Energizer M60Powers up to 40 acres or 10 miles of clean fence with the Gallagher M60 Fence Energizer. With 0. 6 stored joules the M60 is ideally suited for small pastures. WARNING: This product can expose you to chemicals including Styrene which is known to the State of California to cause cancer, and BPA which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www. P65Warnings. ca. gov.