First up, I must congratulate the Chinese manufacturer for being able to manufacture and ship our order so quickly. They really were a pleasure to work with, including when we had a minor problem with the shipping (which wasn't their fault).
Also, as the photos hopefully show, the cables are very solidly built, with much thicker wire than the little ones we were contemplating using previously. They will be able to easily support large panels and batteries, with charge currents being limited only by the battery charge controller inside the Mesh Extender. The cables simply give the strong impression that they will do the job well, which we will test over coming months.
The only complication we encountered, was that they didn't have stock of the white cable material, so we had to opt for the black PVC cable, which will slightly increase heat loading of the Mesh Extenders. But given the time frames that we are working to at the moment, we needed to simply be sure that we would have the cables we need, so that we can get the cable head moulding tools made and cables assembled in time. Critical paths are everything when building hardware!