Gallagher S20 Solar Lithium Fence Charger / 12 Mile / 40 Acre

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Gallagher S20 Lithium Solar Powered Electric Fence Energizer

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

The S20 Lithium Solar Fence Energizer delivers reliable, portable power for electric fencing with advanced solar and battery technology. This compact unit combines a high-efficiency solar panel with a durable lithium iron phosphate battery to keep your fence energized day and night, covering up to 12 miles of clean fence or 40 acres. Intelligent adaptive energy control automatically adjusts output based on available sunlight, maximizing battery life even during cloudy periods. Two operating modes let you optimize performance for livestock or wildlife control, while the rugged double-glazed solar panel and protective enclosure withstand extreme temperatures. Lightweight and easy to move with an integrated carry handle, it's ideal for strip grazing and rotational pasture management. Everything you need is included—simply mount on a post, connect your fence and ground leads, and you're ready to go. Backed by a 3-year warranty and delivering 0.2 stored joules with 9.3kV maximum output.

G350404

Solar Lithium Technology 

• Advanced lithium iron phosphate battery paired with a high-efficiency solar panel deliver superior, uninterrupted operation with maximum output voltage of 9.3kV. Fully protected by a comprehensive three-year warranty.

Faster charging, long-lasting battery performance 

• The internal heavy-duty lithium battery and highly efficient 3.8W solar panel work in tandem to deliver dependable, round-the-clock power to your fence line, ensuring consistent performance in all conditions.

Intelligent adaptive energy control 

• Intelligent adaptive electronics continuously track incoming solar energy and battery voltage, automatically fine-tuning output to maximize fence power duration—even when clouds block the sun.

Protected circuitry and battery longevity 

• The patented double-glazed solar panel and durable plastic housing shield all internal components and lithium batteries from temperature extremes, ensuring long-term reliability in harsh farm conditions.

Suitable for wildlife exclusion 

• Wildlife exclusion mode delivers continuous fast pulses around the clock to reliably deter predators and unwanted animals from your property.

  Livestock mode optimizes battery efficiency with rapid daytime pulses to maintain containment when animals are grazing, then switches to gentler nighttime pulses when activity decreases.

Portable power - designed to be easily moved around the farm 

• Compact and lightweight with an integrated carry handle, the S20 moves effortlessly between paddocks, making it the perfect choice for dynamic grazing systems and flexible pasture rotation.

Fence and Energizer performance at a glance 

• Status LEDs provide at-a-glance visibility of battery charge levels, alerting you when power is running low so you can plan maintenance before fence performance drops.

Fully integrated, ready to use 

• Installation is straightforward—mount the unit on any post, attach your fence and ground leads, and you're operational. The package includes everything needed: fence lead, earth lead, rechargeable lithium battery, and integrated solar panel.

Built for farmers who demand dependable, off-grid fencing solutions, the S20 Lithium combines cutting-edge solar technology with intelligent battery management to keep your perimeter secure. The 3.8W solar panel and heavy-duty lithium iron phosphate battery work together seamlessly, powering up to 12 miles of clean fence or 40 acres with a maximum output of 9.3kV. Smart adaptive electronics continuously monitor and optimize energy delivery, ensuring consistent performance even when sunlight is limited. Choose between wildlife exclusion mode—fast pulses around the clock—or livestock mode with day-fast, night-slow pulses for efficient animal management. The patented double-glazed solar panel and protective enclosure shield all components from extreme weather, while the lightweight, portable design with integrated carry handle makes it perfect for rotational grazing. Everything arrives ready to install: just mount, connect your fence and ground leads, and start protecting your property. Three-year warranty included.