House battery charging options

etrippe wrote:
We are 4 months into our new travel trailer and having never owned one before I have some questions about battery charging. I was wondering if while camped, would plugging back into my running tow vehicle charge the battery? We don’t plan on any extended boondocking but for one or two times a year for maybe 5 days maximum. No ac, tv or microwave required. However our refrigerator is 12 volt and we have a max air fan that would be running all night possibly. Just looking at our options. Generator, solar or just run the car. Trailer has 1 12v. battery, and most likely low quality.