Premium Pure Copper Battery Connector Strip – High Current Capacity
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Product Description Supplement – Pure Copper Battery Connector Strip
Crafted from high-purity 99.9%+ C110 copper, this battery connector strip delivers exceptional electrical conductivity and minimal resistance, ensuring efficient power transfer with reduced heat buildup even under heavy loads.
Manufacturing Process
● Raw material: First-grade electrolytic cathode copper or premium brass ingot strictly controlled for harmful impurities (S, P, Bi, Pb, etc.).
● Large-tonnage extrusion followed by multi-pass cold drawing to achieve refined grain structure and fully dense microstructure without lamination or cracks.
● Precision CNC machining: hole position tolerance ±0.05 mm, flatness ≤ 0.03 mm/m, surface roughness Ra ≤ 1.6 μm.
● Plating options: High-quality silver plating (Ag 8–15 μm) or tin plating (Sn 10–20 μm), meeting GB/T 5270 Class 1 adhesion requirements; salt-spray test ≥ 1000 h without red rust or white spots.
● Full traceability: Each busbar is delivered with material certificate, plating thickness report, dimensional inspection report, and unique QR code for complete production history tracking.
Quality Control
● 100% electrical conductivity test (≥ 98% IACS), 100% dimensional inspection, 100% eddy-current plating thickness verification.
● Third-party test reports (SGS/CTI) available with each batch upon request.
● Temperature-rise test: ≤ 45 K at 1.2× rated current for 4 hours per IEC 61439.
● Short-time withstand current test: Verified for 50 kA/1s, 65 kA/1s, 100 kA/1s and higher levels.
● Strict adherence to IATF 16949 quality management system; all critical processes under SPC with Cpk ≥ 1.67.
Widely applied in utility-scale substations, data centers, rail transit systems, industrial plants, and large wind/photovoltaic inverter grid-connection cabinets where safety and reliability are paramount. The product series has been supplied in volume for consecutive years to leading customers including State Grid Corporation of China, China Southern Power Grid, CRRC, Huawei, Sungrow, BYD, and other industry leaders.
