Custom DC Power Cable Assembly Manufacturer

OEM custom DC power cable assemblies with DC barrel plugs, DC sockets, XT30, XT60, XT90, fused power cables, panel-mount DC cables, Y-splitter cables, custom wire gauge, polarity marking and electrical testing for low-voltage power systems and OEM devices.

Yihetai manufactures custom DC power cable assemblies for power adapters, LED lighting, battery-powered devices, solar equipment, CCTV systems, routers, smart devices, industrial control equipment, medical devices, test instruments and OEM electronic products.

Whether you need a DC barrel plug cable, DC jack extension cable, DC plug to open wire cable, XT60 power cable, XT90 battery cable, fused DC power cable, DC Y-splitter cable, panel-mount DC socket cable or custom low-voltage power harness, Yihetai can support prototype samples and mass production.

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What Is DC Power Cable Assembly?

DC power cable assembly is a customized cable or wire assembly used for transmitting direct current (DC) power safely and efficiently from sources to devices. It combines power wires with polarity-specific connectors to handle voltages from 5V to 48V and currents up to 100A. It usually includes a DC plug, DC socket, bare wire end, terminal, molded connector, or other customized interface combined with suitable conductors and insulation materials. Depending on the application, it can be designed for power input, extension, split power distribution, panel mounting, or connection between internal modules.

Compared with standard off-the-shelf cables, custom DC power cable assemblies can better match the equipment structure, current requirement, plug specification, environmental condition, and installation route. This improves assembly efficiency, reduces connection errors, and helps ensure stable electrical performance in the final product.

DC Power Cable vs Standard DC Plug Cable

A standard DC plug cable may be enough for simple adapter extension, but OEM power systems often require more control over current, voltage, connector size, polarity and protection.

Cable TypeMain FocusTypical Use
Standard DC Plug CableSimple power connectionPower adapter extension or replacement cable
Custom DC Power Cable AssemblyVoltage, current, polarity, wire gauge, connector and protection designOEM devices, power modules, LED systems, battery-powered equipment
High-Current DC CableLarger conductor and power connectorBattery packs, RC devices, energy storage and industrial power
Fused DC Power CableOvercurrent protectionAutomotive, battery, solar and power distribution applications
Panel-Mount DC CableDevice enclosure installationControl boxes, instruments, kiosks and equipment panels

Yihetai does not only supply standard DC extension cables. We help customers confirm the correct connector type, wire gauge, cable length, polarity, fuse protection and testing requirement according to the actual device and power system.

DC Current, Wire Gauge & Voltage Drop Considerations

For DC power cable assemblies, wire gauge selection is important because current load, cable length and voltage drop directly affect power delivery. A cable that is too thin may cause voltage drop, heat generation or unstable device operation.

Yihetai can help review wire gauge based on your working current, voltage, cable length, connector type and installation environment.

Selection FactorWhy It Matters
Working CurrentHigher current usually requires larger conductor size
Cable LengthLonger cables may increase voltage drop
System VoltageLow-voltage DC systems are more sensitive to voltage loss
Connector RatingThe connector must match the current and mating interface
Wire GaugeWire size affects heat generation and power transmission
Cable JacketDifferent environments may require PVC, silicone, TPE or other materials
Installation SpaceLarger wires need more bending space and routing clearance
Safety RequirementFuse protection, polarity marking and insulation may be required

DC Connector & Power Interface Options

Different DC power systems require different connectors. Yihetai can support standard DC barrel connectors, high-current connectors, panel-mount sockets and mixed-end cable structures.

Connector OptionCommon Use
DC Barrel Plug CablePower adapter, router, LED, CCTV and electronic device connection
DC Female Socket CableExtension cable, device input or power interface connection
DC Male to Female Extension CableExtends the distance between adapter and device
DC Plug to Open Wire CableInternal wiring, PCB connection or customized installation
DC Plug to Terminal CableEquipment wiring, control boards and power modules
DC Plug to Ring Terminal CableBattery, grounding or power supply connection
XT30 Power CableSmall battery-powered devices and compact power systems
XT60 Power CableMedium-current battery and DC power applications
XT90 Power CableHigher-current battery and power equipment applications
Anderson-Type DC CableModular power connection and quick disconnect applications
Panel-Mount DC Socket CableEquipment panels, enclosures and control boxes
Waterproof DC Connector CableOutdoor or moisture-exposed power applications

 

DC Connector Current Rating & Matching Guide

DC connector selection should not be based only on appearance. The connector must match the working current, mating connector, cable size, plugging frequency and installation environment.

Connector TypeDesign Consideration
5.5 × 2.1mm DC PlugCommon low-voltage power connector; current requirement should be confirmed
5.5 × 2.5mm DC PlugSimilar appearance to 5.5 × 2.1mm, mating size must be checked
3.5 × 1.35mm DC PlugCompact devices and small power equipment
Type-C Power CableUsed for selected power input or charging-related applications
XT30 ConnectorCompact power connection
XT60 ConnectorBattery and medium-current power connection
XT90 ConnectorHigher-current battery or power applications
Terminal Block EndIndustrial wiring and equipment installation
Ring Terminal EndPower supply, battery and grounding connection
Panel-Mount ConnectorExternal device power input or enclosure installation

Before production, we recommend confirming the mating connector size, current requirement and polarity definition to avoid connector mismatch or power failure.

DC Polarity & Wiring Identification

Polarity is one of the most important requirements for DC power cable assemblies. A wrong polarity connection may cause device malfunction or damage.

Yihetai can customize polarity marking, wire color, labels and electrical testing according to your project requirement.

Polarity ItemAvailable Options
Common PolarityCenter positive or center negative
Wire ColorRed for positive, black for negative or custom color
Cable LabelPositive / negative label, part number label, warning label
Heat Shrink MarkingColor marking for polarity or circuit identification
Connector MarkingMolded mark, printed mark or customer label
TestingPolarity check, continuity test and short/open test

For DC barrel plug cables, please confirm whether your device uses center positive or center negative wiring before quotation.

Fuse Protection & Power Safety Options

Some DC power cable assemblies require fuse protection to reduce overcurrent risk and improve system safety. Yihetai can customize fused DC power cables according to current, voltage, application and installation environment.

Protection OptionPurpose
Inline Fuse HolderAdds overcurrent protection to the DC power line
Blade Fuse HolderCommon for automotive and low-voltage DC power systems
Waterproof Fuse HolderUsed when moisture protection is required
Replaceable Fuse DesignAllows easier maintenance and replacement
Heat Shrink ProtectionAdds insulation and strain relief
Protective SleeveHelps reduce abrasion and organize cable routing
Polarity LabelReduces wiring mistakes during installation
Warning LabelIdentifies voltage, polarity or safety information

Fuse type and rating should be confirmed according to customer drawings, system current and safety requirements.

DC Power Cable Assembly Structures We Manufacture

Yihetai can manufacture simple DC extension cables as well as complex DC power harnesses with branches, fuse holders, panel connectors and mixed-end structures.

  • DC Male to Female Extension Cable
  • DC Plug to Open Wire Cable
  • DC Plug to Terminal Cable
  • DC Plug to Ring Terminal Cable
  • DC Plug to JST / Molex Cable
  • DC Y-Splitter Cable
  • Fused DC Power Cable
  • Panel-Mount DC Socket Cable
  • XT60 / XT90 Power Cable
  • Waterproof DC Power Cable
  • Custom DC Power Harness

Cable Jacket, Protection & Installation Options

DC power cable assemblies may be used inside equipment, outdoors, near moving parts or in tight installation spaces. Yihetai can customize cable protection according to your application.

Protection OptionPurpose
PVC JacketGeneral-purpose insulation and protection
Silicone WireFlexible cable for selected temperature or bending requirements
TPE / TPU JacketFlexible and durable jacket options depending on project
Heat Shrink TubeInsulation, strain relief and clean appearance
Dual-Wall Heat ShrinkBetter sealing and moisture protection when required
Corrugated ConduitMechanical protection and routing support
Braided SleeveAbrasion protection and organized cable routing
Rubber BootProtects connector or terminal area
Cable Tie / ClipHelps fix cable routing inside equipment
Label / BarcodeSupports assembly identification and traceability

Key Features of Our Custom DC Power Cable Assemblies

  1. Custom DC barrel plug, DC socket, XT30, XT60, XT90 and panel-mount connector options
  2. Custom wire gauge, cable length, polarity and branch structure
  3. DC male to female, DC to open wire, DC to terminal, DC to ring terminal and DC Y-splitter structures
  4. Fused DC power cable and overcurrent protection options
  5. Red / black polarity marking, labels and heat shrink identification
  6. PVC, silicone, TPE, TPU and custom cable jacket options
  7. Overmolded strain relief, right-angle connector and panel-mount design available
  8. Suitable for low-voltage power systems, LED lighting, CCTV, smart devices and OEM equipment
  9. Prototype samples and mass production supported
  10. Continuity, polarity, short/open and visual inspection before shipment

Technical Specifications

ParameterOptions
Product NameCustom DC Power Cable Assembly
Connector TypeDC barrel plug, DC socket, XT30, XT60, XT90, panel-mount connector, terminal, ring lug
DC Plug Size5.5×2.1mm, 5.5×2.5mm, 3.5×1.35mm, 4.0×1.7mm or custom
Cable FunctionDC power transmission, extension, distribution, battery connection or equipment power input
Voltage RangeCustomized according to customer requirement and cable specification
Current RequirementReviewed according to wire gauge, connector type and application
Wire GaugeCustomized according to current, cable length and voltage drop requirement
Cable LengthFully customized
PolarityCenter positive, center negative, red/black wire or custom polarity definition
Branch Structure1-to-1, 1-to-2, 1-to-3, Y-splitter, multi-branch or custom
Fuse OptionInline fuse holder, blade fuse holder, waterproof fuse holder or custom
Cable JacketPVC, silicone, TPE, TPU or customer-specified material
ProtectionHeat shrink, conduit, braided sleeve, rubber boot, label or custom protection
End StructureConnector to connector, connector to open wire, connector to terminal, connector to ring lug
ProcessCutting, stripping, crimping, soldering, overmolding, labeling, testing
TestingContinuity, polarity, short/open, visual inspection and optional electrical testing
OEM/ODMSupported
Production BasisDrawing, sample, wiring diagram, BOM list, connector datasheet or application requirement

Send us your drawing, sample or specification for a fast quotation.

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Typical Applications

Custom DC power cable assemblies are widely used in low-voltage power systems and OEM electronic devices where stable power transmission and correct connector matching are required.

LED Lighting Systems

DC power cables for LED strips, LED drivers, lighting modules and low-voltage lighting equipment.

CCTV & Security Cameras

DC barrel plug cables, extension cables and splitter cables for cameras, DVR/NVR systems and monitoring devices.

Power Adapters & Chargers

Custom DC output cables for adapters, chargers, power supplies and external device power input.

Battery-Powered Devices

XT60, XT90, ring terminal and fused DC cables for battery packs, portable power and backup power systems.

Smart Home & IoT Devices

Compact DC power cables for routers, gateways, sensors, smart devices and connected electronics.

Industrial Control Equipment

Panel-mount DC cables, terminal cables and power harnesses for control boxes and industrial devices.

Solar & Renewable Energy Equipment

DC power cables for small solar devices, controllers, battery charging and power distribution.

Medical & Test Instruments

Custom DC power cables for diagnostic devices, test equipment, laboratory instruments and OEM electronics.

DC Power Cable Assembly Quality Control

For DC power cable assemblies, correct polarity, stable crimping or soldering, suitable wire gauge and final electrical testing are important for reliable power transmission.

Yihetai controls DC power cable quality through material verification, connector matching, wire preparation, crimping or soldering inspection, polarity testing, continuity testing and final visual inspection.

  • Connector Type Check
  • Wire Gauge Verification
  • Cable Length Inspection
  • Polarity Check
  • Crimping / Soldering Inspection
  • Fuse Holder Check
  • Continuity Test
  • Short / Open Test
  • Label and Marking Check
  • Final Visual Inspection

Additional tests such as pull force, insulation resistance, hi-pot or functional testing can be arranged according to customer drawings and agreed inspection standards.

Why Choose Yihetai?

  • Experienced custom cable assembly and wire harness manufacturer
  • Support for DC barrel plug cables, XT60 / XT90 power cables, fused DC cables and panel-mount DC cable projects
  • Custom voltage, current, wire gauge, cable length, polarity and branch structure
  • OEM and ODM support based on drawings, samples or application requirements
  • Flexible support for prototype samples and mass production
  • Electrical testing and visual inspection before shipment
  • Suitable for low-voltage power systems, LED lighting, CCTV, smart devices and OEM equipment

Frequently Asked Questions

Wire gauge depends on current, length, and allowable voltage drop (typically <3%). For 12V/10A over 2m, use AWG 14; For 48V/50A solar, AWG 6 we calculate precisely using NEC ampacity tables and your specs, factoring insulation temp rating (90°C+). Provide voltage/current/length for free recommendation and prototype. Silicone wires handle heat better for compact installs.

Yes, we build up to 200A with thick AWG 4/2/0 or parallel conductors, using Anderson SBS50+ or lugs. Rated for continuous duty at 60°C rise, with thermal imaging verification. Ideal for EV chargers, inverters. Vibration-proof crimps and XLPE insulation ensure longevity. UL1015 compliant; send power budget for optimized design.

Samples/prototypes: 5-7 days, no MOQ request; Production: 3-4 weeks for 1k+ pcs, scalable to millions. Tiered pricing drops 20% at volume. We stock common connectors for speed ERP tracks orders.

Definitely, IP67/IP68 with molded glands, potting, or heat-shrink. Silicone/PU jackets for submersion up to 1m. Perfect for marine solar, outdoor LEDs. We test submersion and pressure; compatible with PG/M glands. Specify ingress level for matching.

Comprehensive: Hi-Pot (2kV), insulation resistance (>100MΩ), crimp pull (per IPC-620), continuity (<0.1Ω/m), voltage drop at rated load/heat cycle. Optional salt spray, thermal shock. Full reports with traceability. Ensures zero failures in field for critical apps like medical/solar.

Both are common DC barrel connector sizes. The outer diameter is usually 5.5mm, while the inner pin size is different. The correct size must match the mating DC jack of the device.

How to Specify Your Custom DC Power Cable Assembly

Not sure which DC power cable structure you need? Send us your device interface photo, existing cable sample, voltage, current, cable length and connector requirement. Our team can help confirm the suitable connector, wire gauge, polarity and cable assembly structure.

Send Drawing or Sample

Custom Wire Harness & Cable Assembly Manufacturer

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