have a mitsubishi magna 91 that I have had sitting in my driveway for about a year, not being driven. Now that I have decided to drive it I have charged the battery up I am having problems with it. The car starts up fine and drives, but as soon as it is turned off the car wont turn back on - like the battery isnt holding a charge. I have tried a brand new battery in it and it still doesnt fix the problem...anyone have any ideas what could be wrong with it??? Thanks heaps for any help 