2012, Prius III and still on the original 12V battery. 125K mi. No major issues over the entire life of vehicle. Am I an outlier with this kind of 12V battery life? I am thinking about proactively replacing it but maybe not if the life is typical.
Over the year I had 4 different Prius models (2000, 2003, 2009 and 2012 pip). I kept each for about 8-11 years and only had to get a new 12v battery once ever, It was for the 2003 when a door was left open when it was ~10 years old. I used to joke about needing to replace my Prius battery every 5 years or so -- the battery in the FOB. Mike
