i bought a new battery around feb. 2007. got up this morning and the car won't start. the headlights won't turn on so i'm sure its the battery. the receipt says "limited 84 months." can i go exchange it?

 

yup, make sure your battery connections are still on. Someone mightve attempted to steal your car and disconnected the battery. If the connections were still good, go to the store with the reciept and have them check out the battery and they'll tell you whether the battery is still good or not and if you can exchange it or not.