Okay so my car (2002 Lancer) is dead in my garage. I tried to turn the key and it was so dead it couldn't even turn over. I put it in neutral rolled it out and tried to jump it . I tried for like 7 mins. When it was connected to the other car it sounded like it wanted to turn over but I wouldn't , had it hooked up for like 7-10 mins. Still didn't work . Should I try for a longer period or do I have to buy a new battery .

 

From simple to most complex issue:

Check the wires and make sure they are clear of any acid corrosion build up. If there is any remove them and clean them with a wire brush. Make sure to clean the leads as well. They make a special tool but any wire brush will do. Wear gloves and eye protection... I don't think getting crud in your eye would be any fun. And don't be a mouth breather, I'm sure battery crud doesn't taste too good. Do one cable at a time and reconnect it after you are done, so you don't potentially shock yourself or your electrical system. Make sure you have a good connection to your battery. Turn the key...

If that doesn't work: Take the battery into an auto parts store and they can check the battery to see if it's dead. And they can tell you if it's alive, how much life expectancy you have... pretty fancy. You can do this yourself with a multi meter if you're the DIY kind of kid on your block,
"To test a car battery with a multimeter, first disconnect the cables from the battery. Set the multimeter to 50 volt scale. Connect the red lead to the battery terminal and attach the black lead to the positive. Read the gauge after 15 seconds. It should read at least 9.6 volts. If less than that, a battery replacement is needed." from http://www.ask.com/question/how-do-i...h-a-multimeter

If it is totally dead buy a new one, they are only 120 to 180 bucks. (the 180 ones are overkill IMHO, we drive ecoboxes) They take a couple dollars off for turning in your old battery. You don't need anything special to remove it just a ratchet set. Make sure when you go to install your new battery you properly secure it... a loose battery will wear out a lot faster and can crack, leak and be a general PITA.

If it's not the battery then it could be any number of things. But give the above a shot.

Also, if you store your car for a long period of months think about taking out the battery and buying a battery tender, which keeps the battery charged with a slow trickle of energy. Cheaper than buying a new one.

 

Thanks . I'm positive it's the battery my headlights won't turn on or there like really really dim and you can't tell. But when I jump it then the lights work. And yes my battery has a lot of corrosion I'll take a pic for ya . But I tried to remove my battery but the ground cable(the black one) won't come loose only my red on does (positive cable)

 

You can see in this picture I took a whole ago that it is pretty corroded

 

I took the battery and I'm gunna have it charged .