hey, a friend of mines car died while going down the highway. It just shut down and then would not start again. They had it towed back to their house and asked for my help. When you go to start it, it will just click. So I'm almost completely sure that its a bad alternator. Cause if it was a bad battery, the car would not have just died like that. But I just wanted to get a second opinion to confirm this before I head over there and pull the alternator off. I though about charging it and testing to see if it was charging at below 12 volts, but I don't have the time to wait for it to charge. Opinions?