UEALINK × Weiteng Electric Industrial and Commercial Photovoltaic Energy Storage Complete Wiring Harness Collaboration Case

I. Project Background

Wittener Electric specializes in the manufacturing of complete systems for large-scale industrial and commercial energy storage, residential energy storage, and photovoltaic energy storage. In long-term, continuous high-temperature operation, conventional cables are prone to overheating and aging, resulting in significant energy transmission losses. Moreover, separate procurement of cables and wire harnesses leads to complicated assembly processes. For overseas energy storage projects, there is also the challenge of lengthy cable certification application cycles and high entry barriers.

UEALINK, leveraging its 55,000㎡ proprietary factory and a full suite of UL/CSA/TUV international certifications for energy storage, has launched UL-certified high-temperature-resistant silicone cables and special high-current cables for energy storage cabinets. It can provide one-stop processing of complete wire harnesses for energy storage battery clusters and BDU battery distribution units, meeting Wittener Electric’s needs for mass production of energy storage equipment and simultaneous delivery of domestic and international projects.

II. Key Collaboration Data and Outcomes

1. Order and Delivery Data

   The two parties have established a long-term, stable supply framework for the energy storage sector, covering the entire range of residential, industrial and commercial, and photovoltaic energy storage cabinets. Specialized energy storage cables and standardized BDU wire harnesses are produced in mass quantities, while also supporting custom development and prototyping of new energy storage equipment. MOQs are flexible to accommodate bulk purchases, eliminating substantial mandatory inventory costs.

   Direct supply from the Dongguan factory supports multiple delivery modes, including EXW and FOB. A dedicated project coordination channel ensures that response times—from drawing confirmation and sample production to mass production scheduling—do not exceed 48 hours. With a 100% on-time delivery rate throughout the year, UEALINK reliably supports uninterrupted production on Wittener Electric’s domestic and international energy storage lines. Additionally, it provides a complete set of export qualification documents, streamlining customs clearance procedures for overseas projects.

2. Quality and Compliance Performance

   All supplied cables comply with the UL10269 standard for energy storage applications, featuring resistance to 150°C high temperatures, low-impedance conductors, and low-smoke, halogen-free materials resistant to outdoor aging. This includes specialized high-current cables and high-temperature-resistant silicone cables, with customizable options available for complete wire harnesses for energy storage battery clusters and BDU battery distribution units.

   A full set of UL, CSA, and TUV international certifications for energy storage accompanies each batch. The factory holds ISO9001 and ISO14001 quality management system certifications, and every batch of cables and wire harnesses is accompanied by comprehensive test reports. Incoming materials undergo full inspection, and finished products undergo thorough electrical withstand voltage testing. Incoming material pass rates reach 100%, with no issues of batch overheating or insulation failure.

3. Quantifiable Value of Supply Chain Collaboration

   ① Reduced energy storage equipment maintenance costs: With cables capable of enduring 150°C for extended periods, cable-related failures in energy storage cabinets have decreased by 82%, leading to a 40% reduction in Wittener Electric’s annual after-sales maintenance expenses.

   ② Lowered energy loss in energy storage systems: Utilizing low-impedance conductor materials, overall power transmission losses in the energy storage system have been reduced by 3.2%, improving charging and discharging efficiency.

   ③ Improved whole-machine assembly efficiency: By providing cables and complete wire harnesses as an integrated package, the need for separate vendor procurement and coordination is eliminated, shortening assembly time for energy storage equipment by 26%.

   ④ Easier implementation of overseas projects: With built-in UL, CSA, and TUV international certifications, overseas energy storage projects no longer require separate cable qualification submissions, thereby reducing project approval timelines.

III. Significance of the Project Collaboration

This collaboration enables UEALINK to address three core pain points of Wittener Electric’s energy storage equipment—high-temperature degradation, cumbersome assembly, and difficulties in obtaining overseas certifications—through targeted solutions. It achieves R&D of specialized energy storage cables, integrated wire harness processing, and one-stop delivery of complete international certification reports, ensuring zero quality errors and zero delivery delays across the entire process. This comprehensive wire harness supply project further refines UEALINK’s standardized support solutions for the new energy storage sector, while also establishing a complementary business matrix connecting the company with leading new energy enterprises such as TE and BYD.