I posted a couple days ago that my car died in a supermarket parking lot. I cleaned off the battery terminals and got a jump. The battery charged fine, it was going + according to my voltmeter. I didn't drive the car for about a day, and when I went back out... the battery was dead again. I realize this could just be a bad battery, and I have already replaced the battery. But this could also be something grounded out draining my battery, and I'm not going to know probably until sometime tomorrow when it will have time to have drained my whole battery. Is this a common problem? I mean... is there something that commonly grounds out that wouldn't be immedately obvious?