Similar thing happened to me. The battery wouldn't even jump start. It must've fried internally. I took the battery out of my x590 to get it to the garage. Put a new battery in and all was good.
No problem, I was a little puzzled myself at first. There was no warning like slow starting, I shut it off to eat lunch and went to start it and nothing.It was the battery, which surprised me as I've never had one just fail without warning and on a 60 degree day....thanks