We bought our Prius at 95k miles at a Toyota dealeship about a year and a half ago. I havent reset the mpg in several tanks of gas and am averaging 50.6 mpg. Last night we pulled in to our neighbors drive to look at her dog and sat and chat with the windows down for about 20 minutes. I never turned off the car but the parking lights were on. I noticed the traction battery display only showed 2 bars when we got back on the road. Within about 5 miles, the battery was back up to normal 4/5 full. Again today we pulled in a long line at Mcdonalds. By the time we got through, the battery meter showed slightly less than half full. I've never noticed the car do this in the time we've owned it. Is this normal? I thought it never drained it just sitting in one spot before like this. A little history on the car.. When we bought it with 95k miles, the salesman said it was in for a new traction battery and the orig owners just traded up instead of waiting on it so according to him, it had a fresh battery. Whether or not it actually did is up in the air. I suppose I could call Toyota and get a history report for the car? Is this nothing to worry about? It just seems to be adjusting faster than ever lately.