Here is my situation. New battery, has been verified by seller. Tractor runs fine after starting with a 50amp battery charger. Ground test from negative post to generator as 0. Have 14.6 volts coming from the alternator when tractor is running. When leaving the battery charger on overnight the appears to have a dead battery, but if I switch to the 50 amp boost, the tractor will start after 5 min of charging. I can then use it all day without turning off, but as soon as I do it will crank. Not sure what to check at this point. I can only surmise that I have a short somewhere. Has anyone run into something like this and suggest what I might check? Thanks for your help.