Would a failing battery cause slight flickering in the electrical system and/or the alternator?? I thought battery testing involved placing a load on the battery to see if it is holding charge under load? I have no idea how to test an alternator but would assume that the alternator is also tested when the battery is tested? yes?? The battery is a Varta, could be original. The CF is an 07 so it would be time for new battery……. Sears could figure this one, I suppose. Thanks for any other suggestions and input about battery testing.