Went out of town this past weekend, only to have Atlanta hit by a tornado. I have always left my '04 IQ plugged in as per the charger instructions. When I arrived back Sunday afternoon (no storm damage in my area), I found the charger had kicked on and still wasn't through charging Monday morning. I turned the cart to tow and disconnected the charger. There was a strong sulfur odor also. Having had the cart for several years, this is my first time to experience this. I did not have time this morning to check the specific gravity. The cart was last used Friday for a six mile drive without any noticeable problems. While I cannot attest to any lightning or power outages in the house, it is possible. Any thoughts?