Solex 27 #1 Posted June 16, 2015 My recent upgrade from an 8 to a Magnum 12 has put a strain on my old battery. So much so it is time to go shopping for a new one. It still gives 12.5 volts in the beginning, but quickly dies and does not have the cranking power any longer to turn the engine over. Therefore, what would be the minimum cold cranking amps required in a battery for this Kohler Magnum 12? Share this post Link to post Share on other sites
MikesRJ 552 #2 Posted June 16, 2015 (edited) Depends on which tractor, and if wintertime use will be expected as well, but Kohler recommends (RE: page 7: http://www.kohlerengines.com/onlinecatalog/pdf/52_590_03.pdf) for the Magnum 12, a minimum of 250 CCA. Personally, I use my machine for blowing and plowing snow, so I'd go with something like a 275-350 size. Cold will run a battery's CCA down a lot faster than wear and tear. Winter is when the CCA rating really matters. Edited June 16, 2015 by MikesRJ Share this post Link to post Share on other sites
bmsgaffer 2,043 #3 Posted June 16, 2015 Make sure your charging system on the tractor is working first. You could kill another battery quick if not.You should see between 13v and 16v at the battery when the engine is running. Share this post Link to post Share on other sites
wrightorchid 261 #4 Posted June 17, 2015 Advanced Auto and other places can do a test/load test on it, and see if there is a bad cell or something. I too agree, with the higher CCA rating. It does not cost much more, and unless you have a temp controlled area, not too hot, not too cold, it should be more reliable. Share this post Link to post Share on other sites
oaktown1987 82 #5 Posted June 19, 2015 Hey solex what happened to the 8 Sent from my iPhone using Tapatalk Share this post Link to post Share on other sites
