I can have as many as two trees down on the Smaller version and I know I still have a few days before I run out of power. Right now on this unit I just realized that 6 months or more ago I needed to set the lowest line on a new insulator its been touching the ground lightly for months! I have been keeping horses for about 30 years. This is the first and last solar chargers I have ever bought. But I do check them regularly. This one bites too, I had one horse fall to the ground in surprise of his first contact. My horses do not test these lines. I separate Stallions and mares with a barbed wire fence and one elec line on top, Not a single injury in 7 years. In wake of Hurricanes you sometimes end up pushing things to the limit.
This is the best-made fence charger of the five or six different kinds I have used over the last twenty years. They don't wear out, even after years of being out on the fence constantly, and they provide a strong jolt even when touching weeds and grass.It's the only brand I will buy now.