Parasitic draw will kill a brand new battery. Google how to find a parasitic draw or watch some youtube videos on the subject. You could have something that is draining the battery, something 'left' on. The battery may be defective, it does happen. Even though you have a 2022, the unfinished chassis could and probably is a lot older. Thor may have mis-wired something in the assembly that is draining your battery. Lots of things can lead to a dead battery. Good luck on finding the solution.
2018 Hurricane 29M
CHF, Saf-T-Plus, SumoSprings