide a detailed quotation based on product specifications, order quantity, packaging and delivery requirements.
03
Customization Details Confirmation
Confirm customized labels, barcodes, silk-screen artwork, logo printing, packaging and other branding details.
04
Order Confirmation
Finalize product specifications, quantities, unit prices, payment terms, delivery schedule and shipping method.
05
Deposit Payment
The customer pays the agreed deposit so that materials and production can be arranged.
06
Production Arrangement
Arrange material preparation, battery assembly, quality inspection, aging tests, packaging and order completion.
07
Balance Payment
The customer pays the remaining balance after production is completed and the order details are confirmed.
08
Shipment
Arrange shipment by an approved air, sea, railway or express channel according to the destination and order requirements.
09
Delivery & Receipt Follow-Up
Provide shipping documents and tracking information, and follow up until the customer receives the goods.
10
24/7 After-Sales Support
Provide responsive technical assistance, quality-issue analysis and after-sales solutions after delivery.

How to Choose a Reliable Replacement Battery Supplier

Evaluate cell quality, testing capability, assembly details, production consistency and installation support before purchasing smartphone, tablet or laptop replacement batteries.

Verify Battery Model Coverage and Compatibility

Choose a supplier with broad coverage for smartphone, tablet and laptop batteries. Confirm the original battery code, device model, connector position, dimensions, rated voltage and system compatibility before ordering.

A supplier with an established model database can reduce incorrect shipments, installation problems and compatibility-related returns.

Check the Quality of Cells and Electronic Components

Battery quality starts with the raw materials. Ask the supplier about:

Battery-cell manufacturer and grade
Actual cell capacity
Cell cycle life
PCB and protection-chip solution
Connector and flex-cable quality
Traceability of key components

Reliable suppliers should use graded cells rather than selecting components only by the lowest price.

Review Incoming Material Inspection and Cell Grading

Cells should be tested and grouped according to:

Capacity
Voltage
Internal resistance
Self-discharge
Thickness and dimensions
Appearance

Proper cell grading improves consistency between batteries from the same production batch and reduces abnormal runtime, swelling and early failure.

Require Complete Electrical and Compatibility Testing

A professional supplier should test more than the open-circuit voltage. Quality verification should include:

Charging and discharging performance
Actual capacity
Battery current
Protection functions
Cycle count and battery data
Fuel-gauge parameters
Device compatibility
Temperature performance

Professional battery testers can perform charging, discharging, current calibration and precise parameter comparison, helping identify batteries whose measured data does not match the approved specification.

Evaluate Automation and Production Consistency

Automated production processes normally provide better consistency and higher capacity than heavily manual assembly.

Important processes may include:

Automatic cell sorting
Automatic welding
Automatic PCB testing
Automatic adhesive application
Barcode traceability
In-line functional inspection

Automation does not replace quality control, but it helps reduce variation caused by manual positioning, welding and assembly.

Inspect Assembly Details

Small assembly details have a major effect on installation efficiency and product reliability.

A well-finished battery should include:

Pre-applied battery adhesive
Dust-proof protective film
Protective sleeve around the flex cable
Fixed flex-cable position
Stable connector orientation
No loose or moving battery cable
Clean edges and accurate dimensions

These details reduce flex-cable damage, dust contamination, installation movement and incorrect connector alignment.

Confirm In-Process and Final Quality Inspection

The supplier should conduct inspection throughout production rather than checking only finished goods.

Recommended checkpoints include:

Incoming material inspection
Cell grading
PCB and BMS testing
Welding inspection
Assembly inspection
Capacity testing
Aging testing
Appearance inspection
Packaging inspection
Final random inspection

Ask whether inspection data can be traced back to the production batch.

Compare Capacity Claims, Defect Rate and Certification

Do not select batteries based only on the highest printed capacity.

A credible supplier should provide:

Tested capacity data
Clear rated voltage and energy
Customer-reported defect rate
Warranty policy
CE, RoHS, FCC, MSDS and UN38.3 documentation where applicable
Model-specific certification support

Exaggerated capacity labels without matching cell space, weight and test data are a significant purchasing risk.

Follow Correct Battery Installation Procedures

Even a qualified battery can fail if it is installed incorrectly.

Before installation:

Discharge the original battery below 25%
Power off the device
Use non-metallic opening tools
Disconnect the battery before handling other internal components
Avoid puncturing, bending or crushing the cell
Remove the protective film from the adhesive correctly
Align the battery and connector before pressing it into place
Confirm that the flex cable is not folded, stretched or trapped
Reinstall screws and brackets in their original positions
Test charging, battery recognition and device functions before final sealing

The installation guide specifically warns that a charged lithium-ion battery may catch fire or explode if punctured, and instructs technicians to power off the phone before disassembly.

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