Opinion from an electrical engineer - yeah, they're cheap junk. As mentioned above, it's like most of the rest of a TT, built the thinnest, lightest, least substantial, bare minimum and cheapest possible.
Our World Friendly Company converter (who names a company like that??) 8955 died during the third season while out on a long road trip. We smelled burning plastic one day while in a CG then the lights went dim some time later. The breaker feeding the converter had tripped. One of the cells in the battery was dead. We also had to replace the battery in the first season due to a dead cell so I suspect the converter had been defective for some time. We ordered a new Progressive Dynamics converter from Randy at Bestconverter.com and had it shipped to the next CG on our trip. Bought an AGM battery which I had been wanting to do anyway and the new converter is compatible with an AGM. I plan to move the battery inside.
We had our dealer check the battery and WFCO converter under warranty and of course found nothing wrong. I routinely check the electrolyte level in the batteries
Here is the old WFCO beside the new Progressive Dynamics. The PD one has 2 fans, much larger heat sink, a larger torodial coil and is simply heavier dutier overall.
