Hey guys I'm having a problem with my 87 7MGTE. Thought I'd ask you guys first since you guys are the experts before I start swapping out the battery or something. Alright so the problem with my car is the battery keeps dying out all of a sudden so my father and I rolled the car out onto the driveway and boosted it with one of those Motomaster powerboxes or whatever they're called. Anyway it started up fine once we used that and my dad decided that he would take it out for a quick run because he wanted to get the battery charged up again. Fortunately we were just driving around the neighbourhood for ten minutes and then my dad stalled the car at a stop light. We tried starting it up after it stalled and it wouldn't start again. Not even a single light on the climate control was on. We got pretty lucky since we were just driving near our house so I ran down to my house and grabbed the Powerbox thingy again. It actually didn't work though but I think there just wasn't enough power in it to start the car because it got the lights on and everything but it just had the power to make the car lightly crank. Then I called a bunch of my friends and we had to push the car fast enough until my dad started it and drove it home. I'm actually pretty concerned about this problem and would like to know if there is any way to find out where exactly my problem is. I'm looking for good advice before I go down to the garage and start changing the battery tomorrow. I really appreciate all help, comments, and even bumps. Thanks in advance.