The Power Wizard 0.06 Joule Solar-Powered Electric Fence Energizer quickly connects to most any new or existing fence line to provide 24/7 solar protection. The included 6V battery equals more power across your fence and will keep it charged longer. This Power Wizard energizer is ideal for smaller animals and clean fences, and it offers limited protection on livestock electric fences for larger animals. Automatic battery saver conserves battery life when there have been too many dark days to help prevent outages. This electric fence energizer easily mounts to a T-post, round post or flat wall.