Extreme Temperatures: Extreme cold and/or heat can stress the internal chemistry and structure of a car battery and induce premature failure and random dying. In most cases, there isn’t much you can do about temperature extremes but it’s a factor that you should know about. Chemically what goes on is called “sulfation”. It’s a build-up of lead sulfate crystals which can shorten the life of the battery and lengthen the amount of time needed to charge it. If your battery is heavily sulfated and you don’t drive your car a lot, as we discussed before, the battery may never get fully charged.

Excessive Current Draw: There are devices in your car that will draw a small amount of current to stay on, things like your clock circuit and other items. Normally this sort of thing won’t kill your battery however, if you have an excessive current draw due to a wiring short circuit or some other kind of fault, then your battery may lose its charge before you get a chance to drive your car again. Of course, leaving a light in your car on will do the same thing (as we all know!).

When in doubt, consult a professional mechanic to find out what the problem is.

Article Source: Sheridan Ford