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Gallagher S20 Lithium Solar Powered Electric Fence Energizer

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The Gallagher S20 Solar Lithium Fence Charger delivers reliable, off-grid power for up to 40 acres and 12 miles of fencing. This compact solar energizer combines fast-charging lithium technology with durable construction, making it ideal for remote pastures and portable applications where grid power isn't available.

Clean Fence: 12 miles / 40 acres
Typical Fence: 2 miles 
Stored Joules: 0.2 Stored Joules

The S20 Solar Lithium Fence Charger powers up to 40 acres and 12 miles of fencing without grid electricity. Built with an internal lithium battery, efficient solar panel, and intelligent energy management, this portable energizer handles demanding pasture applications. Backed by a 3-year warranty, it's engineered for dependable performance in remote locations.

G350404

Solar Lithium Technology 

• The S20 Solar Lithium Fence Charger features a lithium iron phosphate battery paired with a high-efficiency solar panel for continuous, reliable operation across 40 acres and 12 miles of fencing. With 9.3kV maximum output and a 3-year warranty, it delivers the performance needed for demanding livestock containment without external power.

Faster charging, long-lasting battery performance 

• Power your pasture without the grid. The S20 Solar Lithium Fence Charger delivers 24/7 containment across 40 acres and 12 miles of fencing using a rugged lithium battery and efficient 3.8W solar panel. Perfect for remote locations where reliability matters most, this portable energizer keeps your livestock secure in any season.

Intelligent adaptive energy control

• The S20 Solar Lithium Fence Charger uses intelligent adaptive technology to maximize battery life and fence performance. Its smart electronics continuously balance solar input with battery voltage, optimizing power delivery to keep your livestock contained reliably—even through cloudy days and nighttime hours when sunlight isn't available.

Protected circuitry and battery longevity 

• Patented double-glazed solar panel and plastic enclosure protects internal circuitry and internal lithium batteries from extreme temperatures

Suitable for wildlife exclusion 

• Two operating modes ensure optimum battery management and animal control specific to your fencing requirements. Wildlife control mode, operates with a fast pulse day and night to ensure wildlife exclusion.

  Livestock animal control mode, operates with a fast pulse during the day, and slower pulse at night for when domestic animals are less active.

Portable power - designed to be easily moved around the farm 

• Lightweight, compact and easy to install and move with an integrated carry handle, making it the ideal solution for strip grazing and rotational pasture management

Fence and Energizer performance at a glance 

• LED lights indicate if the built-in lithium batteries is running low

Fully integrated, ready to use 

• Simply mount on a suitable post and connect it to your fence and earth. Includes fence and earth lead, rechargeable lithium battery and solar