Does anyone know of a site where you can cross reference John Deere model numbers and sealed batteries. I tried the Optima site and they only have passenger vehicles. /forums/images/graemlins/confused.gif
The Kubota parts system should give you the BCI group number (physical size) and the CCA rating for the OEM battery. It might also be marked on the battery itself. Once you have that information just look for a battery with the same BCI number and CCA rating and you should be good to go.