The Gallagher™ Fence Energizer M300 offers 3 Joules of stored energy and will power up to 85 acres of multi-wire permanent fence. This energizer has a Quickscan Output Voltage bar graph which shows the output voltage of the energizer at a glance. Ideally suited for small pastures. Formerly known as the PowerPlus M300. Can arrange pick up in Greely or Barrhaven.