What would cause my car to act like it is? '84 Trans Am LG4 with Accel supercoil and wires, optima red top battery, Autozone alternator one year old, Autozone starter three years old.

I've never had a problem starting the car, ever. Now it seems like the battery isn't holding a charge. One day the car was dead. The voltmeter didn't even move when turning the key. I put the charger on it overnight and started it up in the morning. No sweat. I left it sit for about a week or two and tried to start it again. The same thing happened. No power! I jump started it and drove it 15 miles into town. I thought the battery would charge enough in that time to work ok. That was dumb because it wouldn't start back up in the wal-mart parking lot. I jumped it again. She died at a stop sign and I had to jump it again. All the while the engine was running, the volmeter was charging at 15 volts. When it stopped at the sign, the only thing that happened is the 'click-click-click' from the solenoid engaging. That's more than happend before I jumped it. I took the battery to Autozone for a test which it passed. What else should I be looking for?

 

Well obviously its probably not the battery. Take the alternator to autozone, they will test that also.