Custom 4-Pin Magnetic Charging Cables

Magtor develops four-contact magnetic cables for OEM charging, power and optional signals. The circuit and interface requirements determine what each contact does; there is no fixed four-contact assignment.

Custom development: choose pitch, cable direction and termination.
3A / Pin: available on the applicable listed configurations.
10,000+ Cycles: intended for repeated magnetic docking.

ISO 9001ISO 14001QC 080000

Power-bank magnetic interfaces and cable samples

4 Pin Magnetic Cable Options

Select the wiring and connector arrangement around the enclosure and internal PCB. Custom development can address a configuration that is not covered by the standard options.

Four-contact USB-C magnetic cable with two same-face end magnets and a matching four-pad plate.

4 Pin Magnetic Charging Cable

Pitch 2.50mm
Current Rating 2A / Pin
Life test 10000+
Magnets N52 NdFeB

Four-contact USB-A magnetic cable with two silver end magnets and a separate four-pad device plate.

4 Pin Magnetic Cable 180° / 90°

Pitch 2.00mm
Current Rating 3A / Pin
Life test 10000+
Cable Outlet 180° / 90°

Four-contact rectangular magnetic wire connector pair with four-color wires and single-row four-position harness plugs.

4 Pin Magnetic Cable Bare Wire

Pitch 2.00mm
Current Rating 3A / Pin
Life test 10000+
End Type Custom

Four-contact square magnetic charging cable and separate device receptacle.

Square 4 Pin Magnetic Charging Cable

Pitch 1.30mm
Current Rating 2A / Pin
Life test 10000+
Magnets N52 NdFeB

90° vs 180° Magnetic Connector Cable

A battery, PCB or housing wall behind the charging port can make a 90° side outlet useful. If the rear area is open, a 180° outlet provides a straightforward cable path.

Item	90° Cable	180° Cable
Cable direction	Side / angled	Straight back
Rear clearance	Lower requirement	More space required
Cable routing	Side routing	Straight routing
Typical design	Thin housing / dock	Open rear space
Selection basis	Housing + PCB layout	Direct cable path

Scroll horizontally to view every column.

Four-contact magnetic cable routing comparison with USB-C and USB-A plugs, matching receivers and complete cable coils.

Six-contact oval connectors and cables, compact square contact modules and generic earbud, watch and custom-device application examples.

Square 4 Pin Magnetic Cable Connector

A square head can fit a specific enclosure opening and define the mating orientation. Its footprint and geometry guide the alignment of the male and female parts.

Send the opening dimensions, housing thickness, available mating area and intended outlet direction from the device drawing to review a square configuration.

Four-contact magnetic connector pairs, original exploded parts and a complete USB-A cable.

Custom 4 Pin Magnetic Charging Cable for Your Device

An existing PCBA position, housing thickness, charging port and exterior design may leave a standard cable with the wrong pitch, inadequate clearance or incorrect polarity.

Magtor can adapt dimensions, contact assignments, cable length, conductor specification, polarity, magnetic force and outlet direction to the confirmed device requirements.

What Is a 4 Pin Magnetic Charging Cable?

Magnets align the cable with the device-side connector. Four pogo pin contacts then create the electrical paths as the parts meet.

Four describes contact count, rather than a fixed USB pinout. Define power, ground and other signals according to the project circuit.

Explore all Magnetic Cable Connectors

Small oval connector under visual inspection.

Four-contact mounting connectors with separate red, white, green and black wires and PIN 1 to PIN 4 labels.

How Should the 4 Pins Be Assigned?

The approved contact map and device circuit determine whether the cable serves charging alone or power and signals together. The two examples below are design approaches, rather than assignments shared by every Magtor model.

Charging-Focused Layout

V+ (Power)
GND (Ground)
ID / Detection
Control / Reserved

Power + Signal Layout

Power
Ground
Signal 1
Signal 2

Interface Compatibility Checklist:

Connector geometryPin pitch & positionElectrical/Magnetic polarityWorking height

Choose the Cable End for Your Device

Choose a cable termination that matches the power source or internal harness.

USB-A

For common USB power supplies and charging accessories.

USB-C

A USB-C end can serve a modern power input. USB PD or fast charging also requires the appropriate circuit and wiring.

Open Wire / Terminal

For PCB leads, internal harnesses, docks and industrial integration.

Custom Connector

Use a specified connector to match an existing proprietary harness.

USB-A, USB-C and original terminal connector options, including a four-position header.

What Should You Confirm Before Ordering?

Supply these details so the cable assembly can be reviewed against the hardware design.

Parameter	Why It Matters	What to Provide
Pin assignment	Define the power and signal routes.	Circuit diagram / definition
Voltage / Current	Select contact size and conductor gauge.	Confirm based on project specification
Pin pitch	Match the device-side contact positions.	Distance between pin centers
Electrical polarity	Check the electrical polarity to address short-circuit risks.	Positive/Negative layout
Cable outlet (90°/180°)	Review space around the cable outlet.	Housing constraints
Cable length & OD	Plan the cable path and permitted voltage drop.	Required dimensions (mm)

Scroll horizontally to view every column.

Optical vision measuring instrument and sample stage.

Applications for 4 Pin Magnetic Charging Cables

Four-pad hearing device charging interface with front, back, sleeve and adapter views.

Smart Wearables

Magnetic guidance supports docking without visual alignment at a defined position. Square heads or open-wire ends are options for review.

Patient and clinical monitoring equipment; application concept.

Medical Electronics

Develop a connection for frequent use, practical external-cable replacement and cleaning of the interface.

Four-contact power bank, original magnetic cable head and two mating counterparts on a pale stone surface.

Consumer Applications

A rapid-release interface can support repeated connection. Tens-of-thousands cycle capability must be confirmed for the model; the listed card specification remains 10000+.

Handheld Devices

A handheld accessory may need frequent charging together with signals or ID detection.

Black electronics housing tray with its original four-contact magnetic connector.

Control Panel

A control-panel interface can use rear sealing and connections to a data cable or dock where the engineering requirements call for them.

Four-contact magnetic interfaces and a blue device housing.

Industrial Electronics

Industrial panels may need power and signals together with a defined internal cable route.

4 Pin vs 2 Pin Magnetic Charging Cable

Select two or four contacts according to the device circuit and the electrical functions required.

2 Pin Magnetic Cable

Two contacts suit basic positive/negative charging in a small interface. View the 2-Pin Options for related configurations.

View 2 Pin Options

4 Pin Magnetic Cable

Four contacts allow charging alongside additional signals, ID detection or status/control functions, depending on the chosen circuit.

Original four-contact and two-contact USB-A magnetic cable configurations.

Laboratory operators checking connector samples.

How Are 4 Pin Magnetic Cables Checked?

Magtor checks critical parameters to carry an approved sample design into production. Inspection covers conductor sequence, polarity, cable length and mating position for consistent assemblies.

Contact resistance
Spring force
Magnetic force
Cable continuity
Open / short test
Mating-cycle test
Dimensional measurement
Plating inspection

Why Develop a Custom Cable with Magtor?

Our 17 years of factory experience support precision design and connection development for OEM integration.

17Years of Manufacturing

Custom Solution Development

ISO9001 / 14001

Prototyping & Mold Making

About Magtor Contact Engineering Team

Manufacturing Capability

17 Years of Connector Manufacturing

From design to mass production,

Magtor develops reliable magnetic connection solutions,with precision engineering and manufacturing quality checks throughout the process.

Automated connector production stations.

Dedicated Connector Factory

A workforce of 185 includes 12 R&D staff at our 12000-square-meter factory. This professional team supports customers with technical and manufacturing services.

Production inspection equipment and operator bench.

Production Equipment and Technical Expertise

Our technical team works with advanced production equipment to maintain consistent connector output and performance.

Incoming dimensional inspection station.

Inspection and Testing

Connector checks include lifespan, film thickness, elastic resistance, RoHS compliance and CCD inspection, using advanced test equipment.

Manufacturing and tooling workflow illustration; schematic process overview.

Engineering Support Customers Can Rely On

More than a dozen technical engineers review connector proposals carefully against the requirements of each application.

Automatic turning equipment in a production workshop.

Automated Production

17 years of manufacturing experience support concept development through mass production, with technical guidance and prompt project responses.

Supporting More Than 500 Enterprises Worldwide

Management Systems and Certificate Documents

New company certificate document pending; preview card, not a certificate.

ISO 9001

ISO 14001

QC080000

Frequently Asked Questions

What are the four pins used for on a magnetic charging cable?

Four contacts can be assigned to power, ground and device-specific signals. The circuit may use them for charging with ID detection or for power and data together.

Does every 4 pin magnetic charging cable support data?

No. Contact count does not establish USB data support. The assigned wiring and device-side circuit determine the actual function.

How do I know if a 4 pin magnetic charger is compatible with my device?

Compare geometry, contact pitch, electrical polarity, magnetic polarity and working height with the device-side drawing before approving compatibility.

Should I choose a 90° or 180° magnetic cable?

Choose a 90° outlet for limited rear clearance and side routing. A 180° outlet suits an open area directly behind the interface.

Can the cable length and wire gauge be customized?

Cable length, AWG conductor size, outer diameter and jacket material can be selected for the voltage, current and routing requirements.

Can a 4 pin magnetic cable use USB-C?

USB-C can be the cable end. USB PD capability still depends on the specified circuit; a USB-C plug alone does not enable it.

Can Magtor match a cable from a sample or drawing?

We can review 2D/3D drawings or a physical sample to develop a compatible custom assembly.

What information is required before developing a custom 4 pin cable?

Provide head dimensions, contact assignments, voltage and current, 90° or 180° outlet direction, cable length, USB or open-wire ends and the application.

CONNECT WITH ENGINEERING

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Share your project with our engineering team. Our 17 years of manufacturing experience support precision design and prototyping around the needs of your company.

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