OEM / ODM Custom Interconnect Solutions
Custom Magnetic Cable Assembly

2 Pin Oval Magnetic Charging Cable for Wearable Devices

A custom 2 pin magnetic charging cable with a compact oval head and recessed two-contact mating face for wearable and other space-constrained charging interfaces. The electrical contacts are assigned according to the approved Pin Map, while voltage, current, cable length, opposite-end termination, working stroke and magnetic retention 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 OVAL MAGNETIC CHARGING CABLE

Engineering Summary

This 2 pin oval magnetic charging cable is a complete cable assembly with a compact molded charging head and a recessed two-contact mating face. The structure can be evaluated for wearable electronics and other devices where the available charging-interface area is limited.

The two electrical contacts are assigned according to the approved Pin Map. Charging is the confirmed function of this product, while voltage, current capability, polarity, cable construction and opposite-end termination are project-specific.

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

Oval Recessed Charging Head

The visible cable head uses an oval or rounded-rectangular form with the electrical contacts positioned inside a recessed mating area.

This geometry can be evaluated when the device requires a compact external charging interface and the surrounding housing provides the mechanical features needed to control final mating position.

Pin Count Two electrical contact positions

Charging Head Compact oval / rounded-rectangular housing

Mating Face Recessed two-contact interface

Primary Function Project-specific charging interface

2-Pin Charging Pin Map and Polarity

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

A two-contact charging interface should not rely on product appearance to determine positive and return connections. The cable-side and device-side drawings should use the same viewing reference so the wiring cannot be mirrored during integration.

Any polarity-control or protection strategy should be defined at the system level rather than inferred from the magnetic structure.

Magnetic Capture and Mechanical Seating

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

Capture force, retention force, separation force and peel force describe different mechanical conditions. The required magnetic behavior should be selected around the device geometry, cable handling and intended release direction.

The recessed mating face should work together with the device-side mechanical geometry to establish final position and seating. Magnetic attraction alone should not determine the operating compression of the electrical contacts.

Working Stroke and Mating Tolerance

The spring-loaded contacts should operate within their approved working stroke after the charging head reaches the intended mechanical seating position.

Working stroke and total travel are different parameters. Working stroke defines the intended operating compression, while total travel represents the available mechanical movement of the spring contact.

Charging-head dimensions, contact height, device-side mating depth, housing tolerance and assembly variation should be reviewed together when defining the normal compression condition.

Pogo contacts should provide electrical connection and controlled compliance rather than serve as the primary mechanical hard stop.

Charging Current and Complete Conductive Path

Charging-current capability cannot be determined from the contact size, two-pin configuration or charging-head dimensions alone.

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

Vdrop = I × Rpath
Ploss = I² × Rpath

Cable length, conductor gauge, termination resistance, pogo contact resistance, mating compression, device-side PCB copper and temperature rise should be evaluated together before a continuous-current rating is released.

Peak current and continuous current should be defined separately where the charging system includes transient or intermittent operating conditions.

Cable Construction and Opposite-End Termination

The oval magnetic charging head is only one part of the complete cable assembly.

Cable length, conductor count, wire gauge, jacket construction, cable flexibility and strain relief should be defined according to the electrical and mechanical requirements of the finished device.

USB-A, USB-C, DC plug, bare wire, terminal or another termination should only be specified after the approved cable drawing confirms the actual configuration.

Product Specifications

SpecificationDetails
Product Type2 Pin Oval Magnetic Charging Cable
Pin Count2 Pin
Primary FunctionCharging
Charging Head ShapeOval / Rounded-Rectangular
Mating FaceRecessed Two-Contact Interface
Contact ArrangementTwo Contacts in Linear Arrangement
Cable-Side InterfaceIntegrated Molded Magnetic Head
Magnetic FunctionCapture + Retention
Final Position / AlignmentControlled by Mechanical Mating Geometry
Pin MapDefined by Approved Drawing
Charging FunctionConfirmed
Data / Signal FunctionTo Be Confirmed
Cable LengthProject-Specific
Opposite-End TerminationTo Be Confirmed
VoltageProject-Specific
Continuous CurrentTo Be Confirmed
Peak CurrentTo Be Confirmed
Current CapabilityValidate Complete Conductive Path
Working StrokeDefined by Approved Drawing
Total TravelTo Be Confirmed
Spring ForceProject-Specific
Magnetic RetentionProject-Specific
Device-Side InterfaceTo Be Confirmed
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 oval magnetic charging cable around the customer’s electrical, mechanical and cable requirements.

  • Two-contact Pin Map and polarity
  • Cable length and wire gauge
  • Continuous and peak charging current
  • Opposite-end termination
  • Charging-head length, width and height
  • Recessed mating-face geometry
  • Working stroke and mating tolerance
  • Magnetic retention and release behavior
  • Cable outlet and strain-relief design
  • Environmental requirements of the finished device

Application Fit

This compact oval magnetic charging cable can be evaluated for devices that require a detachable charging interface with limited external connector space.

  • Smart watches
  • Fitness trackers
  • Wearable electronics
  • Compact portable devices
  • Removable charging accessories
  • Customer-defined compact charging interfaces

Final application suitability depends on the approved Pin Map, electrical load, charging-head dimensions, mating geometry, cable construction and environmental conditions.

Environmental Considerations

Wearable and portable products may encounter moisture, dust, skin oils and frequent handling, but the intended application does not itself establish corrosion resistance or waterproof performance.

Contact material, plating, cable construction, housing geometry and sealing features should be selected for the actual environment and validated under defined test conditions.

An IP rating should only be claimed when the complete mated interface 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 and wire gauge
  • Opposite-end termination
  • Available X / Y / Z space
  • Charging-head dimensions
  • Device-side mating geometry
  • Required working stroke
  • Mating tolerance
  • Magnetic retention and release requirements
  • Environmental conditions
  • 2D / 3D drawings when available
  • Expected project volume

FAQ

What is a 2 pin oval magnetic charging cable?

It is a magnetic charging cable assembly with two electrical contact positions and a compact oval charging head. This design uses a recessed mating face for integration with a project-specific device-side interface.

What are the two contacts used for?

The electrical function and polarity of both contacts are defined by the approved Pin Map. Charging is the confirmed application, but the exact positive and return allocation should be shown on the drawing.

What charging current can this 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.

Why use a recessed oval charging head?

A compact recessed mating face can be evaluated where the device has limited external connector space and the housing geometry is designed to control the final mating position.

What does the magnetic structure control?

Magnets primarily assist capture and retention. Final alignment, position and seating should be controlled by the mechanical mating geometry.

What is the working stroke of the pogo contacts?

Working stroke is defined by the approved drawing and represents the intended operating compression. It should be distinguished from total mechanical travel.

Does this 2 pin cable support data transfer?

Data transfer should not be assumed from the two-contact interface. Any signal function or protocol must be defined and validated through the complete electrical architecture.

Can cable length and the 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?

No IP rating should be assumed from the recessed head or magnetic interface. Environmental protection depends on the complete mating assembly and device sealing design.

What information is needed for a custom version?

Provide the Pin Map, polarity, voltage, continuous and peak current, cable length, opposite-end termination, charging-head dimensions, working stroke, mating tolerance, magnetic requirements and available 2D or 3D drawings.

CUSTOM OVAL MAGNETIC CHARGING CABLE DEVELOPMENT

Request an Engineering Review

Send CTP your 2-pin Pin Map, polarity, voltage, continuous and peak current, cable length, wire gauge, opposite-end termination, charging-head dimensions, 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 Oval 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