AMA AC2000 Ranch Energizer for 230Volt Power Fences, Max Fence Length 20Km, Charge Energy 3.1 Joule Volt: 230V Charging Current: 3.1J Maximum Discharge Current: 2J Maximum voltage: 9000V Voltage at 500OHMS: 3000V Power consumption: 6W Maximum length with strong vegetation: 4km Maximum length with little vegetation: 8km Maximum length without vegetation: 20km AMA Code: Original code: 91914 AT