Material selection plays a pivotal role in the performance of connectors subjected to challenging environments. The E-bike small M6 connector, often composed of resilient materials like brass, is typically enhanced with a protective gold plating. This choice of materials ensures excellent corrosion resistance, a vital attribute for components exposed to moisture and varying temperatures. Furthermore, connector inserts made from TPU and PA combine flexibility with high tensile strength, providing durability while also preserving functionality through frequent connection and disconnection processes. Such material composition allows the M6 waterproof connector to sustain prolonged exposure to harsh conditions without succumbing to wear and tear. Its compact design is specifically crafted to fit efficiently within the limited space available on e-bikes, therefore supporting the intricate build of modern electric bicycles. The robustness of these materials contributes to its reputation for reliable performance, especially when other connectors may falter under similar conditions.