Bought this car used with 130k miles. Was running okay, but then it started acting up. The car would not start by itself, and it needed a jump start. Then let it warm up drove it to pep boys they tested battery and charged it said it is a good battery. The problems when away for some time. Now I got my wheel bearing replaced last week...shortly after that the car is back to not starting up. The battery is reading 12.3 volts when nothing is on. Then when I attempt to start volts drop to 12 and under. Brought the battery to autozone to get charged and tested; I only did that because the man said the battery needs a full charge to be able to properly diagnose any underlying issues..(alternator, short, or maybe electronic drainage) can anyone shed some insight on these issues here???