if you have a choice always buy the highest rated battery ,. and start by charging it for 12 to 24 hours,. the battery will thank you with a long life, and charge it from time to time to keep it happy,. thats what I do in the great white north where it can go to 40 below zero,. my tractor is used all winter with the snow blower,.26 below this morning,. last week it was 30 below and it started , with no trouble,. PGT 9000 craftsman 26 HP. have a very merry Xmas and a happy new year,. de dee