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Our core range of flexible braided copper wire products — precision-manufactured for automotive battery cable applications demanding superior conductivity, flexibility, and long-term durability.
In an era where automotive electrical systems are growing exponentially in complexity and power demand — from conventional ICE vehicles to hybrid and full-electric platforms — flexible braided copper wire has become the indispensable conductor of choice. Its unique combination of ultra-high conductivity, mechanical flexibility, vibration fatigue resistance, and thermal stability makes it the gold standard for automotive battery cable construction worldwide.
Flexible braided copper wire is manufactured by interlacing multiple fine copper strands — often tinned for enhanced corrosion resistance — into a tightly woven, highly flexible conductor. Unlike solid or simple stranded wire, the braided architecture dramatically increases the surface contact area, distributes mechanical stress across hundreds of individual filaments, and allows the cable to flex repeatedly without fatigue cracking. For automotive battery cables, this translates directly into longer service life, lower resistance, and reliable performance under the harsh vibration, heat, and chemical exposure conditions found in engine bays and battery enclosures.
Composed of dozens to hundreds of fine copper filaments (typically 0.05mm–0.3mm diameter), braided together to form a conductor with exceptional flexibility and current-carrying capacity far exceeding single-strand alternatives.
Manufactured from electrolytic tough-pitch (ETP) or oxygen-free copper with purity ≥99.95%, ensuring minimum electrical resistivity and maximum conductivity — critical for high-current automotive battery cable applications.
Electrolytic tin plating on individual strands before braiding provides superior oxidation resistance, extended service life in humid or corrosive under-hood environments, and improved solderability for terminal connections.
Rated for continuous operation from -40°C to +180°C (depending on insulation system), making flexible braided copper wire suitable for both Arctic cold-start conditions and extreme under-hood thermal environments.
The braided construction distributes mechanical stress across all strands simultaneously, enabling millions of flex cycles without conductor fatigue — essential for battery cables subject to constant engine and road vibration.
Available in cross-sections from 4mm² to 240mm² and in custom cut lengths with crimped or welded terminals, enabling precise fit for OEM and aftermarket automotive battery cable assemblies.
The global automotive wiring harness and battery cable market is experiencing unprecedented growth, driven by the accelerating electrification of transportation. Flexible braided copper wire sits at the center of this transformation.
The automotive industry is undergoing its most profound transformation in a century. These structural shifts are creating powerful, sustained demand for high-performance flexible braided copper wire across every vehicle segment.
Battery electric vehicles (BEVs) require 3–5× more copper wiring than conventional ICE vehicles. Each EV battery pack demands large-section flexible braided copper cables capable of handling 400V–800V DC bus voltages and peak currents exceeding 500A during fast charging. The global EV fleet is projected to surpass 300 million units by 2030, creating an enormous structural demand surge for automotive-grade braided copper wire.
Next-generation 800V charging platforms (adopted by Porsche, Hyundai, Kia, and increasingly by Chinese OEMs) require ultra-low-resistance, high-current battery cables that can sustain 350kW+ charging rates without excessive heat generation. Flexible braided copper wire with precision cross-sections and tinned surfaces is the only conductor technology that reliably meets these demanding specifications at scale.
Advanced battery architectures that eliminate traditional module housings require flexible inter-cell and inter-module busbars made from braided copper. The need for short, flexible, vibration-tolerant connections between cells and structural battery enclosures is driving innovation in ultra-thin braided copper tape and flat wire formats.
Automotive OEMs are under relentless pressure to reduce vehicle weight and optimize packaging. Flexible braided copper wire enables thinner, lighter battery cable assemblies compared to rigid busbars, while still delivering equivalent current capacity — a critical advantage in tightly packaged EV battery enclosures and hybrid drivetrains.
Modern EV battery thermal management systems require flexible electrical connections that can accommodate thermal expansion and contraction cycles across wide temperature ranges. Braided copper wire's inherent flexibility and fatigue resistance make it uniquely suited to these thermally dynamic environments, outperforming rigid conductor alternatives.
Post-pandemic supply chain disruptions have accelerated OEM and Tier-1 supplier strategies to diversify sourcing. Chinese manufacturers like Zhejiang Xingma — with ISO9001-certified production, 2,000+ ton annual capacity, and direct export capabilities — are increasingly preferred as reliable, cost-competitive partners for global automotive battery cable supply chains.
From passenger EVs to heavy commercial vehicles, flexible braided copper wire is the critical conductor enabling reliable, high-performance battery cable connections across the full spectrum of automotive and industrial applications.
Understanding where and how flexible braided copper wire is deployed within automotive battery cable assemblies reveals why its unique properties are so critical to system performance, safety, and longevity.
The highest-current cables in any EV drivetrain — connecting the high-voltage battery pack to the main inverter — must carry sustained currents of 200A–600A at 400V–800V DC. Flexible braided copper wire in 70mm²–240mm² cross-sections, with tinned strands and halogen-free insulation, is the standard solution for this safety-critical application.
Ultra-rapid DC charging (150kW–350kW) demands battery cables with the lowest possible resistance to minimize heat generation during the charging event. Flexible braided copper cables with cross-sections up to 120mm² and precision-crimped terminals are engineered specifically for CCS, CHAdeMO, and GB/T fast-charge inlet assemblies.
Within the battery pack, flexible braided copper tape (flat wire format) provides the compliant electrical connections between prismatic or cylindrical cells and module busbars. The flexibility accommodates cell swelling during charge/discharge cycles and thermal expansion, preventing mechanical stress on cell terminals — a key factor in battery longevity.
Electric buses and commercial trucks with battery packs of 100kWh–600kWh require heavy-duty flexible braided copper cables capable of withstanding the severe vibration, temperature extremes, and high-cycle-count demands of commercial vehicle operation. Custom-engineered braided copper assemblies with reinforced insulation and sealed connectors are the preferred solution.
Even in conventional internal combustion engine vehicles, the battery-to-starter and battery-to-alternator cables must handle high inrush currents (up to 800A during cold cranking) and continuous charging currents. Flexible braided copper wire provides the superior current capacity and vibration tolerance required for reliable ICE vehicle electrical system performance.
Racing and high-performance automotive applications demand lightweight, ultra-flexible battery cables that can withstand extreme vibration and temperature cycling. Ultra-fine braided copper wire (0.05mm strand diameter) in compact cross-sections delivers the optimal balance of weight, flexibility, and current capacity for motorsport battery cable assemblies.
Zhejiang Xingma Copper Industry Co., Ltd. has built a reputation as a trusted, ISO-certified manufacturer of flexible braided copper wire for automotive battery cable applications — combining advanced manufacturing capability with rigorous quality control and responsive customer service.
State-of-the-art manufacturing facility with 300+ specialized machines including wire drawing, braiding, annealing, and cutting equipment for comprehensive in-house production.
Dual certification in quality management and environmental management systems, ensuring consistent product quality and responsible manufacturing practices for global automotive supply chains.
All braided copper wire products use only the highest-grade electrolytic copper, guaranteeing maximum conductivity and long-term reliability in demanding automotive battery cable applications.
Full OEM customization capability: custom cross-sections, strand counts (8/12 spindles), lengths, terminal types, and insulation materials tailored precisely to your automotive battery cable specification.
Established import/export operations with experience serving automotive and industrial customers across North America, Europe, Southeast Asia, and the Middle East from our Liushi, Zhejiang base.
Scalable production capacity ensures reliable supply for both prototype development and high-volume serial production of automotive battery cable assemblies.
In-house microscope hardness testing, conductivity verification, and dimensional inspection on every production batch — backed by full material traceability documentation.
Member of Zhejiang Cable Accessories Industry Association and China Forging Association, demonstrating commitment to industry standards and continuous technical development.
5 Years of Experience · Est. 2019 · Liushi, Zhejiang, China
Zhejiang Xingma Co., Ltd. was established in 2019 and is located in Liushi, the capital of electrical appliances in China. It is an enterprise mainly engaged in metal products, wire and cable processing and sales; import and export of goods and technology. The company revolves around the construction of a modern enterprise mechanism and mass production of mechanical automation.
The leading products include copper wire, copper braided wire, copper stranded wire, soft copper stranded wire, brush wire, carbon brush wire, soft connection series products, metal stamping parts and other products — best-selling at home and abroad, deeply trusted and welcomed by customers.
Zhejiang Xingma Copper Industry Co., Ltd. has a factory building with a construction area of more than 10,000 square meters and more than 100 employees. It has more than 300 domestic top-level manufacturing machines including: dingtian wire drawing machine, fuchuan beam machine, pipe twisting machine, braiding machine, annealing furnace, middle drawing machine, automatic cutting machine, welding machine, air dryer, microscope hardness tester, automatic punching machine, 160-ton punching machine, wire dividing machine, flattening machine, large polishing machine, stamping parts cleaning machine, bench drill, packing machine, etc. — with an annual production capacity of more than 2,000 tons.
The company abides by the Universal Declaration of Human Rights and major United Nations conventions, respects human and labor rights, opposes discrimination and harassment. Relying on the manufacturing industry and taking scientific and technological innovation as the concept, we vigorously expand related industries and gradually develop and expand.
Our Liushi production facility operates 24/7 with a fully integrated manufacturing flow — from raw copper rod drawing through fine wire stranding, braiding, annealing, cutting, and terminal assembly. Every batch of flexible braided copper wire for automotive battery cable applications undergoes dimensional, conductivity, and mechanical testing before shipment.
Beyond our flagship automotive battery cable wire products, Xingma offers a comprehensive portfolio of copper wire and braided conductor solutions for every automotive and industrial electrical application.
