I've stored my 07 GT since the beginning of last november, but upon trying to start her up, I found that anything requiring electricty is non functional. Windows, lights, door locks, even that "key in ignition *ping*" ceases to work. Now, I had started her back in mid February during a moment of winter depression with little trouble. But as of now, the battery is completely gone. I neglected to detatch the negative terminal of the battery during the storage, which in retrospect I should have done. However, I am curious as to how the entire battry discharged between mid February and now when it lasted for 3+ months just fine. No lights were left on and the doors were closed and locked...

Anyway, I've had the battery hooked up to a manual charger for about an hour, but it effectively did nothing. Not even the door locks work, let alone cranking the engine. Being a bit of novice when it comes to working on cars, I just wanted to ask:

Should I take off the positive battery lead to expose the entire post to attach the charger to? Or should simply attaching the charger clamp to the very top of the post suffice? If the latter is fine, is this a case of cleaning the clamps and posts to get better connectivity or is there be something wrong with the charger?

Thank you for any help.

 

if its the stock battery throw it through the window of the closest Ford service department window and buy a new battery that is not motorcraft

chances are, the battery is depleted to the point that it wont hold a charge at all

how the battery charger is connected won't really do much

you can try to jump start it and see of the alternator can bring the charge back up to a decent level, but it doesnt seem promising

 

I am amazed that your battery started the car after the car sat for over three months. Ford says you can let the car sit for up to 30 days if your battery is fully charged at the beginning of that time. Even with everything "off" you have a drain because of the computer.

There is probably nothing wrong with your charger. The typical charger will not charge a battery that is completely dead.

Your best bet is to get a new battery. The plates in your present battery are probably so sulfated that even if you used a professional grade charger to bring it back to life, your battery would not give you good service for very long.

 

Try this, and you'll probably need a new alternator in addition to a new battery.

 

r u sure the what does the eye of the battery read? did u try push strarting it? having the car roll foreward then drop it ito gear, that works sometimes, and also, u never know what other factors it could be. do u have rats in the garage? it could be possible a rat chewed threw a wire... just saying u never know...

 

Get a new battery. The stock batteries don't last very long. Better to do that than get stuck with a dead battery away from home like I did and have to call AAA at 2am. If you have the active anti-theft system, you won't be able to drive it with a dead battery anyway.

 

I had a very similar experience and after the winter storage with no trickle charger, the stock battery was shot. It finally did take a charge, but would not last more than a couple days before it was too dead to even turn over the motor.

Looks like you have an 07 and if so, this is still covered under warranty. Call Ford and have them take care of it as you might even get it towed for free to the closest dealer.

 

same story with my '08. but, i recharged it with 12-14 hour slow charge. let the battery sit another month before i had time to put it back in the car, and it started without trouble. might be worth doing an extended trickle charge before spending the dough on a new battery...

 

I have my '07 GT/CS Convertible parked in my garage, as well as a friends '08 GT/CS. I have been keeping a pretty close eye on mine, and the battery held a charge all winter, but it wasnt enough to start the car when I tried, so I bought a trickle charger and it is fine now, the other GT/CS had a dead battery and after throwing the charger on it for a day, it is somehow managing to still hold a charge.. I thought once a battery was dead for a long time that was it, get a new one... especially if it froze dead, but somehow it is still holding a charge, kind of amazing actually... but yes, if it is still under the 3/36 miles or 3/60 km (Canada) factory warranty get a new one, Ford Extended Service will not cover this however... that is one of the only things not covered by extended PremiumCare, beyond the factory warranty.

 

My 06 has the stock MC battery and it's still OK. Been deep cycled once too. I'm hoping to get at least another year out of it.