Convenient fully intergrated portable power. Gallagher S40 has 0.4 Joules of stored energy powers up to 25 miles / 80 acres and comes complete with solar panel, battery and leadset. This all-in-one energizer designed for quick setup to provide power on the fence wherever and whenever it is needed. Multiple power options. Wildlife mode pulses fast day and night. Full power mode pulses fast during the day and slower at night, conserving power when animals are less active. Water resistant case, with built-in lightning protection. 360-degree built-in mounting bracket for correct orientation toward the sun. This is an ideal unit for corn stocks and other rotational pasture grazing.