The more
CCA (
Cold Cranking Amps) the stronger the battery, especially in colder weather.
Cold weather can really reduce the amps, a lot at very low temperatures, it's in there but the power just can't get out and be used. Hot weather will quickly use up the amps, even in an unused battery, even when it's not on the tractor. Higher CCA batteries may last "slightly longer", but removing the battery in very Cold or very Hot weather is best for long life, and storing them in a cool low place. CCA is always measured at 0ºF at 30 seconds, but is for an output of only 7.2 amps, some of our tractors require 10–12 amps as a minimum to keep running; a higher CCA is capable of giving more amps and for several cold-starts at 0ºF, plus older tractors may not pump the fresh fuel in fast enough to start on the first try.
Which CCA you get depends on your need, battery's exposure and what you are wiling to pay; because I need them to plow & throw snow in our Michigan Winters, when often well below zero Fº, I always go with the higher CCA's myself (350 to 400). If I know it's going to be a minus 10-20ºF, then a small bulb is left on next to the battery, and then 'my baby' is covered with blankets overnight, out in the barn.
Michigan Glen
Edited by GlenPettit - 12 Jul 2016 at 11:28am
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