Car Battery

I have a 12 - 14.4v craftsman cordless drill battery charger. i would like to know what the white wire inside the charger would be used for. the red=positive, black= negitive, but i am not sure what i should connect it to? it is a quick charger. i think i should mention that. thank you the battery cut out? does the stop the battery from chargeing? i know that the lower the amp charging the deeper the charge. that is that i am chooting for it is actually a 2.x amp output at least. its a quick charger. should i connect the white wire at all? and guess when its charged? or would it go to the positive so show full charge?

Not a good idea. a car battery is capable of absorbing in excess of 60a at 14v. your charger is probably rated at 1a at 14v. it will not only take forever, it will destroy your charger in the process.