Every couple of days, when I go to start my car, there is not enough juice in the battery to get the starter going, or even to lock the driver's side door. I replaced the alternator about four months ago so I don't think it's that. And I took the battery to Sears and they tested it to see if it held a charge. They said it did. I'm wondering if there could be a light or bad connection draining the battery when the car sits. I don't have a trunk light, so it's not that. Anyone have any ideas? Thanks to anyone who responds.