Electric Vehicle High-Voltage Cable
King Lai

King Lai Electronics | Professional EV High Voltage Wire Harness Manufacturer | OEM/ODM Custom EV Cable Solutions
King Lai Electronics specializes in EV high-voltage wire harnesses, battery management system (BMS) cables, charging cables, and custom cable assemblies for electric vehicles, energy storage systems, and intelligent mobility applications.
As electric vehicles (EVs), energy storage systems (ESS), and intelligent transportation continue to evolve, the demand for reliable, safe, and high-performance high-voltage cable assemblies has increased dramatically.
King Lai Electronics is a professional manufacturer specializing in:
Electric Vehicle High-Voltage Wire Harnesses
Battery Management System (BMS) Cable Assemblies
EV Charging Cables
High-Speed Data Cables
Automotive Connectors
Customized OEM/ODM Cable Solutions
Our engineering team delivers complete cable assembly services, from design and prototyping to mass production and quality verification.

In electric vehicles, high-voltage systems are responsible for:
| System | Function |
|---|---|
| Battery Pack | Energy storage |
| Battery Management System (BMS) | Battery monitoring and protection |
| Inverter | Converts DC to AC power |
| Electric Motor | Drives vehicle propulsion |
| On-Board Charger (OBC) | Battery charging |
| DC/DC Converter | Voltage conversion |
| Air Conditioning System | High-voltage auxiliary system |
| Charging Interface | External charging connection |
High-voltage wire harnesses serve as the critical pathway for power transmission between these systems. Reliable cable assemblies directly impact vehicle safety, efficiency, and performance.

The bright orange jacket has become the international safety color for EV high-voltage systems. It provides immediate visual identification for technicians and emergency responders.
Typical EV high-voltage systems operate from several hundred volts up to over 1,000V.
High-voltage cables generally support:
AC 1000V
DC 1500V
High current transmission
Low resistance performance
Excellent insulation properties
King Lai high-voltage cable assemblies incorporate:
Copper braided shielding
Aluminum foil shielding
XLPE insulation
Semi-conductive layers
Flame-retardant jackets
These structures significantly reduce:
EMI (Electromagnetic Interference)
RFI (Radio Frequency Interference)
Signal noise
Energy losses (維基百科)
EV cable assemblies must withstand:
| Environmental Condition | Requirement |
|---|---|
| Temperature | -40°C ~ +150°C |
| Salt Spray | Excellent resistance |
| Vibration | Automotive-grade |
| Oil & Chemicals | High resistance |
| Moisture | Waterproof design |
| Mechanical Stress | Abrasion resistant |
EV applications impose extremely demanding environmental requirements on cable systems.
Applications:
Battery Pack
Inverter
Motor Controller
Electric Drive Systems
DC/DC Converter
Charging Systems
Functions:
Cell voltage monitoring
Temperature sensing
Battery balancing
Safety protection
Communication interfaces
Applications:
AC charging systems
DC fast charging systems
Charging stations
Portable charging equipment
Applications:
Temperature sensors
Pressure sensors
Current sensors
Vehicle control modules
Intelligent monitoring systems
King Lai Electronics provides complete one-stop services:
Cable selection
Connector design
Shielding structure design
Electrical analysis
Sample fabrication
Verification testing
Functional evaluation
Automated cutting
Terminal crimping
Injection molding
Cable assembly
Continuity testing
Insulation resistance testing
High-voltage testing
Pull force testing
Environmental testing
Passenger EVs
Commercial EVs
Electric buses
Electric trucks
Battery energy storage
Solar storage systems
UPS systems
Autonomous vehicles
Smart transportation
Connected vehicle platforms
AGV systems
Robotics
Industrial automation
Decades of experience in customized cable assembly manufacturing.
Design, engineering, production, testing, and packaging under one roof.
Every cable assembly undergoes rigorous inspection and testing.
Customized solutions according to customer requirements.
Products designed for international automotive and industrial standards.
King Lai Electronics has extensive experience in cable assembly and connector manufacturing for industrial, medical, communication, and automotive industries.
Our engineering team specializes in:
High-frequency cables
High-voltage harnesses
Connector systems
Automotive cable assemblies
Custom OEM projects
Products are manufactured according to international quality standards and stringent automotive requirements.
We implement strict quality assurance processes from incoming materials through final inspection.
Orange is the globally recognized safety color indicating the presence of high-voltage systems and helping technicians quickly identify hazardous circuits.
Typical EV high-voltage cable systems can support AC 1000V and DC 1500V applications.
Shielding reduces electromagnetic interference and improves system reliability, especially in high-power electric vehicle applications. (維基百科)
Common materials include:
Copper conductors
XLPE insulation
Silicone compounds
Shielded constructions
Flame-retardant jackets
Yes. King Lai Electronics offers complete OEM/ODM services, including design, prototyping, manufacturing, testing, and packaging.
Customized High Voltage Cable Assemblies • Battery Management Systems • EV Charging Solutions • OEM/ODM Manufacturing
Connecting Innovation. Powering the Future of Electric Mobility.



Competitive Price:
Place of Origin: Taiwan
Sales Method: Export, Manufacture, Wholesale, OEM/ODM
Payment Term: T/T
Safety/Quality Approvals: Quality system meets ISO 9002 standard & UL verification