Everything about this dependable solar unit, from the 0.4 Joules of stored energy, to its ability to power up to 25 miles / 80 acres makes it appealing. Comes complete with solar panel, battery and leadset. Two operating modes ensure optimum battery management and animal control specific to fencing requirements. Wildlife control mode operates with a fast pulse day and night to ensure wildlife exclusion and the livestock animal control mode operates with a fast pulse during the day and a slower pulse at night for when domestic animals are less active. Great solar fence charger selection for wildlife exclusion.