They are absolutely horrible. I ordered a Corsa exhaust from them. After a month of waiting and being told by 3 different reps on 3 different days that it was shipping tomorrow I was finally able to cancel the order. Ordered from Amazon the next day for $250 cheaper and it was delivered in 2 days. Stay far away from RealTruck.
The dealer should run a battery diagnostic on your truck. Same thing happened to me. The tests takes 4 hours according to my dealer. They ran mine and my battery came back as borderline fail. They ran the diagnostic a second time and the battery failed. A new battery was then installed and covered under warranty. My truck had 1000 miles when this happened. Everything has been fine since for my 2020 Trail Boss.
I had the same issue with my 2020 Trail Boss at 900 miles. It was a bad battery. The dealer hooked it up to a battery diagnostic machine for a 4 hour test. It came back as borderline fail. They ran the test again for another 4 hours and it failed. The battery was then replaced.