gotmyfarm!
Member
That was a good question and replies about battery theory. I read it after I got home today with the new 12V battery for the conversion I'll be doing this week on the Farmall M from 6V. My question is, did I get an acceptable battery? I had no idea which one to get. I was at Advance Auto, and I think it was Carquest brand they had? They have good better best, kind of choices. I got the middle quality with the middle 2 yr warranty. So the numbers is what I didn't know about. 6V had higher numbers all around than the 12V, I found out after I got home. 6V had 650 cold crank, and the new 12V only has 575. Is that enough? 6V had 7XX at 32* and 12V has 6XX. Can't remember exact numbers there to the tens. And the 6 had 181 reserve and the 12 only has 80!! Should I get a different 12V battery? Is it too wimpy?