I have replaced the battery 3 times in roughly 3 years. I havent had the electrical system tested but am looking to see if anyone else has had an issue like this. For example, today i didnt shut my door all the way so the done light stayed on. I came back out 10 minutes later and the car wouldnt crank. This basically the same thing that has happened all 3 times. It seems like a bigger electrical system issue to me but i dont have knowledge other than to think it is an alternator problem. Thanks.