Yea well more than likely your right about the battery.
One i had on there when i bought the car i overcharged!! i replaced it with the best one i could get in the local tune up and it dosent even fulll the battery tray!! more than likely this is my problem then.

Does anyone have a spare battery clamp? i dont have one and basically my batterys screwed down with 2 12mm bolts with big washers on!!

Thanks very much guys