I was thinking it must be something either putting a draw on the battery or a loose connection somewhere.
The car ran great yesterday, parked it in the garage overnight and today it has a low battery. I just tighted up and cleaned the battery connections and have the battery on charge, it initially took a 4 amp draw and then quickly went to 2 amps.
I've had several problems with the car including: Front wheel bearing went bad at 17,000 miles, back up sensor failed, drivers seat became loose, battery died.