Unhook the positive lead from the battery, and see if the voltage goes up to 12 or so.. if it does, you have a draw on the battery from somewhere in the car. hook it back up and pull fuses one at a time to find where its coming from.

If it still sits at a half a volt, it's fried.... badly.

 

get it checked at autozone..

 

will the only reason you read 14 + is thats the alt pushing 14+ volts

 

sounds like you have a short somewhere ... btw, CF is a great conductor, friend of mine had the same problem and it turned out to be a CF valve cover shorting out on some exposed sensor wiring...

 

Heres a little bit of info, depending on the specs of the battery and how much of a load is on it with the car off, as well as environmental factors, if the battery is drained to a certain point it will lose its ability to hold a charge. This is why batteries go out to begin with, technically they are just boxes with corrosion inside. An anode and cathode in a pool of electrolytic fluid, one side eats away introducing electron flow in the process. By eats away, I literally mean eats away until it is no longer functional.
Toss in a new battery mabye from another car and give it a shot for a day or two. Occasionally battery tenders (the machine at autozone etc.) fail to diagnose this problem.

Typically higher output batterys maintain their stagnant charge for a shorter period of time, than economical batteries. You can never have the best of both worlds.....

 

I crank mine atleast once a week, even if I don't drive it. Mine sat for about 3 weeks in the cold and it drained the battery but it charged up after driving it for an hour.

 

i bought a black and decker 1&2amp battery charger and hooked it up to charge...the battery voltage is at 1/2 volt and the light on the charger keep blinking from charge to full rapidly and after a while it just stops charging...i think those are what you called a battery tender...it makes no sense how could the battery be fried...i just didn't start my car for 2 months...any advices?? i am going to take it to autozone and have it recharged and tested to see whats wrong with it...thanks

 

the batteries arent meant for cars. if you want a long term, no hassles solution, put a full size battery in your car. you'll be very happy

 

DING DING DING DING!!
You install the leads once, and from then on all you need to do is plug it in.

 

i had the battery tested...it turned out to have an internal short from sitting in the cold for 2 months??....i guess there is no way to repair it.....thinking about relocating the battery to the trunk

 

Ding ding ding!!! once batteries are drained, they dont hold a full charge again. Get a new battery

 

That's what I was worried about... it can happen... just know that if you relocate your battery to the trunk, if you go to a drag strip they might give you **** for not having an on/off switch on the outside of your car!

 

I have a mini-bat in my car. I bought a $30.00 battery tender from Auto Zone. The car sat for 7 months, and the battery is still excellent. If you want to run a small battery for weight reduction, get a trickle charger with an automatic mode.

 

quick question, is it ok to charge the battery while positive and negative terminals are connected to it? Kind of similar setup like in jump starting the car.

 

I do this all the time when I'm out of town for more than a weekend (using a trickle charger). Doesn't seem to hurt anything as far as I can tell ...