3 Joules of stored energy. Powers up to 25km (15 miles) of multi-wire fencing. Quickscan Output Voltage bar: shows the performance of the energizer at a glance. Tuned output circuit for maintaining strong output voltage for stock control. Fully modular design that requires no fasteners providing easier access for servicing or module replacement. Split bolt terminals with wire guide for simple and clean wire installation. Green indicator light flashes when energizer is working satisfactorily Ideally suited for small block holders.