So, my car sits 5 days a week as I bike/walk to work/around home. I dealt with this earlier this year, got a new battery, all was fine for a while. But now, as he sits so much and I don't (should) drive him during the week, the battery is going low.

I drive him plenty on the weekend, and the battery is good and the alt. is charging, but it seems I have a draw somewhere killing the battery during the week. I even tried unplugging my cig. phone charger and the iPod from the back, but still.

Anyone had this problem? Any ideas what it could be short of taking him to a shop to find out?