The Speedrite 12000i Unigizer gives 12 output joules in a mains or battery configuration and is designed for farms with up to 90 miles of fence wire....

The Speedrite 18000i Unigizer gives 18 output joules in a mains or battery configuration and is designed for farms with up to 90 miles of fence wire....

The Speedrite 63000RS Mains Energizer gives 63 output joules and is designed for farms with up to 390 miles of fence wire. A low impedance energizer...