[_JET_]

I was driving to work this morning and my battery light came on. Everything was running fine and when I was in neutral and at idol the light would go off, i was thinking about ignoring it because nothing felt wrong but since the car is still under warranty I took it to Ford. Initially I thought it might be the belt slipping because its raining but they checked the belt and said it was fine. They said it would be either my battery or alternator, they wanted to charge me $70 to figure it out since the alternator is only covered until 60k so i left. I was on my way to an Interstate battery place because they sell refurbished batteries and i thought they could test mine as well and i could easily figure out the problem. On my way there the battery light goes off so I go to work which is a 20 minute drive with no problems.

Sorry for the long story but i am wondering if i should be worried at all or if you think it was just something that fixed itself. My car at this point is stock aside from a SVT steering wheel.

Thanks for the help