Originally Posted by
RalphEx1
Thanks guys.
OK, so today in the morning I went to check out the car. It is completely dead. So when the alternator goes bad it causes the battery to drain overnight?
The problem is that when it fails, you never know to what percentage the battery was charged to when you left it. The computer systems in your car still draw current when the car is off.
So to your question I'd say yes. It is possible. Unless ofcourse you charged it to 100% when you left it.