07wingnut
Silver Member
You mentioned that after the first start attempt, the battery starts getting weak, in spite of the battery tender being used. It might be because at the temperatures you are experiencing, the battery output is probably less than half of its rating, and at that temperature, it won't take a proper charge, either from the tender, or from the tractor generating system. Cheap fix, buy a battery blanket to keep the battery warm, and leave it plugged in all winter. I believe they take about 50 to 60 watts, not a large hit to the wallet for purchase, or electrical consumption.