Alternator issues

A little more info might help.

1. You mentioned batteries, do you have more than one?
2. Have you changed out your battery?
3. Have you measured battery voltage at idle?
4. Have you measured battery voltage revved up?
5. What kind of alternator is it?

Seems unlikely that over revving is you problem if you don’t see any mechanical damage.
I have only one battery. I do have a fully charged spare. When I found one dead, I changed swapped it out. That one drained as well. My father in-law checked it and just said no it isn't charging. I trust him because his years of racing experience and being a master mechanic. Alternator is a top street performance.