Gallagher S120 Lithium Solar Electric Fence Energizer

The Gallagher S120 Lithium Solar Fence Energizer is a high-output, portable unit built for farmers and land managers who need serious fence power across large acreage without a grid connection. Delivering 1.2 stored joules, the S120 is capable of powering up to 35 miles of fence covering approximately 120 acres under ideal conditions with proper grounding and minimal vegetation contact making it a strong fit for cattle, sheep, horse containment, rotational grazing, and wildlife exclusion applications. A 12-watt high-efficiency solar panel continuously charges the internal lithium iron phosphate battery, while Gallagher's intelligent adaptive energy control monitors sunlight levels and battery capacity in real time, automatically adjusting output to maintain steady voltage across your fence line day and night. The post-mount design keeps the unit elevated off the ground, protecting it from livestock contact, rising water, and vegetation interference, while an integrated carry handle makes repositioning straightforward as grazing rotations change. A durable, impact-resistant housing with built-in lightning protection and weather-resistant construction ensures the S120 keeps performing through rain, heat, and extended low-light periods. The unit comes ready to use with a rechargeable lithium battery, integrated 12-watt solar panel, and fence and ground leads included. Backed by Gallagher's 3-year manufacturer's warranty and U.S.-based customer support, the S120 is a dependable, low-maintenance solution for serious off-grid fencing applications.