Testing continues as time goes on, the longest I have run it was about 2 1/2hrs. This was plowing the biggest snow fall we had this yr, right after I finished the driveway I drove it down to my neighbors and back, about 3km total. When I got back I put my hand on the motor and it was hot, couldn't hold your hand on it too long. I also checked the controller and it was cool, not cold but not warm either, that unit doesn't heat up at all. I let the tractor sit for an hr and then measured battery voltage, 2 batteries down 50%, 1 battery down to 45% charge, that battery runs the 12volt lights and I was using them.
Here's the latest video, a summary to date.