Have a 4x4 Mahindra 6530 with a FEL. VERY disappointed in it. Alternator started acting up at just past warranty coverage and now it won’t start at all, even with a fully charged battery. Pretty danged sorry for a tractor with just over 300 hours....
John
My bet is your battery has a dead short in it. You can't even jump start them until you get a new battery.
kwg