The Best Electric Fence Charger. Buying Guide

Electric Fence Charger


An electric fence charger (or an electric fence energizer) is used to provide the source for the electric current that flows through the fence wires. When an animal touches these wires, electric shocks prevent it from crossing the boundary. As a result, your farm animals are kept in and wild animals are kept out. Pay attention that it is important to choose electric fence chargers from respected companies that offer products that don’t harm animals.

Nowadays, there is a huge variety of products to choose from. To buy the best product that will meet all your needs is not a walk in the park! In this article, you will find the information to learn more about electric fence chargers! 


  • A low impedance fence charger -  there is less resistance in the charger and more power can be pushed through the wire. Such devices are perfect for lands with weeds.
  • A solid-state fence charger - there is a medium amperage shock in pulses of medium duration. Such products are ideal if you need to control short-haired livestock or small animals.
  • A high-impedance fence charger - known as a weed burner - there is a risk of damaging vegetation that contacts the fence and fires can occur. These devices are not that safe to use.

Electric Fence Chargers. Classification

There are 3 main fence energizer types:


These are the most popular and easy-to-use fence chargers, all you need to do is plug the device into a standard wall outlet for reliable power. They are great if you need to fence large areas. Please note that these fence energizers offer the best output compared to other types.

  • they are affordable and do not consume much energy so you can rest assured that you won’t get massive bills;
  • they are easy to use, just plug the device in and that’s it.
  • in case of a power outage, the device won’t operate properly, which means that your farm animals won’t be kept in and predators won’t be kept out;
  • you have to find where to plug such fence chargers in, which can be a problem sometimes.

DC-Powered (Battery-Operated)

These devices are a perfect option for remote locations in case you don’t have an electrical outlet. It is important to replace batteries in time (if necessary). 

  • they can be used anywhere, even in places without electricity;
  • these devices are easy to set up and use.
  • if you don’t notice that the battery is dead in time, then your fence energizer temporarily won’t do its job.


Ideal for areas without any access to an electrical outlet, the devices are equipped with a battery for energy storage and a solar panel that collects the sun’s energy in order to charge the battery. 

  • these devices require little maintenance;
  • they are not susceptible to power outages.
  • you have to check on your solar-powered fence energizer every now and then to make sure that it is not turned over or the sunlight is not blocked;
  • these fence chargers are not budget-friendly.

Choosing the Right Fence Charger

4 Things to Consider When Choosing a Fence Energizer

When you are in search of a fence charger, you have to take into account the following factors:

  • the length of the fence  - it is recommended to buy a bit larger electric fence charger than you think you need (to allow for expansion + to compensate for the power loss if some plants contact your fence). However, you don’t need to buy the most powerful device for a small area.
  • the number of wires - as a rule of thumb (for multi-wire fences), you should divide the charger’s distance rating by the number of strands, after that, you can select a charger with a mileage rating you need.
  • power source - there are AC-, DC-, and solar-powered fence energizers.  If you need more detailed information about each type, you can find it here. (нужно вставить ссылку на Section 2 Electric Fence Chargers. Classification.)
  • the type of animal that is contained or excluded - here’s an example: if you are planning on keeping sheep or goats in, then you have to bear in mind that they may not feel the shock due to their thick wool (if the fence charger is not powerful enough). As a rule, the manufacturer indicates the animal to help you choose the right product.

Pay Attention to the Units of Measurement

Knowing the units of measurement makes it easier to pick the right fence charger for your application. Let’s consider joules, volts, and amps.

The joule is the unit of energy. You may see 2 types of joules: stored (the energy/power stored inside your fence charger) and output (the energy/power sent through your fence). The bigger fence you have, the more joules you need.

The volt is the unit of electrical potential. High voltage is essential if you want to be sure that your fence is effective even if you deal with animals that have thick hair. The thicker the hair, the higher voltage you need.

The amp is the unit of electrical current. It is the amount of electricity that flows through the circuit. 

Buy electric fence chargers on Mega Depot!

Power Wizard electric fence chargers are designed to handle even the worst ground conditions and have built-in lightning protection. They feature a cutting-edge Ultra low impedance technology. Thanks to it, the energy continues to flow even in bad conditions.

On our website, you can find an array of electric fence chargers. It is possible to choose from AC-, DC-, and solar-powered models. Pay attention to the following models:


FarmPro Plug-in Electric Fence Energizer

Power Wizard FP24000XR

FarmPro Plug-in Electric Fence Energizer

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It is a powerful 110V plug-in fence charger with an array of useful features. For instance, a Fence Voltage Indicator allows you to view the voltage that is distributed to your fence. The indicator is color-coded so you can determine the voltage as well as the condition of your fence. The benefits of this model include:

  • Fence Voltage Indicator
  • Ultra low impedance
  • 24 joule output
  • remote control

This fence energizer is for you if you are in search of a top-notch fence charger. 


Battery Electric Fence Charger

Power Wizard PW2000b

Battery Electric Fence Charger, 2 Joule Output

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It is a great 12V battery-powered electric fence energizer for use with permanent/semi-permanent fencing. There are such advantages as:

  • Ultra low impedance
  • 2.0 joule output
  • 12V battery 

The device is ideal if you don’t have access to electricity or there is not much sunlight in your area.


Solar Electric Fence Charger

Power Wizard PW500s

12V Solar Electric Fence Charger 0.5 Joule Output

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This device is powered by solar energy and features:

  • Ultra low impedance
  • 0.5 joule output

This fence energizer is a perfect option if electrical current is unavailable. The product can be used for a dairy farm, cattle ranch, etc. With this device, you don’t need to pay for electricity or batteries (like the owners of AC- and DC-powered models).

Installing Your Fence Charger

It is not enough to choose the right fence energizer, it is also important to install the device properly. 

To install your fence charger, you will need:


  • a screwdriver - for mounting your energizer, cut-off switch, and lightning choke;
  • a wire cutter - for cutting and stripping insulation;
  • a post driver - for the installation of ground rods;
  • a digital voltmeter - for the testing/troubleshooting of your electric fence.


(you can also use a ground rod kit)

Or you can use the Power Wizard Portable Corral Kit, which includes everything you need to make a fenced area intended for cattle, horses, alpacas, and more.


  1. Prior to installing and using any device, it is important to read the user’s guide. You can find there all the necessary information considering the exact model you own.
  2. Shelter the device from such factors as moisture, extreme temperatures, etc.
  3. In case you have a plug-in model, place it near an AC power source.
  4. The device should be accessible to a ground rod system, which is separate from building or grounding rods used by other systems/buildings.


It is worth mentioning that the ground system completes the circuit during operation and, when touching the fence, an animal gets an electric shock. 

  1. Locate an area of soil for placing ground rods that contains good conductive earth. Avoid rocky, sandy, or dry earth (pay attention that dry earth is more resistant to electrical flow). Make sure that you locate the ground system within 75 ft of the electric fence charger and a minimum of 25 ft from buildings.
  2. Locate the ground system at least 75 ft away from utility company ground systems, underground water pipes, metal water tanks, metal siding on the building (at least 25 ft away).
  3. Drive 3 galvanized ground rods (6 foot by 1/2” at least) 10 ft apart in a straight line or a triangle pattern in the selected ground area. Leave 6 in above the ground (for securing ground clamps). After that, mark the area as a hazard.
  4. Connect the ground rods, in a series, with 1 piece of continuous 10-14 gauge galvanized wire. Note that the ground hook-up wire should be equal to or larger than the diameter of the fence line wire.

The Installation Of The Ground System

  1. 12-14 gauge galvanized fence wire. 
  2. ground rods – 6 ft long by 1/2” (at least) in diameter, galvanized steel rods.



  1. Locate your fence charger within 75 ft of the ground system. It is recommended to use only polarized extension cords. Mount the fence charger:
  • at the eye level (+ inaccessible to children and livestock);
  • protected from moisture and unwanted weather conditions;
  • in a ventilated place, away from flammable materials and gases.
  1. Prior to connecting the “FENCE” and “GROUND” energizer terminals, make sure you plug in/power on the fence charger and check the output voltage at the terminals with an electric fence voltmeter (use only those voltmeters that are intended for this application). Record the voltage as a benchmark for future reference. The indicator light will be flashing and you will hear a “click” at 1-2 second intervals. 
  2. Unplug/turn your fence charger off and ONLY THEN connect the “GROUND” terminal to a 10-14 gauge insulated lead-out wire (or a “hook-up” or “underground fence wire”, rated at 20,000V). Connect the opposite end of the wire to the closest ground rod using a ground clamp and shiny bare metal contact surfaces. After that, connect the “FENCE” terminal to a 10-14 gauge insulated lead-out wire (rated at 20,000V) and connect the opposite end to a fence “cutout” switch that is located on the first fence post.
  3. Plug your fence charger in and measure the voltage at the “cut-out” switch before and after activating the fence. Record these voltage measurements so later you can use them as a reference when checking the fence connection.

The Installation Of The Electric Fence Energizer

      1. insolated hook-up wire (20,000V);
      2. galvanized fence wire;
      3. 6 foot galvanized ground rod, 1/2 inch diameter or more;
      4. ground clamps;
      5. power supply – use power supply specified by the label on the energizer only;
      6. ground rods MUST be at least 25 ft away from the building foundation.



  1. Unplug the fence energizer.
  2. Place the fence under heavy load by “shorting” the fence: at a location on the fence at least 300 ft from the fence charger, lean 3-4 steel stakes or T-posts against the “hot” wire of the fence. Or, instead of that, you may push several pieces of the fence wire into the earth and wrap the opposite ends around the hot wire.
  3. Plug the fence charger in and check the fence line voltage (use a digital voltmeter). The voltage should drop below 2,000V due to “shorting” the fence. Keep shorting the fence by leaning steel posts or by making wire connections to the ground at the distance of at least 300 ft from the electric fence charger until the fence line voltage drops below 2,000V.
  4. Connect 1 lead of the digital voltmeter to a 12 in metal stake driven into the ground 3 ft away from the last fence charger ground rod. Connect the 2nd lead to the ground rod furthest from the fence charger. The voltage reading should be from zero to no more than 200V.
  5. In case the digital voltmeter shows the reading that is under 200V, everything will work well.
  6. In case the reading is more than 200V, take the following steps:
  • add more ground rods connected in series, 3 ft apart, and/or
  • move your ground system to moist soil until the ground system voltage is below 200V.
  1. Check your ground system condition with a voltmeter once during the driest period and once during the wet season each year to ensure adequate grounding of your electric fence.

To protect your fence charger from lightning damage, you can install a special lightning arrestor, a lightning choke, as well as a surge protector (for AC-powered models). 

It is recommended to install a minimum of one more ground rod for the arrestor than the number of ground rods you used for the fence charger ground system. 

To monitor the performance of your fence, you can use a special digital voltmeter. With its help, you can easily monitor the voltage levels on the fence. Please note that you CAN’T use a household voltage meter as the input voltage of regular multimeters is exceeded by the output voltage of Power Wizard electric fence chargers.

In case you face some problems with your electric fence energizer, read the troubleshooting guide.

There can be another issue to think about, you may need to locate shorts/broken fence wires. How do you do it? Again, a digital voltmeter will meter will come in handy. Use it to test each section of your fence.

power wizard system check


There are AC-, DC-, and solar-powered fence chargers. Each type has its advantages and disadvantages, you have to pick the most suitable product for your application. When choosing an electric fence energizer, of course, you want a dependable device. Now that you have read this article, we hope you are ready to make the right choice! Shop with Mega Depot and use the best devices!

power wizard Safety Information

DO NOT touch the fence to check if it is working, use a special digital voltmeter for that.

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