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iPhone 12 Pro Max Battery Cell 3687mAh Without Flex

iPhone 12 Pro Max Battery Cell 3687mAh Without Flex






Why Choose ESC iPhone 12 Pro Max Battery Cell?

Professional iPhone Battery Manufacturer

ESC is an experienced iPhone battery manufacturer serving repair chains, refurbishment facilities, mobile phone parts wholesalers, international distributors, e-commerce sellers and private label battery brands.

Professional research and development, automatic production equipment and standardized quality-control processes support consistent product specifications and repeat-order quality.

Factory-Direct Wholesale Supply

Purchasing from a factory direct battery wholesaler gives professional buyers direct access to production, quality inspection, OEM customization, packaging and after-sales support.

ESC supports sample evaluation, single-model orders, mixed-model purchasing and long-term bulk battery supply programs.

Model-Matched 3687mAh Capacity

The battery cell has a rated capacity of 3687mAh and a standard voltage of 3.83V.

Its electrical specifications and physical structure are designed for the battery compartment and operating requirements of the iPhone 12 Pro Max.

Brand-New Pure Cobalt Cell

The product uses a brand-new pure cobalt lithium-ion cell designed to provide stable voltage output, controlled internal resistance and consistent charging and discharging performance.

The listed cycle-life target is more than 800 charging cycles under appropriate charging, storage and operating conditions.

Strict Quality Control

Battery cells are inspected for appearance, dimensions, voltage, internal resistance, capacity, charging performance and self-discharge behavior.

Individual testing, aging inspection and final quality checks help maintain a factory defect-rate target below 0.1%.

OEM Battery Factory Support

As an OEM battery factory, ESC supports customized battery labels, customer logos, private label packaging, barcode labels, instruction cards, warranty cards and export-carton markings.

These services help wholesalers, distributors and private label battery suppliers create differentiated replacement battery product lines.

Flexible Wholesale MOQ

The single-model MOQ is 20 pieces. Mixed-model wholesale orders can start from 100 pieces, subject to the selected models, packaging and customization requirements.

Samples are available for professional wholesale customers to evaluate before bulk purchasing.

Stable Lead Time

Standard products can typically be prepared within approximately seven days when materials and inventory are available.

Customized labels, private packaging and larger production quantities may require additional production time.

Global Battery Shipping

Available transportation methods include DHL, UPS, air freight, sea freight, railway freight and road transportation.

The appropriate shipping route can be selected according to the order quantity, destination, customs requirements, delivery schedule and transportation budget. esccharge.com

Quick Specifications

Specification Details
Product Name iPhone 12 Pro Max Battery Cell Without Flex
Compatible Device iPhone 12 Pro Max
Compatible Model Numbers A2342, A2410, A2411 and A2412
Battery Type Rechargeable Lithium-Ion Battery Cell
Cell Material Brand-New Pure Cobalt Cell
Rated Capacity 3687mAh
Standard Voltage 3.83V
Product Configuration Battery Cell Without Pre-Installed Flex Cable or BMS
Cycle Life More Than 800 Charging Cycles
Charging Time Approximately 1–3 Hours
Working Temperature -10°C to 50°C
Factory Defect-Rate Target Below 0.1%
Customer-Reported Defect Rate Below 1%
Standard Lead Time Within Approximately 7 Days for Standard Orders
Warranty 12 Months
Single-Model MOQ 20 Pieces
Mixed-Model MOQ 100 Pieces
OEM Service Custom Logo, Battery Label, Barcode and Private Packaging
Certifications ISO 9001, CE, RoHS, FCC, IEC 62133, PSE, REACH, UL 2054, MSDS and UN38.3
Express Shipping DHL or UPS, Approximately 3–6 Days
Sea Freight Approximately 20–40 Days
Railway Freight Approximately 30–35 Days
Road Transportation Approximately 20–25 Days
Shipping Port Shenzhen

Certificate availability, production time, MOQ and transportation schedule should be confirmed according to the selected production batch, destination, quantity and packaging requirements. esccharge.com

iPhone 12 Pro Max battery cell

What Is an iPhone 12 Pro Max Battery Cell?

Product Definition

An iPhone 12 Pro Max battery cell is a 3687mAh, 3.83V lithium-ion replacement cell supplied without flex or BMS for professional repair and refurbishment. ESC is an iPhone battery manufacturer, phone battery supplier and OEM battery factory offering strict QC, private label service and global shipping.

This product is an aftermarket replacement battery cell intended for professional B2B supply. It is not an original Apple battery or an Apple-authorized service part.

Key Features

1. Model-Matched 3687mAh Capacity

The rated 3687mAh capacity and 3.83V standard voltage are designed for the electrical requirements and internal battery format of the iPhone 12 Pro Max.

Professional buyers can request sample testing to verify measured capacity, voltage stability and installation compatibility before approving a bulk order.

2. Cell-Only Professional Configuration

The product is supplied without a pre-installed flex cable or BMS.

This configuration is suitable for qualified technicians using an appropriate cell-transfer, flex-transfer or professional battery-assembly procedure.

3. More Than 800 Charging Cycles

The brand-new pure cobalt cell has a listed cycle-life target of more than 800 charging cycles under suitable charging, storage and operating conditions.

Actual cycle life depends on charging voltage, discharge depth, device temperature, charger quality and daily use.

4. Strict Batch Inspection

Capacity testing, voltage measurement, internal-resistance inspection, charging and discharging tests, aging inspection and appearance checks help improve production consistency.

Batch-level quality control helps wholesalers and repair businesses reduce early failures, abnormal runtime and avoidable after-sales claims.

5. OEM and Private Label Support

Custom logos, battery labels, retail boxes, barcode labels, instruction cards, warranty cards and export cartons are available for professional wholesale programs. esccharge.com

Compatible iPhone 12 Pro Max Models

Device Model Number Primary Market or Region
iPhone 12 Pro Max A2342 United States
iPhone 12 Pro Max A2410 Canada and Japan
iPhone 12 Pro Max A2411 Other Countries and Regions
iPhone 12 Pro Max A2412 China Mainland, Hong Kong and Macao

This battery cell is designed for the 6.7-inch iPhone 12 Pro Max. It is not compatible with the iPhone 12 Mini, iPhone 12 or iPhone 12 Pro.

Buyers should verify the device model number, original battery shape, dimensions and required repair configuration before ordering.

Applications

Mobile Phone Repair Shops

Suitable for professional technicians replacing aged, damaged, fast-draining or low-capacity iPhone 12 Pro Max battery cells.

Refurbishment Facilities

Supports batch refurbishment programs requiring model-specific battery cells, consistent electrical specifications and stable repeat supply.

Mobile Phone Parts Wholesalers

The product can be included in a wholesale replacement battery range for repair shops, technicians, service centers and regional distributors.

Repair Chain Stores

Centralized purchasing helps repair chains maintain standardized specifications, predictable inventory and consistent battery quality across multiple service locations.

Private Label Battery Brands

OEM battery customization enables battery brands to add custom logos, battery labels, packaging, barcodes, instructions and warranty information.

E-Commerce Battery Sellers

Suitable for online sellers requiring accurate model identification, retail-ready packaging, stable inventory and repeat wholesale supply.

International Distributors

Mixed-model purchasing, export documentation and multiple transportation methods support regional distribution and international wholesale programs.

ESC Replacement Battery Cell vs Original Factory Battery

Comparison Item ESC Replacement Battery Cell Original Factory Battery
Product Type Compatible aftermarket replacement cell Factory-installed battery assembly
Compatible Device iPhone 12 Pro Max iPhone 12 Pro Max
Capacity Positioning Rated 3687mAh Model-specific factory capacity
Standard Voltage 3.83V Original model-specific electrical specification
Battery Chemistry Pure Cobalt Lithium-Ion Cell Lithium-Ion Battery
Product Condition Brand-New Replacement Cell Brand-New When Originally Installed
Flex Cable Not Included Original Flex Cable Integrated
BMS Not Included Original Management Components Integrated
Installation Method Professional Cell-Transfer or Assembly Required Installed During Manufacturing or Official Service
Battery Recognition Depends on Transferred Components, Repair Method and Device Software Managed Through the Original Battery System
Battery Health Display Not Guaranteed by the Replacement Cell Alone Normally Supported When the Original System Operates Correctly
Warning-Message Behavior Depends on Flex, Repair Procedure and Device Software Normally Managed Through the Original Device System
Branding ESC, Neutral Label or Customized Private Label Original Manufacturer Identification
Packaging Standard Wholesale or Customized OEM Packaging Original Service-Channel Packaging
Wholesale Availability Available for Professional B2B Purchasing Subject to Original Service-Channel Policies
OEM Labeling Supported Not Available for Third-Party Branding
Private Packaging Supported Not Available
Order Flexibility Supports Single-Model, Mixed-Model and Customized Orders Limited by Official Service-Channel Availability
Single-Model MOQ 20 Pieces Generally Unavailable Through Flexible Aftermarket Wholesale
Warranty 12-Month Supplier Warranty Subject to Original Manufacturer Service Terms
Target Customers Repair Shops, Refurbishers, Wholesalers and Distributors Original Manufacturing and Authorized Service Networks
Cost Positioning Competitive Professional Replacement Solution Generally Positioned Within the Official Service Ecosystem

Battery recognition, Battery Health display and warning-message behavior depend on the transferred electronic components, repair process, device software and service procedure. esccharge.com

Quality Control Process

Incoming Cell Inspection

Incoming battery cells are checked for appearance, dimensions, voltage, internal resistance and material consistency before entering production.

Cell Grading

Cells are sorted according to measured capacity, voltage, internal resistance, thickness and self-discharge performance to improve consistency within each production batch.

Capacity Verification

Professional battery analyzers are used to verify whether the measured cell capacity meets the approved 3687mAh product specification.

Charging and Discharging Test

Charging and discharging performance is tested to identify abnormal current, unstable voltage, excessive temperature or early capacity loss.

Aging Inspection

Aging tests help identify abnormal self-discharge and unstable electrical performance before battery cells are approved for shipment.

Final Inspection

Battery appearance, dimensions, labels, quantities, packaging and customer requirements are checked before the order is released. esccharge.com

OEM and Private Label Service

Custom Battery Labels

Customer logos, product models, capacities, voltages, warning information, batch numbers and traceability codes can be printed on the battery label.

Private Label Packaging

Available options include individual retail boxes, inner trays, protective packaging, barcode labels, instruction cards and warranty cards.

Barcode and SKU Management

Customized barcodes, model codes and SKU labels help wholesalers manage multiple mobile phone battery models and purchasing batches.

Mixed-Model Purchasing

Different smartphone, tablet and laptop battery models can be combined according to confirmed quantities and production requirements.

Export Carton Customization

Outer-carton labels, shipping marks, model information, quantities and customer branding can be customized for international shipments. esccharge.com

Ordering Information

Quotation Requirements

Provide the required battery model, quantity, destination country, packaging requirements, logo files, certification requirements and preferred shipping method.

Sample Evaluation

Professional wholesale buyers can request samples to evaluate dimensions, voltage, measured capacity, appearance, repair compatibility and packaging quality.

Product Configuration Confirmation

Confirm that the required product is an iPhone 12 Pro Max battery cell without a pre-installed flex cable or BMS.

Buyers requiring a complete replacement battery assembly should provide detailed configuration requirements before ordering.

Bulk Production

Bulk production begins after the product model, quantity, label artwork, packaging, payment terms and delivery requirements are confirmed.

Shipping Arrangement

The recommended logistics route is selected according to battery quantity, destination, customs requirements, delivery schedule and transportation budget.

FAQ

1. What is the capacity of the iPhone 12 Pro Max battery cell?

The rated capacity is 3687mAh, and the standard voltage is 3.83V. It is designed for professional iPhone 12 Pro Max battery repair and refurbishment.

2. Which iPhone model numbers are compatible with this battery cell?

It is compatible with iPhone 12 Pro Max model numbers A2342, A2410, A2411 and A2412.

It is not compatible with the iPhone 12 Mini, iPhone 12 or iPhone 12 Pro.

3. Does the battery cell include a flex cable or BMS?

No. This product is supplied as a battery cell without a pre-installed flex cable or BMS.

A qualified technician must use an appropriate professional transfer or battery-assembly procedure.

4. Is this an original Apple battery?

No. It is a compatible aftermarket replacement battery cell manufactured for professional repair, refurbishment and wholesale markets.

It is not an original Apple battery or an Apple-authorized service part.

5. Will Battery Health display normally after installation?

The battery cell alone does not guarantee Battery Health display, battery recognition or warning-message behavior.

These functions depend on the transferred flex cable, battery-management components, repair method, device software and service procedure.

6. Who should install the iPhone 12 Pro Max battery cell?

Installation should be completed by a trained mobile phone repair technician using appropriate battery-transfer equipment and safe operating procedures.

The cell-only product is not intended for inexperienced consumer installation.

7. What is the minimum order quantity?

The single-model MOQ is 20 pieces. Mixed-model wholesale orders can start from 100 pieces.

Final quantities should be confirmed according to the selected models, packaging and customization requirements.

8. Can ESC customize the battery label and packaging?

Yes. ESC supports custom logos, battery labels, retail boxes, barcode labels, instruction cards, warranty cards and export-carton markings.

9. How is battery quality checked before shipment?

Typical inspections include appearance checking, voltage measurement, internal-resistance testing, capacity verification, charging and discharging tests, aging inspection and final packaging checks.

10. What warranty and shipping methods are available?

A 12-month supplier warranty is available for qualified product-quality issues.

Available shipping methods include DHL, UPS, air freight, sea freight, railway freight and road transportation. Delivery time depends on the destination, customs clearance and selected logistics route.

我们的工厂

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.

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我们的证书

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OEM & ODM Battery Order Process

  1. 01

    Customer Inquiry & Requirement Confirmation

    Confirm battery models, capacity, quantity, target market, certification and customization requirements.

  2. 02

    Quotation

    Provide a detailed quotation based on product specifications, order quantity, packaging and delivery requirements.

  3. 03

    Customization Details Confirmation

    Confirm customized labels, barcodes, silk-screen artwork, logo printing, packaging and other branding details.

  4. 04

    Order Confirmation

    Finalize product specifications, quantities, unit prices, payment terms, delivery schedule and shipping method.

  5. 05

    Deposit Payment

    The customer pays the agreed deposit so that materials and production can be arranged.

  6. 06

    Production Arrangement

    Arrange material preparation, battery assembly, quality inspection, aging tests, packaging and order completion.

  7. 07

    Balance Payment

    The customer pays the remaining balance after production is completed and the order details are confirmed.

  8. 08

    Shipment

    Arrange shipment by an approved air, sea, railway or express channel according to the destination and order requirements.

  9. 09

    Delivery & Receipt Follow-Up

    Provide shipping documents and tracking information, and follow up until the customer receives the goods.

  10. 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.

1

Check the Quality of Cells and Electronic Components

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

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

  • 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
2

Review Incoming Material Inspection and Cell Grading

Cells should be tested and grouped according to:

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

  • Capacity
  • Voltage
  • Internal resistance
  • Self-discharge
  • Thickness and dimensions
  • Appearance
3

Require Complete Electrical and Compatibility Testing

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

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.

  • Charging and discharging performance
  • Actual capacity
  • Battery current
  • Protection functions
  • Cycle count and battery data
  • Fuel-gauge parameters
  • Device compatibility
  • Temperature performance
4

Evaluate Automation and Production Consistency

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

Important processes may include:

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

  • Automatic cell sorting
  • Automatic welding
  • Automatic PCB testing
  • Automatic adhesive application
  • Barcode traceability
  • In-line functional inspection
5

Inspect Assembly Details

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

A well-finished battery should include:

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

  • 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
6

Confirm In-Process and Final Quality Inspection

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

Recommended checkpoints include:

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

  • Incoming material inspection
  • Cell grading
  • PCB and BMS testing
  • Welding inspection
  • Assembly inspection
  • Capacity testing
  • Aging testing
  • Appearance inspection
  • Packaging inspection
  • Final random inspection
7

Compare Capacity Claims, Defect Rate and Certification

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

A credible supplier should provide:

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

  • 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
8

Follow Correct Battery Installation Procedures

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

Before installation:

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.

  • 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
9

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