Not sure if my HV Battery already replaced or not..

From what you wrote, it seems that the traction battery was replaced. Based on the numbers it appears it would have been done under warranty. If you have any doubts, it would be best to contact Toyota directly. They will know exactly what has been done. Any local dealer should be able to help you.

Best of luck to you.

 

Although the wording isn't perfectly clear, it would appear you scored one of the most ideal used Prius scenarios. I would agree with dorunron that verification is needed to be certain, though. If verified, the question becomes why the fairly premature death?.. I'd say check the hv battery fan for clogging. This is always a prime suspect in early hybrid battery failure and dealer techs don't always take it upon themselves to chase down the "why." If you find the fan clean then you've still crossed off one of the most critical items to inspect when buying used.

 

Just pull the carpeted plastic cover off the top of the HV battery. Look for the white sticker. If it says manufactured by PrimeEarth then it's 'new'. If it says Panasonic it's old.

 

...the other generic reason for early batt replacement on a Gen2 is some owners run out of gas and then run down the HV battery too low. But the cooling fan should be checked, every 100000 miles or so.

 

That's really good for you. It comes with a 1-yr warranty so I guess thats over but we'd expect at least 8 yrs out of it.