This is the second time that I'm driving around town without any problems park the car for about five minutes. And I go to start it and the battery is dead. When I jumped it with my truck it started fine. Any ideas where I can start looking? Is it my battery? Or alternator? I just bought the car and have no idea how long the batteries been in there but its an interstate. I charged it up my battery charger and the car started fine but I went for a short ride around town and after when I came back the battery was dead again. Last week I drove to work and emmissions and had no problems. And also when I picked it up from the previous owner I drove 5 hours on highway and had no problems starting at the rest areas.