My vehicle's battery keeps dying. It started about a month ago, and the battery has been dying about once a week, if not more. I have tested the battery and alternator and they both work fine. Something is draining the energy out of my car ( there are a lot of complaints for the door latch could this be a possible cause?) Has anyone had a similar issue?

My car won't start, no warning. battery seems strong, but starter won't turn over. AAA comes out and jumps it off and it may go 2 or 3 months, then happen again. This has happened 5 times in the last 8 months. Dealership says there is nothing wrong with the car that they can detect. They say only way to find the problem is to look at it when it happens. Guess they won't be fixing it as they don't do roadside repair.