I have a 2018 2552 PC. I store it in a garage over the winter. This winter I have had to jump the chassis battery every time I went to to start it and the generator. I try to do this several times during winter as long as I can get the garage door open. I recently took it to an RV repair shop to get the roof seams touched up and to get the water system sanitized. The shop tells me that the battery is shot (I had them install a new one). They are surprised given the age of the unit. They think there is something drawing on the chassis battery, but cannot test it. I have to take it to a Ford dealership to get this tested. Has anyone else had similar problems with chassis battery? How did you resolve it?