How do I know if a Prius battery has been replaced?

I made an appointment to look at a 2011 Prius with 153,000 miles on it, but then I remembered that a lot of batteries need to be replaced by then. I don’t see anything in the Carfax history about a replaced battery. Is there any way I can tell by looking at it that the battery has been replaced already? If not, am I better off buying a Prius that’s closer to 200,000 miles because by then the battery would almost definitely have been replaced?