Quote:
Originally Posted by ckelly78z
A higher CCA battery will have more starting strength in the cold months. My diesel truck has TWO 1150 CCA batteries.
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correct. although i dont know how much more CCA you need in the winter. yes the engine will be harder to trun over but the bigger problem is what the cold does to the battery itself. pull up a tech sheet on a battery. on the one for one of my UPS's the float voltage goes from 2.27v percell at 77 degrees to 2.29v per cell at 68 degrees.
a lower CCA does not mean it will go dead sooner. think of it as power that the battery can put out. does your car require 330A everytime it starts? probably not.
although 330a is pretty small for a car battery. most are in the 6-700 range at least.
i usually just buy cheap advance batteries these days. i dont know if you are really getting your moneys worth out of a more expensive battery now.
exception. a lot of new cars "require" a certain battery like my mercedes. perhaps it is due to the internal resistance.