I have spent about two hours hunting through PC (using search, of course) and I can't find a discussion of this, so here goes... I recently (2 weeks ago) was given a 2006 Prius with 122,000 miles on it by my parents. My father, while giving me details about it's history, said that the large battery might wear out in the next couple of years because it was fully discharged while climbing the Rockies a few years ago. I have never seen the meter show more than 7 bars (green), and only twice. It usually sits at either 5 or six bars. Is it likely there is some damage, and if so is there anything I can do about it or watch for in the future?