The JVA SV5 is a solar powered electric fence energiser. The JVA SV5 is ready to go straight out of the box. The SV5 is the perfect portable electric fence power solution. Its integrated design makes it suitable for strip grazing, no need to lug or replace flat batteries. The solar panel on the SV5 charges the inbuilt battery and the energiser runs off the battery. Features: 0.5J powers up to 5 kilometres* Integrated 5W Solar Panel, Battery and bracket, nothing to add! Auto-Sync TM Technology for safer fences LCD shows fence voltage, stored energy and battery voltage Power on demand (automatically ramps up power when needed) Over discharge battery protection Highly efficient and intelligent digital design Basic lightning protection UV Stable enclosure O-ring sealed case for ant and moisture protection * The actual acres or kilometers of fence powered by this energiser depends on your farm fence conditions and therefore varies greatly. The best method to compare energisers is to use pulse output energy (Joules)