I was under the hood checking out some things for the airbox. I happened to look over at the bottom of the battery. I can't believe I never noticed this, but I have so much corrosion build up, the hold down bolt is actually eaten away! There is also caked corrosion under the battery box. Trip to dealer come Monday! This is making me wonder if I am overcharging? Can you think of anything I should have checked that could have caused this? I mean for 4 months, and 3800 miles, this is really excessive!