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The best electric fence charger for most farms is the Patriot PMX200, a plug-in unit rated at 2 output joules and up to 50 miles that sells for $136.99 at Jeffers. That works out to $68.50 per output joule, the lowest of the six chargers here. For goats in electric netting, the Premier 1 Solar IntelliShock 100 is the better buy, because it runs off grid and Premier rates it for 8 to 10 rolls of net. All prices were checked October 18, 2026.
I spent childhood summers on a Midwest farm walking fence lines, and the weak spot always turned up at the far corner. That was where weeds leaned on the bottom wire and the ground went hard by late summer. So I ignore the miles printed on the box. I shop by output joules, then size up for the weediest stretch on the place.
The picks
- Best overall: Patriot PMX200. Plug-in, 2 output joules, 50-mile rating, $136.99 at Jeffers.
- Best for goats and solar: Premier 1 Solar IntelliShock 100. 1.0 output joule, 15-watt panel, $334.00 per Premier 1.
- Best plug-in warranty: Zareba 50-Mile AC Low Impedance (EAC50M-Z). 2 output joules, $219.99 per Zareba.
- Best for horses and small paddocks: Gallagher M120. 0.48 output joules, $134.99 per Gallagher.
- Best battery charger: Patriot PBX120. 1.2 output joules on a 12-volt battery, $249.99 at Jeffers.
- Best portable solar: Gallagher S20. Lithium battery included, $291.49 at Jeffers.
Best Electric Fence Charger for the Money
The Patriot PMX200 gives the most fence power per dollar at $68.50 per output joule, and the Gallagher S20 gives the least. The table divides each price by the maker’s output joule rating. A joule is a unit of energy. Output joules are what leaves the charger with each pulse, while stored joules, the bigger number some boxes print, are what sits inside before losses. Prices were checked October 18, 2026.
| Charger | Price | Output joules | Price per output joule | Maker’s rating | Warranty |
|---|---|---|---|---|---|
| Patriot PMX200 (plug-in) | $136.99 at Jeffers | 2 | $68.50 | 50 miles / 165 acres | 2 years |
| Zareba EAC50M-Z (plug-in) | $219.99 per Zareba | 2 | $110.00 | 50 miles, steel wire, no weeds | 3 years if registered |
| Patriot PBX120 (battery) | $249.99 at Jeffers | 1.2 | $208.33 | 30 miles / 100 acres | 2 years |
| Gallagher M120 (plug-in) | $134.99 per Gallagher | 0.48 | $281.23 | 15 miles, clean fence | 3 years |
| Premier 1 Solar IntelliShock 100 (solar) | $334.00 per Premier 1 | 1.0 | $334.00 | 2 miles of 3-strand cattle fence | 3 years |
| Gallagher S20 (solar) | $291.49 at Jeffers | 0.15 | $1,943.27 | 12 miles ideal, 2 miles recommended | 3 years |
Read the rating column with care. Zareba’s own chart cuts its 50-mile steel-wire figure to 25 miles in light weeds and 12 in heavy weeds. Polywire, the plastic rope with thin metal strands woven through it, gets half of each number. Gallagher’s M120 drops from 15 miles on a clean fence to 6 on a typical one. The solar units cost more per joule because part of the price buys a panel and battery storage.
How Many Joules Electric Fence for Goats, Horses and Cows?
Start at one output joule per mile of fence, the rule of thumb in University of Tennessee Extension’s copy of Electric Fencing for Serious Graziers, then size up for heavy weeds. The animal changes the voltage you want on the wire more than the joules. Virginia Tech’s extension guide says a fence should hold at least 5,000 volts even in dry weather. It also reports producers running 3,000 to 5,000 volts for cattle and 7,000 for sheep.
Premier 1’s energizer FAQ ranks animals from most to least affected by a shock. Pigs come first, then horses, cattle and canines. Sheep, goats and deer sit near the bottom. The table pairs that ranking with the guides and the chargers above.
| Animal | Rank on Premier 1’s list | What the guides say | Charger from this list |
|---|---|---|---|
| Horses | 2nd most affected | Hot wires at 28 and 38 inches on a 3-wire fence (Virginia Tech) | Gallagher M120 for a paddock; Patriot PMX200 for pasture |
| Cattle | 3rd | 3,000 to 5,000 volts; at least 5,000 during training (Virginia Tech) | Patriot PMX200 or Zareba EAC50M-Z |
| Dogs | 4th (canines) | Premier markets the IntelliShock 100 against stray dogs | Gallagher M120 near an outlet |
| Goats | 7th | 4 hot wires at 6, 16, 26 and 36 inches (Virginia Tech) | Premier 1 Solar IntelliShock 100 |
| Deer | 8th | Zareba lists deer for the EAC50M-Z | Zareba EAC50M-Z or IntelliShock 100 |
| Bears, coyotes | not ranked | Premier markets the IntelliShock 100 against both | Premier 1 Solar IntelliShock 100 |
The pattern is plain. Goats and deer barely flinch compared with a horse, so they need more voltage and more hot wires low to the ground. That low wire is also where grass steals power.
Best Electric Fence Charger for Cattle
I have always kept a charger under a roof and close to the barn outlet, and a plug-in set up that way is the least fussy fence power I know. The Patriot PMX200 wins for cattle because it puts 2 output joules on the wire for $136.99 at Jeffers. Patriot’s comparison chart lists 3 stored joules and up to 50 miles or 165 acres. Jeffers lists a 2-year full replacement warranty.
Now apply the extension rule. At one joule per mile, 2 joules covers about 2 miles of working fence, not 50. That gap is the fine print every box carries: the big number assumes one clean wire. Two miles still splits a pasture into several paddocks. For more ground, Patriot’s chart steps up to the PMX350 at 3.5 output joules.
Zareba 50 Mile Low Impedance Fence Charger
The Zareba EAC50M-Z matches the Patriot at 2 output joules but costs $219.99 on Zareba’s site. The extra $83 buys coverage. Zareba’s spec table promises a 3-year warranty if you register within 30 days, and the listing says lightning damage is covered. Low impedance means the charger pushes a short, strong pulse that holds up when green weeds touch the wire, per Premier 1’s energizer FAQ. Zareba lists bulls, cattle, deer, exotics, goats, horses, pigs and predators as targets. It plugs into a standard 115-volt outlet.
Best Electric Fence Charger for Horses
The Gallagher M120 is the pick for horses on a small paddock, with 0.48 output joules and 1.2 stored joules for $134.99, Gallagher’s suggested price. Gallagher rates it at 15 miles or 60 acres on a clean fence and 6 miles on a typical one. It carries a 3-year warranty and a built-in lightning diverter.
I have seen horses meet a hot wire for the first time, and the jump back is usually the only lesson they need. That fits Premier 1’s ranking, which puts horses second only to pigs. So for horses the fence layout matters more than charger size. Virginia Tech’s guide sets hot wires at 28 and 38 inches on a three-wire horse fence. On a big pasture, step up to the Patriot PMX200 instead.
Best Electric Fence Charger for Goats
The Premier 1 Solar IntelliShock 100 is the goat pick because Premier rates it for 8 to 10 rolls of 164-foot sheep and goat netting. It lists at $334.00 on Premier’s site, with 1.0 output joule, 1.2 stored joules and a 15-watt monocrystalline panel. Power comes from a 12-volt, 15 amp-hour sealed lead acid battery. Premier also sells that battery alone for $42.00.
The 3-year warranty covers lightning damage on the energizer and panel, but batteries get 30 days. Premier estimates three to four years of battery life if you never drain it past 40 percent. Goats rank seventh on Premier’s list, below cattle and sheep. Netting also runs its bottom strand a few inches off the ground, right where grass grows into it. Buy more charger than the fence length suggests, and keep a mowed strip under the net.
Solar vs Plug In Fence Chargers
A plug-in charger costs less per joule and less to run, while a solar charger goes where the outlet does not. Premier 1 estimates its Kube 4000 plug-in costs about $2.50 a year to run. By contrast, it puts battery replacement on a typical farm-store solar unit at about $12 a year. Premier adds that solar units usually pulse less often and that battery capability drops in winter. In the far northern US, it advises charging batteries externally.
In practice, plug in wherever a barn or shed outlet sits within reach of the fence. Then use solar or battery for back pastures and rotational paddocks that move.
Patriot PBX120 Battery Fence Charger
The Patriot PBX120 costs $249.99 at Jeffers and runs on a 12-volt deep cycle marine battery, the type Jeffers recommends. Patriot’s chart lists 1.2 output joules, 1.7 stored joules and up to 30 miles or 100 acres. Jeffers lists a 2-year full warranty. It is also solar compatible, so a panel can go on later. Pick it for a back pasture with no power and a battery you can swap on a schedule.
Gallagher S20 Solar Fence Charger
The Gallagher S20 costs the most per joule here, $291.49 at Jeffers for 0.15 output joules. Still, it earns a spot for portability. It comes with a lithium iron phosphate battery, so there is no lead-acid box to haul. Jeffers’ listing gives 12 miles in ideal conditions, but Gallagher’s own recommendation is 2 miles of multiwire fence. Warranty is 3 years. Use it for a strip-grazing wire or a garden, not a perimeter.
Best Electric Fence Charger for Dogs
For a dog yard near an outlet, the Gallagher M120 is the sensible plug-in, because its 0.48-joule pulse is small and canines rank fourth on Premier 1’s list. That puts dogs ahead of sheep and goats in how hard a shock lands. A livestock charger is a different tool from a buried pet-containment system, so read the maker’s manual on what the unit is rated for.
The more common job is keeping dogs out. Premier markets the IntelliShock 100 against stray dogs and coyotes, which suits a goat or chicken pen. Mount any charger out of a dog’s reach and install it per the manual. If the worry is a dog that roams, a fence is half the answer; our guide to GPS dog trackers and collars covers the other half.
Best Electric Fence Charger for Deer
For deer, pick the Zareba EAC50M-Z near an outlet or the Premier 1 Solar IntelliShock 100 out in a garden. Deer rank eighth on Premier 1’s list, below goats, so a deer fence needs a strong pulse and a wire they will touch with a nose. Zareba lists deer among the EAC50M-Z’s targets. Premier says the IntelliShock 100 can help keep deer, raccoons and rabbits out of gardens, and it also markets the unit against bears and foxes. Near the barn, the Zareba’s 2 joules cost less than the Premier’s 1.0.
How to Ground an Electric Fence Charger
Drive at least 3 feet of ground rod per output joule, per the Tennessee guide, so the 2-joule Patriot PMX200 needs 6 feet of rod at minimum. That guide also calls for rods at least half an inch thick, spaced 10 feet apart. Keep them 65 feet from any utility ground rods. Premier 1 adds that low impedance chargers need plenty of ground rods to perform.
After that, test at the far end of the fence, not next to the charger. Dry ground is the usual culprit when the far corner reads low, and more rod is the usual fix. Pull a pair from our farm work gloves roundup before you drive rods and twist wire. Above all, every charger here should be a listed unit, installed and grounded per its own manual. Follow that manual over any rule of thumb, this one included.
Skip any charger sold on miles alone. A 50-mile box rating is measured on one clean wire, and both Zareba’s and Gallagher’s own fine print cut that figure sharply once weeds or extra wires enter the picture. Skip shopping by stored joules too, since the output figure is what reaches the fence. And if a listing still shows the Premier 1 Solar IntelliShock 60, pass, because Premier marks it discontinued.
Frequently asked questions about the best electric fence charger
How many joules do I need for 1 mile of fence?
About one output joule per mile, per the Tennessee extension guide. Size up for heavy weeds or several hot wires.
Do weeds drain an electric fence?
Yes. Green weeds touching the wire leak current to the ground, and the Tennessee guide says to buy a bigger charger for a high weed load. Premier 1 says low impedance units cope best with weeds near the ground. Mow a strip under the line, and if clearing brush leaves a woodpile, see our log splitters for firewood season.
Can a solar fence charger work in winter?
Yes, with less margin. Premier 1 says battery capability drops in winter and advises charging batteries externally in the far northern US.
What is the difference between stored and output joules?
Stored joules are the energy held inside the charger, and output joules are what reaches the fence. Premier 1 says the number on the box is an optimum peak and real output is usually lower, so compare chargers on output joules.
Published October 21, 2026.
Prices are approximate, current as of publication, and change frequently — confirm the latest price with the retailer before buying.
