OEM / ODM Custom Interconnect Solutions
Custom Magnetic Cable Assembly

2 Pin Magnetic Charging Cable for Wearable Devices

A compact 2 pin magnetic charging cable assembly for wearable electronics and other detachable charging interfaces. The cable-side magnetic head mates with a separate device-side component, while the two electrical contacts are assigned according to the approved Pin Map. Cable length, opposite-end termination, voltage, current capability, magnetic retention and device-side mounting are project-specific.

Confirm the Complete Cable Assembly
Magnetic End Pin count, shape and mating direction
Cable Construction Length, conductor and outer jacket
Opposite Termination USB, Type-C, DC or custom wire end
Electrical Functions Power, signal, detection or control

A Magnetic Cable Is More Than the Connector End

The finished assembly must define the magnetic mating component, internal conductor arrangement, cable construction and the opposite-end connection as one complete electrical system.

01

Magnetic Mating Interface

Confirm Pin count, contact allocation, magnet arrangement, connector shape, polarity control and mating direction.

02

Cable Construction

Define cable length, conductor count, wire specification, shielding requirements, jacket and flexibility.

03

Opposite-End Termination

Select USB, Type-C, DC plug, bare wire, terminal, PCB connection or another customized termination.

04

Device-Side Integration

Confirm installation space, outlet direction, strain relief, exposed-contact state and user operation.

2 PIN MAGNETIC CHARGING CABLE

Engineering Summary

This 2 pin magnetic charging cable is a complete cable assembly designed for compact wearable-device charging interfaces. The visible architecture combines a molded cable-side magnetic charging head, two electrical contact positions and a separate device-side mating component.

The two contacts are assigned according to the approved Pin Map. Charging is the confirmed application direction for this product, while any data-transfer function should be specified separately and must not be inferred from the two-pin interface alone.

Magnets assist capture and retention during mating. Final position, alignment and seating should be established by the mating housings and mechanical geometry, while the pogo contacts provide electrical contact and controlled Z-axis compliance.

Wearable Charging Interface Architecture

The compact two-contact structure can be evaluated for wearable products where the available charging-interface area is limited and the cable needs to be removable during normal use.

Pin Count Two electrical contact positions

Primary Function Wearable-device charging

Cable Interface Molded magnetic charging head

Device Interface Separate mating component shown

2-Pin Charging Pin Map

The approved drawing should identify Pin 1, viewing direction, electrical polarity and the function of both contact positions.

A two-pin charging interface should not rely on appearance alone to determine polarity. The cable-side and device-side drawings should use the same reference convention so that the contact assignment cannot be mirrored accidentally during mechanical integration or wiring.

Charging function is confirmed for this product. Data-transfer capability, communication protocol or data rate should only be stated if the complete electrical architecture has been defined and validated for that purpose.

Magnetic Capture and Mechanical Seating

The magnetic structure assists the cable head during approach and helps retain the charging interface after engagement.

Magnetic capture, retention, separation and peel behavior are different mechanical conditions. The required magnetic behavior should be defined according to the device geometry and intended user interaction rather than by selecting the strongest possible magnetic force.

Final position and alignment should be controlled by the mating housing, mechanical datums, guides and seating surfaces. Magnetic attraction alone should not define the final compression of the electrical contacts.

Working Stroke and Mating Tolerance

The spring-loaded contacts should operate within the approved working stroke after the cable head and device-side component reach their intended seated position.

Working stroke and total travel are different parameters. The normal operating compression should consider contact height, housing tolerance, device-side mounting position and the complete mechanical stack-up.

Pogo contacts provide electrical connection and controlled axial compliance. They should not function as the primary mechanical hard stop of the wearable-device assembly.

Charging Current and Complete Conductive Path

The supported charging current cannot be determined from pogo pin diameter, cable-head size or pin count alone. The complete conductive path must be reviewed.

Power Source → Opposite-End Termination → Cable Conductors → Magnetic Cable Head → Pogo Contact Interface → Device-Side Contact → Device PCB → Charging Circuit / Battery

Vdrop = I × Rpath
Ploss = I² × Rpath

Cable length, conductor gauge, termination resistance, pogo contact resistance, device-side PCB copper and operating temperature all contribute to the final charging-path performance.

Continuous current and peak current should therefore be defined together with permitted voltage drop, temperature rise and charging duty conditions.

Cable Construction and Opposite-End Termination

The magnetic charging head is only one part of the complete cable assembly. Cable length, conductor gauge, cable jacket, strain-relief structure and the opposite-end termination should be specified according to the charging system.

USB-A, USB-C, custom plug, bare wire or another termination should only be stated after the approved cable drawing confirms the required configuration.

For wearable charging products that are handled frequently, cable exit geometry and bending conditions should also be included in the mechanical design review.

Product Specifications

SpecificationDetails
Product Type2 Pin Magnetic Charging Cable Assembly
Pin Count2 Pin
Primary FunctionCharging
Application DirectionWearable Electronics
Interface ShapeCompact Rounded-Rectangular / Capsule Style
Contact ArrangementTwo Contacts in Linear Arrangement
Cable-Side InterfaceMolded Magnetic Charging Head
Device-Side Mating ComponentShown in Product Image; Supply Scope To Be Confirmed
Magnetic FunctionCapture + Retention
Final Position / AlignmentControlled by Mechanical Mating Geometry
Pin MapDefined by Approved Drawing
Charging FunctionConfirmed
Data Transfer FunctionTo Be Confirmed
Cable LengthProject-Specific
Opposite-End TerminationTo Be Confirmed
VoltageProject-Specific
Current CapabilityProject-Specific; Validate Complete Conductive Path
Working StrokeDefined by Approved Drawing
Total TravelTo Be Confirmed
Spring ForceProject-Specific
Magnetic RetentionProject-Specific
Device-Side MountingTo Be Confirmed
Cable Jacket / MaterialTo Be Confirmed
Contact Material / PlatingTo Be Confirmed
Cycle LifeTo Be Confirmed
Operating TemperatureTo Be Confirmed
IP RatingNot Claimed Without Complete Assembly Validation

Customization Options

CTP can review the complete two-pin magnetic charging cable architecture around the wearable device, charging circuit and mechanical interface.

  • Two-pin charging Pin Map and polarity
  • Cable length and finished-length tolerance
  • Conductor gauge and charging-current requirement
  • Opposite-end termination
  • Cable jacket and flexibility
  • Cable-head size and outlet direction
  • Device-side mating-component geometry
  • Magnetic capture, retention and release behavior
  • Strain-relief and overmold structure
  • Environmental requirements of the finished wearable device

Application Fit

This compact 2 pin magnetic charging cable can be evaluated for wearable products that require a detachable charging interface and limited connector space.

  • Smart watches
  • Fitness trackers
  • Compact wearable electronics
  • Wearable accessories with removable charging cables
  • Customer-defined compact charging interfaces

Application suitability depends on the charging Pin Map, electrical load, cable construction, mating geometry, magnetic behavior and environmental requirements of the finished product.

Environmental Considerations for Wearable Devices

Wearable products may encounter moisture, sweat, dust and frequent handling, but the application environment alone does not establish a corrosion or waterproof rating for the charging cable.

Contact materials, plating, cable construction, housing geometry and sealing features should be specified for the intended environment and validated under defined test conditions.

An IP rating applies only when the complete mating assembly and device enclosure have been defined and tested to the required protection level.

Information Engineers Should Provide

  • 2-pin Pin Map and polarity
  • Pin 1 orientation and viewing direction
  • Operating voltage
  • Continuous and peak charging current
  • Allowed voltage drop and temperature rise
  • Cable length
  • Wire gauge and cable-construction requirements
  • Opposite-end termination
  • Available X / Y / Z space
  • Device-side mounting and mating geometry
  • Required working stroke
  • Magnetic retention and preferred release behavior
  • Cable routing and bending conditions
  • Environmental requirements
  • 2D / 3D drawings when available
  • Expected project volume

FAQ

Is this a magnetic connector or a complete charging cable?

This product is a complete 2 pin magnetic charging cable assembly. The magnetic connector head is one part of the cable system, which also includes cable conductors, strain relief, opposite-end termination and a device-side mating interface.

What are the two pins used for?

The exact electrical allocation is defined by the approved Pin Map. Charging is the confirmed function, but contact polarity and Pin 1 orientation should be specified on the drawing.

Does this 2 pin charging cable support data transfer?

Data transfer should not be assumed from the two-pin interface. Any communication function, protocol or data rate must be confirmed through the complete electrical architecture.

What charging current can this magnetic cable support?

Charging current is project-specific and must be validated across the complete conductive path, including the cable conductors, terminations, magnetic interface, pogo contacts, device PCB and charging circuit.

How does the magnetic interface position the charging head?

The magnets assist capture and retention. Final position, alignment and seating should be controlled by the mating housings and mechanical geometry rather than magnetic force alone.

What is the working stroke of the pogo contacts?

Working stroke is defined by the approved drawing and should be distinguished from total mechanical travel. The operating compression should be selected after considering the complete mating tolerance stack.

Can the cable length and opposite-end connector be customized?

Yes. Cable length, conductor construction and opposite-end termination can be defined according to the approved project requirements.

Is this magnetic charging cable waterproof or sweat-resistant?

No waterproof or sweat-resistance rating should be assumed from the product appearance. Environmental protection depends on the complete cable, mating interface, device enclosure and validated sealing design.

Is the device-side mating component included?

A separate device-side mating component is shown in the product image, but the exact supply scope should be confirmed during quotation and drawing review.

What information is needed for a custom wearable magnetic charging cable?

Provide the Pin Map, polarity, voltage, continuous and peak current, cable length, opposite-end termination, working stroke, magnetic requirements, device-side geometry, environmental requirements and available 2D or 3D drawings.

CUSTOM WEARABLE CHARGING CABLE DEVELOPMENT

Request an Engineering Review

Send CTP your 2-pin Pin Map, polarity, voltage, continuous and peak charging current, cable length, opposite-end termination, working stroke, magnetic requirements and device-side drawings. Our engineering team can review the complete charging interface before quotation and sample development. Request Custom Quote & Samples

Engineering Review for 2 Pin Magnetic Charging Cable for Wearable Devices

This product page presents a CTP magnetic cable assembly configuration for engineering reference. Final dimensions, electrical ratings, materials, magnet structure, sealing level and reliability targets are not universal values; they are confirmed against the approved drawing, installation condition and model-specific validation plan.

Information to provide for evaluation

  • source-side interface and device-side magnetic head
  • pin definition, current, voltage and signal requirements
  • cable length, conductor, jacket, shielding and strain relief
  • magnetic retention, polarity, sealing, color and packaging
  • sample quantity, validation plan and forecast volume

How specifications are confirmed

CTP reviews the application and prepares a drawing or specification for approval before sample production. Test scope, acceptance criteria and report format should identify the model, sample status, method, conditions, result and review date.

Can this magnetic cable assembly be customized?

Yes. Customization can cover geometry, contact layout, materials, cable construction, magnetic structure, sealing and appearance. Feasibility depends on the application and approved specification.

Are the electrical and waterproof values universal?

No. Current, voltage, resistance, temperature rise and ingress-protection claims apply only to the identified model and stated test conditions.

What determines sample and production timing?

Timing is confirmed after the drawing, materials, tooling, sample quantity, validation scope and production requirements have been reviewed.

Information Required Before Cable Development

A reference product image is not enough to define a cable assembly. Confirm the following information before drawing, sampling or quotation review.

1. Pin Map Define power, return, signal, control, detection and unused contacts.
2. Voltage and Current Provide voltage, continuous current, peak current and operating cycle.
3. Cable Length Confirm finished length, tolerance, moving conditions and routing path.
4. Wire Construction Define conductor count, wire requirement, shielding and outer-jacket conditions.
5. Opposite-End Interface Confirm USB, Type-C, DC, terminal, bare wire or custom connection.
6. Mechanical Conditions Provide available space, outlet direction, strain relief and mating requirements.

From Cable Requirements to Project Validation

The exact project route depends on whether an existing product can be used, modified or requires a new cable assembly design.

01

Requirement Review

Confirm product scope, Pin Map, cable length, termination, quantity and application conditions.

02

Cable and Connector Mapping

Match magnetic contacts to conductors, source-side wiring and device-side functions.

03

Drawing and Sample Scope

Confirm dimensions, outlet direction, cable construction and required sample configuration.

04

Validation and Production Review

Review electrical, mechanical and environmental conditions before production approval.

Have a Cable Drawing, Pin Map or Device Requirement?

Submit the magnetic-end structure, electrical functions, cable length, conductor requirements, opposite-end interface, installation space and available drawings for project review.

Submit Magnetic Cable Requirements