The battery in my 04 fx35 is less then 2 years old. After a 500 mile drive home from upstate new york I parked my car in the garage. 7 hrs later I went to start it in the morning and it was dead, completely dead. Tried jumping it and it still wouldn't start, not even a noise. Do you think it's the battery or something else is going on. I would hate to buy another battery when the problem is not the battery. Thanks for the help.