Gallagher Solar Fence Energizer S20

Marsoni

M251S

$181.54

Get it in 3 business days with 1 day shipping. Friday, May 29

Gallagher Solar Fence Energizer S20The S20 portable solar energizer powers up to 12 miles 40 acres of single wire fence with no vegetation and boasts several solar technology improvements that make it ideal for temporary grazing applications, livestock and pet containment. The S20 is quick and easy to install and convenient to transport. This robust and highly portable unit makes a great alternative to battery powered systems. Works for up to 3 weeks without sun and is capable to power

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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This relay has experienced failure again after just a couple of months of use. It's not the mag coil that fails but rather the contacts are of such low quality that they corrode beyond their ability to conduct power, and fast. I have had to change two of these so far and am on the third one. The seller will ship replacements but who wants to keep replacing them? I have to travel in my RV with a spare. This relay has never been exposed to the elements. It's safely mounted inside a sealed bay. Be aware of any brands that look like this, they are all the same.

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Reviewed in the United States on November 15, 2025

Verified Purchase

Dave Kulina

Alexandria, US

★★★★★ 5

Works great

I added extra batteries to run a truck camper without killing my main battery and this works great. Simple to install and i have no had any problems in the pay few months and i use it every single day

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Reviewed in the United States on April 18, 2021

Verified Purchase

Amazon Customer

San Leandro, US

★★★★★ 5

Installed in my RV.

This product works well. It is somewhat difficult to mount. The contact points are a little too close together. These deficiencies are understandable given its low cost and small size.

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Reviewed in the United States on January 18, 2021

Verified Purchase

Bret Jackson

Lowell, US

★★★★★ 5

Best main wire for price

Size: 25 FT, Style: 0 (1/0) AWG RED

Good main wire and is accurate size and length

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Reviewed in the United States on May 18, 2026

Verified Purchase