This battery energizer powers up to 60 acres / 15 miles of single wire fencing. Gallagher recommends that you use a 12-volt deep cycle battery with this energizer. 

Clean Fence: 15 miles / 60 acres​
Typical Fence:​ 5 miles​ / 40 acres
Stored Energy: 0.6 Stored Joules​​​​

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• ​​Compact and portable design
• Fence indicator flashes with each energizer pulse
• Suitable for outdoor use
• ​​​Use with a 12-volt, deep-cycle battery
• Battery not included