The Gallagher S400 Solar Energizer is a powerful, self-contained solar electric fence energizer designed for larger pastures, rotational grazing systems, and permanent or semi-permanent livestock fencing. With an integrated solar panel and rechargeable battery, the S400 provides dependable fence power in locations where AC electricity is unavailable.
Its solar-powered design makes it an excellent choice for remote pastures while eliminating the need to regularly transport and recharge an external battery.
Key Features
Integrated Solar Power: Built-in solar panel keeps the rechargeable battery charged during normal outdoor operation.
Self-Contained Energizer: Solar panel, battery, and energizer are combined into one convenient unit.
Designed for Larger Fence Systems: Provides considerably more capacity than small portable solar energizers.
Remote Pasture Ready: Excellent for locations where access to AC power is limited or unavailable.
Ideal for Rotational Grazing: Well suited for pasture subdivision, cross fencing, and managed grazing systems.
Portable Solar Solution: Can be relocated as fencing and grazing requirements change.
Weather-Ready Construction: Designed for outdoor agricultural electric fence applications.
Specifications
Brand: Gallagher Model:S400 Power Source:Solar / Rechargeable Battery Stored Energy:4.0 Joules Output Energy:Approximately 3.1 Joules Application: Livestock Electric Fencing
Energizer Sizing Recommendation
We Recommend the 1 Joule Per Mile Rule
For practical farm applications, we recommend approximately 1 output joule for every mile of energized wire rather than relying only on maximum manufacturer mileage ratings.
Remember to count the total length of every energized strand.
For example, a 1-mile fence with three hot wires equals approximately 3 miles of energized wire.
Vegetation, poor connections, dry soil, damaged insulators, and other fence conditions can increase the amount of energizer capacity required.
Grounding Recommendation
We Recommend Approximately 3' of Grounding Per Output Joule
With approximately 3.1 output joules, we recommend roughly 9–10 feet of total grounding as a starting point.
Grounding requirements can vary considerably with soil conditions. Dry, sandy, or rocky soils may require additional ground rods or a more extensive grounding system.
Common Applications
Rotational grazing
Cattle fencing
Sheep and goat fencing
Remote pastures
Permanent electric fencing
Semi-permanent fencing
Cross fencing
Pasture subdivision
Off-grid livestock fencing
Use Summary
The Gallagher S400 Solar Energizer provides a powerful off-grid solution for producers who need dependable electric fence performance without access to AC power. Its integrated solar panel, rechargeable battery, and approximately 3.1-joule output make it a strong choice for rotational grazing, remote pastures, and larger livestock fencing applications.
