What types of batteries do you use in your cars?? Mine is going pretty soon (probably won't start tomorrow) so i wanted to get a new one. I don't run many things off of the battery, just what ever the car needs, and a small amp, and PIAA fogs. Thats it. The alternator i will check later, but i'm fairly sure its good. My lights are only dim at idle, once going the lights are ok. Any suggestions as to battery type ie. optima, ac delco, etc.