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

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 is engineered for livestock farmers who require consistent, low-maintenance fence performance in remote or rotational grazing systems. Combining a high-efficiency solar panel with a robust lithium iron phosphate (LiFePO4) battery, it delivers dependable, continuous output—powering up to 12 miles of clean fence or 40 acres with a peak voltage of 9.3kV and 0.2 stored joules.

G350404

Solar Lithium Technology
A high-performance lithium iron phosphate battery paired with an efficient solar panel delivers reliable, uninterrupted fence power with up to 9.3kV output. Backed by a full three-year warranty for added peace of mind.

Faster Charging, Long-Lasting Battery Performance
The durable internal lithium battery and 3.8W solar panel work together to provide steady, round-the-clock energy, keeping your fence performing in both sunny and overcast conditions.

Intelligent Adaptive Energy Control
Advanced electronics continuously monitor solar input and battery levels, automatically adjusting output to extend run time and maintain consistent fence voltage—even during low sunlight.

Rugged Protection for Long-Term Reliability
A patented double-glazed solar panel and tough, weather-resistant housing protect internal components from extreme temperatures and harsh farm environments.

Flexible Operating Modes for Any Situation
Wildlife exclusion mode delivers fast, continuous pulses to deter predators and pests. Livestock mode optimizes efficiency with rapid daytime pulses and slower nighttime output when animal activity drops.

Portable Power for Rotational Grazing
Lightweight and compact with an integrated carry handle, the S20 is easy to move between paddocks—ideal for rotational grazing and temporary fencing setups.

Quick Status at a Glance
Built-in LED indicators display battery levels, so you always know when power is running low and can act before performance is affected.

Fully Integrated and Ready to Use
Simple installation—just mount to a post, connect fence and ground leads, and you’re up and running. Includes fence lead, earth lead, rechargeable lithium battery, and integrated solar panel for a complete, ready-to-go solution.

Built for farmers who need reliable, off-grid performance, the S20 Lithium delivers consistent fence power without compromise. Its high-efficiency 3.8W solar panel and rugged lithium iron phosphate battery work together to energize up to 12 miles of clean fence or 40 acres, delivering a strong 9.3kV output.

Smart adaptive electronics automatically adjust energy use based on conditions, maintaining dependable performance even during low sunlight. Choose the mode that fits your operation: continuous fast pulses for effective wildlife exclusion, or livestock mode with day-fast and night-slow pulsing for efficient herd control.

Engineered for durability, the patented double-glazed solar panel and sealed enclosure protect internal components from harsh weather. The lightweight design and built-in carry handle make it easy to move for rotational grazing or temporary fencing setups.

Ready right out of the box, installation is simple—just mount, connect, and power your fence. Backed by a three-year warranty, the S20 Lithium gives you confidence your fence will perform when it matters most.