While sitting idle the AC stopped working and then I noticed the battery gage was moving to the far left; the engine was not running hot. I parked my car and turned off the engine, when I started it back up it didn't start immediatley. I let my car sit for about 10 minutes and then it started up again. I drove it home without the AC or running the radio. Would I be having an alternator issue? Thank you for any feedback.