Best Electric Fence Chargers for Winter: AC, Solar, and Frozen-Ground Setup
Delivered joules, then power source, then the ground system. That order matters more in a freeze than the mile number on the box. Cold cuts battery capacity and shortens solar days. Frozen, dry, or rocky soil raises the resistance of the return path, so a strong energizer can still feel weak to a cow. An outlet within reach points to AC. A remote paddock points to a 12 V battery, with solar only when the fence is short enough for the panel and the battery reserve the maker actually prints.
Criteria, in order: output or delivered joules; livestock the maker lists; vegetation load; AC versus 12 V battery versus integrated solar; winter battery reserve; a ground system that still works when the soil freezes; and a listing you can buy. OEM list and RRP figures below were rechecked on the Gallagher, Zareba, Parmak, and Patriot pages on 2026-10-05. Confirm the listing you buy.
Shortlist. Re-check the live OEM page and the Amazon listing before purchase.
- Best overall AC (permanent fence, outlet nearby): Gallagher M1100, the current US mains unit in the old M1200i band. Gallagher’s US shop lists 11 stored joules, 7.7 output joules, 110 clean miles, and 36 typical miles.
- Best high-output AC: Zareba EAC200M-Z. The current page rates 15 output joules and publishes a weed-condition distance table. The list price on that page is $599.99. A Home Depot or Tractor Supply price for this model was not readable on 2026-10-05.
- Best remote 12 V: Parmak Magnum 12, model MAG12UO. Battery charger. Joules low 1.1, joules high 3.1+, 30-mile rating.
- Best integrated solar for a short winter fence: Gallagher S120 Lithium. Peer for a longer remote solar fence: Parmak Magnum Solar-Pak 12. The older Gallagher S100 is a lead-acid solar peer if that listing is still live.
- Best budget temporary: Patriot PE10B class, for a strip or a winter paddock inside a physical perimeter.
Freeze water is a separate purchase. The same cold snap that exposes a weak fence also ices the tank: use the stock tank heaters guide for watts and plastic-safe de-icers. The farm tools hub indexes the rest of this vertical.
An earlier version of this page (updated April 2026) listed the Gallagher M1200i at 7.2 delivered joules, 150 miles, and $300–$400; the Zareba EAC200M-Z at 20 stored / 6.4 delivered joules and $150–$200; the Parmak Magnum 12 at 1.95 stored / 0.7 delivered joules; the Patriot PE10B at 1.0 stored / 0.35 delivered joules; and the Gallagher S100 at 0.5 delivered joules, 15 miles, 21 days without sun, and $120–$170. Those figures are not on the manufacturer pages checked on 2026-10-05. The numbers below replace them. Named-charger buttons go to the verified Amazon listing. Accessory buttons stay category searches. Sitewide affiliate disclosure is in the footer.
Key Specs: Stored vs Delivered Joules, Miles, Livestock
Stored joules and output joules
Stored joules are the energy in the capacitor before the pulse. Output joules (delivered joules) are what the energizer puts on the wire. Gallagher prints both, and the output number is smaller. On the US M1100 page the pair is 11 stored and 7.7 output. On the S120 Lithium page it is 1.2 stored and 0.94 output.
Zareba’s EAC200M-Z page publishes one energy figure: 15 output joules. It does not publish stored joules. A retailer listing that pairs “20 stored” with a different output number is not the Zareba page.
Parmak prints “Joules Low” and “Joules High” (1.1 and 3.1+ on both the Magnum 12UO and the Solar-Pak 12). The product pages do not label those as stored and delivered. Compare them as Parmak’s own pair. The asterisk on “3.1+ joules*” is not defined in the text fetched from those pages.
A charger with a large stored number and a small output number is a weaker fence than the stored number suggests. Use the output figure when the maker prints one.
Miles of fence
Mile ratings describe a clean fence. Zareba says so in the distance table and then cuts the number as weeds increase. Gallagher prints a clean-wire distance and a shorter “typical fence” distance on the same card. Plan from the shorter number when the maker gives you one.
| Maker’s own distance cut | Clean / no weeds | With vegetation or “typical” |
|---|---|---|
| Zareba EAC200M-Z, steel wire | 200 miles | 100 miles light weeds; 50 miles heavy weeds |
| Zareba EAC200M-Z, polywire | 100 miles | 50 miles light; 25 miles heavy |
| Gallagher M1100 | 110 miles clean | 36 miles typical |
| Gallagher S120 Lithium, multiwire | 35 miles ideal conditions | 10 miles Gallagher recommendation |
| Parmak Magnum 12 and Solar-Pak 12 | 30 miles on the product page | No weed-condition split published |
There is no joule-per-mile constant on the pages checked for this refresh. Doubling the box miles, or budgeting a fraction of a joule per wire-mile, would be a guess. Use the maker’s clean-versus-typical or clean-versus-weeds table, then confirm with a fence tester after the fence is up.
Livestock
These makers name animals. They do not publish a shared “minimum delivered joules by species” table, and this page will not invent one.
| Charger | Output figure on the current page | Animals the maker names |
|---|---|---|
| Gallagher M1100 | 7.7 output joules | ”Large pastures.” The card does not print a species list |
| Zareba EAC200M-Z | 15 output joules | Bulls, cattle, horses, goats, sheep, pigs, exotics, predators |
| Parmak Magnum 12UO | 1.1 low / 3.1+ high | Cattle, horse, goat, sheep, pig, dog, deer, bear, predator |
| Gallagher S120 Lithium | 0.94 output joules | Livestock mode and wildlife mode. No species joule table |
| Patriot PE10B | 0.3 peak output joules | Seller text lists cow, horse, pig, dog, rabbit, squirrel, chicken. A separate retail listing marks cattle “no.” Verify |
Wool, hair, and a heavy hide change how a pulse feels. That is a reason to read the animal list and the output joules together. It is not a reason to adopt an unsourced joule minimum. Poultry netting is a different system: see Who This Is NOT For.
Winter Power: AC vs Battery vs Solar When It’s Cold
Power source is mostly a site constraint. Winter changes which constraint bites.
AC (120 V plug-in) is the winter default when a sheltered outlet already exists. The energizer is not drawing its pulse from a battery sitting in the cold, so a drop in lead-acid capacity does not cut the joules. Gallagher’s M1100 and Zareba’s EAC200M-Z are the AC pair here. Both want a sheltered mount. Zareba’s page says to place the charger in a secure location that protects it and the outlet from severe weather. Running a new circuit to a remote paddock is an electrician’s job. This page does not describe breaker sizes, wire gauges, or trench depths.
12 V deep-cycle, charged from a separate source, is the remote option. Parmak’s Magnum 12UO runs on a 12 V storage battery. The product page says the charger provides up to three months of continuous operation between charges. It does not say at what temperature, at what battery capacity, or at what fence load. It also does not publish milliamp draw or a solar-panel wattage. An earlier draft of this article used 120 mA and a 100 Ah “30-day” example. Those figures are not on the current MAG12UO page, so they are withdrawn. Shelter the battery, keep it charged, and size extra capacity for cold. Neither Parmak nor Gallagher published a cold-capacity percentage for this charger on the pages checked. Lead-acid available capacity falls as the battery gets colder. The page will not print a percent-loss figure it has not verified.
Integrated solar carries the panel and the battery in one box. It fits a short, remote fence that nobody visits daily. It does not fit a long, weedy cattle perimeter just because the word “solar” is on the carton.
On the Gallagher S120 Lithium, the US shop lists a lithium iron phosphate battery, a 12 W panel, 1.2 stored joules, and 0.94 output joules. Two modes slow the pulse at night (livestock) or cut power to save the battery (wildlife). Adaptive control reduces pulse interval and voltage once state of charge drops below 30 percent, which is how Gallagher describes staying up “even in the absence of sunlight.” The page does not publish days of reserve. The warranty is three years, including the battery. The enclosure line is specific: a dual-insulated plastic case “protects internal circuitry and lithium batteries from extreme temperatures.” That sentence is not a measured claim that this chemistry holds more capacity at a given temperature than a lead-acid battery. Gallagher does not print a minimum operating temperature on that page.
The post mount is meant to keep the energizer off the ground, out of rising water, and clear of grass that would shade the panel. Snow and ice on the glass shade it the same way. Clear the panel. Gallagher does not print a tilt angle. In the northern hemisphere a south-facing exposure puts more winter sun on a fixed panel. The manual is the install spec.
Parmak Solar-Pak 12 is the higher-output integrated peer: same 1.1 / 3.1+ joule pair and 30-mile rating as the Magnum 12, with the panel and a sealed 12 V battery in the case. Parmak warrants the charger for three years and the battery for one year, and it calls the unit 100 percent American made. The OEM page does not publish days without sun. Retailer “14 days” lines are not repeated here.
Gallagher S100 is the lead-acid solar predecessor. An indexed US shop card listed 1 stored joule, 0.73 output joules, 30 clean miles, 8 typical miles, and a US RRP of $529.99. A later request for that URL returned 404, so treat S100 availability as unverified. The 2021 international manual lists 0.74 J output and a 12 V 7 Ah sealed lead-acid battery. It is not the winter solar hero on this refresh.
Battery-only, no panel, matches a temporary winter paddock or a strip inside a permanent perimeter, where someone can swap or recharge a battery. The Patriot PE10B is that class. A psychological fence still needs a physical perimeter. Animals that have not learned the wire will walk through a temporary strand whether or not the charger is adequate.
Commercial mains units on Gallagher’s US category page — the M5800i at 58 joules (RRP $2,829.99) and the M10000i at 100 joules (RRP $4,279.99) — are the wrong default for a small farm. The M1500 (15 stored joules, RRP $849.99) is a step up from the M1100, still on the same shop, and still not this shortlist. More joules do not repair a frozen return path.
Grounding in Frozen, Dry, or Rocky Soil
The fence circuit is the wire, the animal, and the soil back to the ground rods. Parmak’s 2025 installation manual states the failure directly: in dry or frozen conditions you cannot rely on the earth to return the shock current to the ground rod. A charger upgrade does not pour conductivity back into frozen ground.
Rods. Follow the manual for the brand you install. The two checked manuals do not use the same numbers, so this page will not average them into a house rule.
Parmak’s low-impedance section recommends three 8-foot ground rods, 10 feet apart, driven into permanently moist earth. Rods elsewhere in the same manual are 6 to 8 feet, galvanized steel or copper, 3/8 to 5/8 inch. The first rod goes within 20 feet of the charger. Sandy, rocky, or clay soil may need more rods; the manual says some locations need five or six. Where rock stops a vertical rod, Parmak describes driving four or five rods at 45 degrees, like wheel spokes, and tying them together. Dry or frozen soil is called out as a condition that can reduce or eliminate grounding.
Gallagher’s earthing guidance uses galvanized stakes, a minimum of three, and a planning figure of one stake for every five joules of stored energy. The same guidance puts “up to 15 joules” at a three-stake minimum, which covers the M1100 at 11 stored joules. The 4-3-2-1 rule in that text is 4 metres between stakes, 3 stakes minimum, 2 metres minimum stake length, and 1 connecting wire. For year-round dry, frozen, or snow conditions, Gallagher says to add an earth-return wire rather than depending on the soil alone.
An older line that “the Gallagher rule is 3 feet of ground rod per joule” does not match that guidance. One stake per five stored joules, with a floor of three, is the figure Gallagher prints. Extra rods in dry, rocky, or frozen soil are the next step both manuals describe. They are not a license to invent a rod count for a specific farm from this page.
Hot and ground wires. Parmak’s manual, for dry or frozen conditions, describes a multi-wire fence with alternate wires charged and grounded. The animal has to touch a hot wire and a grounded wire. If stock reach under the bottom wire, that bottom wire is one of the charged wires. Extra ground rods tie to the grounded wire along the run; Parmak’s spacing in that section is every quarter mile. That is how the return path travels on the fence when the soil will not carry it.
Where to drive them. Permanently moist soil beats a convenient dry knoll. Parmak says to move the rod if the earth around it is too dry. A winter version of the same idea: put the rods where the soil stays moist, including a spot that holds snow cover instead of a windswept bare ridge. Additional rods are the fix when the return path is the failure. A larger energizer is the fix when a tester shows the ground is adequate and the fence voltage is still low.
Test. Use a digital fence tester, and use the threshold in the manual you are following. Parmak: short the fence with a bare metal rod, then measure between the ground rod and a probe about 6 feet away. Above 500 volts, add a rod and test again. Gallagher’s documented procedure shorts the fence at least 100 metres (about 330 feet) out, pulls fence voltage down to 2,000 volts or less, and treats an earth reading up to 200 volts as acceptable. Those are different tests. Quoting 400 volts as a universal pass line mixes them. Insulated fence cable, not the fence wire itself, is what Parmak specifies for the lead from an indoor energizer out to the rods.
Lightning protection is separate from the animal ground. Zareba includes a Storm Guard with the EAC200M-Z. Gallagher’s M1100 page cites a built-in lightning diverter, and the S120 page cites built-in lightning protection. An external diverter on the lead-out is still a standard accessory. Install it the way the diverter sheet says. This page does not walk through a service install.
Top Electric Fence Chargers
Gallagher M1100 (M1200i class) — Best overall AC
| Specification | Value on the page checked |
|---|---|
| Power source | AC mains |
| Stored joules | 11 |
| Output joules | 7.7 |
| Distance | 110 miles clean / 36 miles typical; 650 acres on the clean card |
| Livestock | Large pastures. No species list on the card |
| Other | Built-in lightning diverter; quickscan voltage bar graph; 11 W average |
| Warranty | 3 years |
| Price | US RRP $649.99 on the Gallagher shop. Farmers Cooperative of Farmville listed G324504 at $499.99, available, on 2026-10-05 |
The US Gallagher 110 V category checked on 2026-10-05 does not list an M1200i. The current mains unit in that stored-joule band is the M1100 (G324504). Gallagher describes added power reserve that raises voltage when fence conditions change, which is the feature to read against winter vegetation and a long lead. The typical-fence rating of 36 miles is the planning number. The 110-mile figure is the clean-wire rating.
A Gallagher Ireland listing indexed the same day still described an M1200i at 12 stored joules and 6.6 output joules, with 30 miles of multi-wire and a 120-acre property size. A direct fetch of that URL failed, and a New Zealand retailer marks the i Series M1200i discontinued while quoting both 12 J and 11 J. For a US purchase, the M1100 is the verifiable SKU. Search Amazon for the M1100, and search the M1200i name only to see whether an older unit is still offered. Read the joules on that listing before treating it as the Ireland card or the M1100. Gallagher’s US shop RRP is still $649.99. Farmers Cooperative of Farmville listed the same part, G324504, at $499.99 and marked it available on 2026-10-05. That is one dealer price, not a national average.
Best for: A permanent small-farm or multi-paddock fence with an outlet, where you want Gallagher’s clean-versus-typical split and an on-box voltage reading. Confirm the live shop page before paying RRP.
Check Gallagher M1100 on Amazon
Zareba EAC200M-Z — Best mid-range AC
| Specification | Value on the page checked |
|---|---|
| Power source | 115 V AC |
| Stored joules | Not published |
| Output joules | 15 |
| Distance | Steel: 200 / 100 / 50 miles (no / light / heavy weeds). Polywire: 100 / 50 / 25 |
| Livestock | Bulls, cattle, horses, goats, sheep, pigs, exotics, predators |
| Other | Fence OK light; Storm Guard included; UL listed; built in the USA |
| Warranty | 3-year limited if registered within 30 days |
| Price | List $599.99 on zarebasystems.com, rechecked 2026-10-05. No separate big-box price confirmed |
Fifteen output joules is the highest output figure in this AC pair, above the M1100’s 7.7. Zareba’s list is $599.99 against a $649.99 Gallagher RRP. The Farmville dealer price on the M1100 was $499.99, so the Zareba list is not automatically the cheaper AC unit. A Zareba price on Home Depot or Tractor Supply was not confirmed on 2026-10-05. Confirm the listing in front of you before calling either one the value buy. Zareba’s own table is the vegetation correction: heavy weeds cut the steel-wire rating from 200 miles to 50. The cabinet is described as protection from weather extremes, and the install text still says to mount it in a sheltered spot near the outlet.
Best for: A permanent fence that needs the higher published output and a maker-printed weed derate, after you confirm the street price against the M1100.
Check Zareba EAC200M-Z on Amazon
Parmak Magnum 12 (MAG12UO) — Best battery remote
| Specification | Value on the page checked |
|---|---|
| Power source | 12 V battery (battery not included; clamps included) |
| Joules | 1.1 low / 3.1+ high. Not labeled stored vs delivered |
| Distance | 30 miles |
| Livestock | Cattle, horse, goat, sheep, pig, dog, deer, bear, predator |
| Other | Analog performance meter for fence and battery; UL listed; indoor or outdoor |
| Warranty | 3 years |
| Price | List $148.99 on parmakusa.com, rechecked 2026-10-05 |
Parmak calls this a low-impedance battery fencer for medium to large pastures and says it shocks through wet weeds and brush. The three-month run between charges is the claim on the page. It is not a cold-weather test, and it is not a solar-panel specification. The integrated solar sibling is the Solar-Pak 12 below. Use a solar panel on a MAG12UO only if the manual packed with that unit says the charger accepts one.
The Magnum 12 page fetched for this refresh does not say “made in the USA.” The Solar-Pak 12 page does. Keep those claims on the models that print them.
Best for: A remote fence with no AC, where someone can maintain a 12 V battery and the 30-mile rating is read as clean-fence marketing.
Check Parmak Magnum 12 on Amazon
Gallagher S120 Lithium — Best short-fence winter solar
| Specification | Value on the page checked |
|---|---|
| Power source | Integrated 12 W solar panel and internal lithium iron phosphate battery |
| Stored / output joules | 1.2 / 0.94 |
| Distance | 10 miles multiwire recommended; 35 miles ideal conditions; 120 acres on the card |
| Winter note | Adaptive output below 30% charge; enclosure stated to protect the battery from extreme temperatures; no days-without-sun figure |
| Warranty | 3 years, including the battery |
| Price | US RRP $549.99 on the Gallagher shop, rechecked 2026-10-05 |
This is the winter solar hero because Gallagher’s US shop actually lists it, the warranty includes the battery, and the page talks about sunless operation and an extreme-temperature enclosure. Output is 0.94 joules. That is a short, clean fence, in line with the 10-mile recommendation, not a substitute for the Zareba or the M1100.
Peer — Parmak Solar-Pak 12 (MAG12SP). Same joule pair as the Magnum 12 (1.1 low / 3.1+ high), 30-mile rating, outdoor only, sealed 12 V battery included, three-year charger warranty, one-year battery warranty, list $389.99 on parmakusa.com, rechecked 2026-10-05. Choose it over the S120 when the remote fence needs that higher Parmak joule pair and you accept a lead-acid-style sealed battery with a shorter battery warranty. Choose the S120 when the fence fits 0.94 output joules and you want the lithium unit Gallagher is selling in the US, with the battery inside the three-year warranty. Neither page prints a proven “days without sun” count.
Best for: A short remote fence or a rotational paddock you can mount in the sun and keep clear of snow. A long cattle perimeter with heavy weeds belongs on AC or on the Magnum 12 class after you read the joules.
Check Gallagher S120 Lithium on Amazon
Check Parmak Solar-Pak 12 on Amazon
Patriot PE10B — Best budget temporary
| Specification | Value on the seller page checked |
|---|---|
| Power source | 6 V or 12 V battery |
| Stored / output | Up to 0.49 J peak stored; up to 0.3 J peak output |
| Distance | 10 miles. Technical block says 40 acres. The page title also says 240 acre — those conflict |
| Current | 36 mA |
| Warranty | 1 year including lightning on patriotchargers.com; 2 years including lightning on patriotglobal.com. Verify |
| Price | $89.99 on patriotchargers.com, rechecked 2026-10-05 |
Peak output of 0.3 joules is a small fence. The seller text lists cow among suitable animals. A big-box listing has marked cattle “no.” Until those agree, use the PE10B for a temporary strip or a training pen with clean wire, inside a physical perimeter, and keep a cattle winter perimeter on one of the chargers above. Battery leads are included. The battery is not.
Best for: A short-term winter paddock or strip-grazing division when the budget is the constraint and someone can recharge the battery.
Comparison
OEM pages for the specs. “Verify” elsewhere on this page means the pages disagree or the figure was not printed. Prices are maker list or RRP rechecked 2026-10-05, plus one M1100 dealer listing. Named-charger cells link to the verified Amazon listing.
| Model class | Power | Stored J | Output / delivered J | Clean-fence miles (optimistic) | Livestock fit | Winter notes | Warranty | Price band | Amazon |
|---|---|---|---|---|---|---|---|---|---|
| Gallagher M1100 (M1200i class) | AC | 11 | 7.7 | 110 clean; 36 typical | Large pastures | Outlet power; cold does not cut a battery that is not in the circuit | 3 years | US RRP $649.99; one dealer $499.99 | Check price |
| Zareba EAC200M-Z | AC | Not published | 15 output | 200 steel, no weeds; 50 steel, heavy weeds | Cattle, bulls, horses, goats, sheep, pigs | Shelter the charger and the outlet | 3 years if registered in 30 days | List $599.99 | Check price |
| Parmak Magnum 12 MAG12UO | 12 V battery | Not labeled | 1.1 low / 3.1+ high (Parmak’s labels) | 30 | Cattle, horses, goats, sheep, pigs | ”Up to three months” between charges, no cold test printed; shelter the battery | 3 years | List $148.99 | Check price |
| Gallagher S120 Lithium | Integrated solar | 1.2 | 0.94 | 35 ideal; 10 recommended | Short livestock or wildlife fence | Clear snow off the panel; output falls below 30% charge; enclosure claim only | 3 years, battery included | US RRP $549.99 | Check price |
| Patriot PE10B | 6 V or 12 V | 0.49 peak | 0.3 peak | 10 (40 acres in the spec block) | Short temporary runs | Recharge or swap the battery; 0.3 J is not a cattle perimeter plan | 1 year or 2 years — verify | $89.99 on the seller page | Check price |
Parmak Solar-Pak 12 sits beside the S120 row: 12 V solar/battery, 1.1 / 3.1+ joules, 30 miles, list $389.99 (rechecked 2026-10-05), three-year charger warranty, one-year battery warranty. It is the higher-output integrated peer, not a sixth hero.
Who This Is NOT For
- Anyone who will not add rods or a hot/ground return, and wants a bigger joule number instead. Frozen or dry soil is the failure. Parmak and Gallagher both describe extra grounding, not a larger box, for that case.
- Arid, sandy, or rocky ground with no plan for more rods or a physical fence. Parmak names sandy, rocky, and clay soil as poor ground. Electric wire alone is a weak plan there.
- A bull, boar, or bottle-raised animal that already walks through hot wire. The chargers above are psychological deterrents. A physical barrier is the containment for an animal that does not respect the pulse.
- Poultry-only netting design. Electrified netting such as Premier 1 PoultryNet is a consumable aside at the bottom of this page. The net, the posts, and the low fence are the poultry system. This URL is the energizer decision.
- A temporary winter paddock with no physical perimeter. Stock have to learn the wire. A PE10B on a single strand is not sole containment.
- A default purchase of a 50-joule-class commercial energizer. Gallagher’s US shop sells those. They are the wrong first buy for a small farm, and they still need the same frozen-ground return path.
- A new electrical service. If the outlet does not exist, hire an electrician or choose a battery charger. This page stops at that fork.
What You’ll Also Need
Winter reliability starts with the return path and a way to measure it. Wire and insulators come after.
- Ground rod kit — 6 ft galvanized, sold as a set. Parmak’s low-impedance text asks for three 8 ft rods; Gallagher’s stake rule starts at three galvanized stakes. A 6 ft galvanized kit is the common Amazon set. Match the length to the manual, and add rods where the soil is dry, rocky, or frozen. Check price on Amazon →
- Digital fence tester. Parmak’s ground test and Gallagher’s earth test both need a fence voltmeter, and they use different pass readings (above 500 V versus up to 200 V). Check price on Amazon →
- Lightning diverter. Use it with the lead-out the way the diverter instructions say. Zareba includes a Storm Guard with the EAC200M-Z; the other chargers here still belong on a protected lead. Check price on Amazon →
- 17-gauge galvanized fence wire, quarter-mile spool. Permanent pasture wire. High-tensile is a different gauge and a different tension system. Check price on Amazon →
- Polytape or polywire. Temporary winter divisions and strip grazing. Zareba’s own table rates polywire at about half the steel-wire distance. Check price on Amazon →
- T-post insulator clips. They keep the hot wire off the post. A bare wire on a steel post is a short. Check price on Amazon →
- Premier 1 PoultryNet-class netting, as an aside. For poultry, and often for sheep or goats, the net is the fence. Pair it with a low-impedance charger the net maker accepts. This is not a second energizer guide. Check price on Amazon →
Posts are a different tool. Driving them is the fence post drivers guide, and frozen ground changes that job too. Weighing stock is livestock scales.
FAQ
What is the best electric fence charger for a small farm?
Match delivered or output joules and the power source to the fence, then ground it for frozen soil. Where a 120 V outlet is within reach, the current US Gallagher mains unit in the old M1200i band is the M1100: 11 stored joules, 7.7 output joules, a clean-fence rating of 110 miles, and a typical-fence rating of 36 miles, at a US RRP of $649.99. Farmers Cooperative of Farmville listed that part at $499.99 on 2026-10-05. That is one dealer price. The Zareba EAC200M-Z publishes 15 output joules and a weed-by-weed distance table, at a list price of $599.99. Remote pasture with no outlet is the Parmak Magnum 12 (MAG12UO), a 12 V battery charger that lists 1.1 low and 3.1+ high joules. A short fence that has to carry its own panel is the Gallagher S120 Lithium (1.2 stored joules, 0.94 output joules). A temporary winter paddock inside a physical perimeter is the Patriot PE10B class at 0.3 output joules. Confirm each listing is still current before buying.
Should I buy AC, battery, or solar?
Buy AC when an outlet already exists. Cold weather does not cut mains output the way it cuts a battery’s available capacity, and the M1100 and the Zareba EAC200M-Z are the AC pair on this page. Buy a 12 V battery charger, the Parmak Magnum 12 class, when the fence is too far from an outlet for a cord and someone can keep that battery charged. Buy an integrated solar unit, the Gallagher S120 Lithium or the Parmak Solar-Pak 12, when the fence is remote and short enough for the published output. The S120 page rates 0.94 output joules and a 10-mile multiwire recommendation. The Solar-Pak 12 lists 1.1 low and 3.1+ high joules and 30 miles. A battery-only Patriot PE10B is for a temporary strip, not a season-long remote perimeter.
Do solar fence chargers work in winter?
They work when the panel still receives sun and the battery still has reserve. Gallagher’s S120 Lithium page says adaptive electronics keep the fence powered in the absence of sunlight, and that pulse interval and voltage drop once battery state of charge falls below 30 percent. That page does not publish a days-without-sun number. It does say a dual-insulated enclosure protects the circuitry and the lithium battery from extreme temperatures. It does not publish a minimum operating temperature or a cold-capacity percentage. Parmak’s Solar-Pak 12 page also does not publish days without sun. Keep the panel clear of snow, ice, and grass. Gallagher’s S120 mount is written to keep grass off the panel. A south-facing exposure helps a fixed panel in a northern-hemisphere winter; the energizer manual is the install spec for tilt.
How do I ground a fence when the ground is frozen?
Frozen soil is a poor return path, so a strong charger can still produce a weak shock. Parmak’s 2025 installation manual says that in dry or frozen conditions you cannot rely on the earth to return shock current, and it describes a multi-wire fence with alternate hot and grounded wires for those conditions. For low-impedance Parmak chargers, that manual recommends three 8-foot ground rods, 10 feet apart, driven into permanently moist earth, and it says sandy, rocky, or clay soil may need more. Its ground test adds another rod when the reading is above 500 volts. Gallagher’s earthing guidance uses a minimum of three galvanized stakes, a planning figure of one stake per five stored joules, and an earth-return wire for year-round dry, frozen, or snow conditions. Gallagher’s documented earth test treats up to 200 volts as acceptable. Follow the manual for the charger you install. This page does not set a rod-per-joule law of its own.
What is the difference between stored and delivered joules?
Stored joules are the energy the energizer holds before the pulse. Delivered joules, also called output joules, are the energy that leaves the energizer onto the fence. Gallagher prints both. The US M1100 page lists 11 stored joules and 7.7 output joules. The S120 Lithium page lists 1.2 stored joules and 0.94 output joules. Zareba’s EAC200M-Z page publishes 15 output joules and does not publish stored joules. Parmak prints a low joule figure and a high joule figure (1.1 and 3.1+ on the Magnum 12 and the Solar-Pak 12) and does not label either number as stored or delivered. Compare output or delivered joules when the maker prints them. A larger stored number with no output number is an incomplete spec.
How many joules do I need for cattle?
No manufacturer page checked for this refresh publishes a universal cattle-joule minimum. Zareba lists bulls, cattle, horses, goats, sheep, pigs, and predators for the EAC200M-Z, which it rates at 15 output joules. Parmak lists cattle among the recommended uses for the Magnum 12, which it rates at 1.1 low and 3.1+ high joules, on a 30-mile marketing range. Gallagher’s M1100 is described for large pastures, with 7.7 output joules and a typical-fence rating of 36 miles. The Patriot PE10B is 0.3 output joules. One seller page lists cow among suitable animals and another retail listing marks cattle as no, so treat the PE10B as a short temporary run. Cattle on a weedy or frozen winter perimeter need the output joules and the ground system, not a box mile rating alone.
Can electric fence work through snow?
The pulse can still be on the wire when snow is on the ground. The shock fails when the animal cannot complete the circuit. Parmak’s manual says dry or frozen conditions block the earth return, which is the same problem a dry snowpack creates for an all-hot fence. Gallagher’s earthing guidance calls for an earth-return wire in year-round dry, frozen, or snow conditions, so the animal touches a hot wire and a grounded wire together. Snow or ice on a solar panel is a separate problem: it shades the panel. Clear it. Neither failure is fixed by buying a larger charger while the return path or the panel stays blocked.
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