It sounds like a lot of folks are having the same type issues. I have the 2013 Chevy 2450S. I just found out that you have to have your 12V switched on in order for it too charge. So when you run the Chevy, plug it in to shore power, driving down the road, running the generator you need to turn the 12V on in order to properly charge. With the 12V off and plugged in you will show 4 pretty red dots, when you turn the 12V on all by itself you may only see one. I figured this out, took me the whole winter though!!