Energy Storage Connectors, Wiring Harness & Busbar Manufacturer
ISO 9001 & IATF 16949 certified manufacturer of high-performance electrical interconnect solutions for energy storage, EV, and industrial applications worldwide.
Powering Your Energy Transition With Reliable Components
As your dedicated B2B partner, we solve the critical electrical interconnect challenges that energy storage system manufacturers face — from sourcing certified connectors to managing complex wiring harness supply chains.
Reduce Supplier Risk
Single-source partner for connectors, harnesses, busbars, and BMS accessories. Fewer vendors, simpler logistics, consistent quality across your entire BOM.
Accelerate Time-to-Market
Rapid prototyping in 7-15 days. Engineering team collaborates directly with your R&D to validate designs before production ramp-up.
Lower Total Cost
Vertically integrated manufacturing eliminates middlemen. Automated production lines deliver consistent quality at competitive pricing — no hidden costs.
Ensure Global Compliance
All products certified to UL, TUV, CE, IATF 16949. Full documentation package including PPAP, FAI, RoHS/REACH declarations for every shipment.
Scenario: You are sourcing connectors for a 5MWh containerized BESS
We provide the complete interconnect BOM: 400A HVIL connectors for rack-to-DC bus, 200A quick-lock connectors for module interconnects, copper busbars for internal power distribution, and pre-tested BMS sampling harnesses — all from one source with unified documentation.
Scenario: You are scaling EV battery pack production
Our flexible laminated busbars handle thermal expansion between modules. Low-profile BT 120A connectors fit tight pack clearances. BMS protection boards with CAN communication integrate directly with your VCU — full PPAP Level 3 documentation included.
Product Categories
Comprehensive electrical interconnect solutions engineered for demanding applications
Energy storage high voltage connectors, waterproof connectors, quick lock connectors, circular connectors, high current connectors, battery connectors, MC4 solar connectors, and industrial connectors. Rated up to 500A, 1500V DC, IP67/IP68 protection.
ESS wiring harness, high voltage harness, battery module wiring harness, BMS sampling harness, copper busbar, flexible copper busbar, laminated busbar, and insulated busbar for battery pack interconnections.
Precision-manufactured copper busbars: rigid copper busbar, flexible copper busbar, laminated busbar, insulated busbar. Nickel/tin/silver plating with CNC machining for battery module and power distribution.
BMS protection board, low voltage BMS, communication BMS, sampling wire, temperature probe, Hall sensors, current sensors, BMS housing, BMS connecting wire, and master-slave control board accessories.
Complete ESS balance of system components: DC fuses, EMS cabinets, battery racks, liquid cooling components, and fire suppression systems for containerized and utility-scale energy storage projects.
Industry Applications
Trusted solutions across the energy and electrification ecosystem
Complete electrical interconnect solutions for utility-scale, commercial & industrial, and residential battery energy storage systems.
Precision interconnect solutions for lithium-ion battery pack assembly meeting automotive-grade quality standards.
Automotive-grade high-voltage connectors and cable assemblies for EVs. IATF 16949 certified with full PPAP documentation.
Reliable power connectors and busbar solutions for DC fast charging stations and charging infrastructure.
Heavy-duty electrical interconnect solutions for industrial automation, power distribution, and renewable energy.
Why Choose PowerConnect
What sets us apart as your trusted manufacturing partner
Over 15 years of expertise in energy storage and EV electrical components manufacturing, trusted by global OEMs and system integrators.
ISO 9001:2015, IATF 16949 certified production lines with full traceability and rigorous quality management systems.
Dedicated engineering team of 40+ specialists developing custom solutions for demanding applications.
Exporting to 30+ countries across North America, Europe, Asia Pacific, and the Middle East with reliable logistics.
Fast turnaround from concept to sample within 7-15 days, accelerating your product development cycle.
Vertically integrated manufacturing with automated production lines delivering cost-effective solutions at scale.
25,000 m² Manufacturing Facility
State-of-the-art manufacturing with automated production and rigorous quality control
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R&D Engineers
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Quality Assurance Process
Five-stage quality management ensuring zero-defect delivery
100% inspection of raw materials including copper purity verification, plating thickness measurement, and polymer material certification review using XRF analyzer and metallographic microscope.
Real-time SPC monitoring at every production station. Critical dimensions verified via CMM and vision measurement systems. Crimp force monitoring on all automated crimping stations.
Each assembly undergoes 100% continuity verification, hipot testing at 1.5x rated voltage, insulation resistance measurement, and contact resistance testing per IEC 60512 standards.
Accelerated life testing including thermal cycling (-40°C to +125°C), salt spray corrosion testing per ISO 9227, and IP ingress protection verification in certified test chambers.
Final visual inspection, dimensional verification, and documentation package generation including test reports, certificate of conformance, and traceability records per lot.
Certifications & Compliance
Internationally recognized certifications for quality, safety, and environmental management
Automotive quality management system certification covering design, development, and manufacturing of electrical connectors and wiring harnesses.
Quality management system certification demonstrating consistent delivery of products and services that meet customer and regulatory requirements.
Environmental management system certification reflecting commitment to sustainable manufacturing.
Safety certification for electrical connectors and wiring devices, recognized across North American markets.
European safety and performance certification for energy storage connectors up to 1500V DC and 500A.
Conformity marking for products sold within the European Economic Area.
Latest Articles
Technical insights and industry expertise from our engineering team
As utility-scale battery energy storage systems transition to 1500V DC architecture, connector technology has evolved to meet higher voltage, current, and safety requirements.
When designing battery pack interconnections, engineers face a choice between rigid busbars and flexible cable harnesses.
Accurate current measurement is fundamental to BMS functionality. We compare Hall effect sensors and shunt resistors.
Ready to Discuss Your Project?
Our engineering team is ready to support your next project. Send us your requirements and we'll provide a detailed quotation within 24 hours.
Frequently Asked Questions
Common questions about our energy storage connectors, wiring harnesses, busbars, and BMS accessories