So check your campers - I know FWC uses them from the factory and they are super common for the DIY guys...
Here is the notice I received from Sure Power.
They handled my emails very fast and offered me a refund or a new one. No questions asked, no giving me the run around as if I didn't know what I was talking about. They are a local company to me and I've used there stuff for 20 years - so I am sticking with them and getting a replacement.