My L3400 still has the aftermarket (NAPA) battery in it that it had when I bought it used in 2014. I keep it in the barn, and stick a cheap Harbor Freight maintainer on it when I know it's going to sit for weeks or longer. The battery, when standing at the front, has its pos. terminal on the right side, towards the rear of the tractor. The tractor has always been dead reliable, knock on wood/metal. I hit the glow plugs 3-4 seconds typically when it's cold. I had block heaters on my previous Kubotas, but none on this one. Maybe global warming has negated the need for them here in Northern Maryland?