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Electric Fence Energizers and Batteries: Everything You Need to Know

Electric Fence Energizers and Power Sources

If you’re looking for ways to protect your animals or property, an electric fence is a great option. However, one of the most critical components of any electric fence is the energizer or charger.

The energizer is what delivers the pulse of electricity that keeps your fence hot and discourages any unwanted visitors. In this article, we’ll cover everything you need to know about electric fence energizers and power sources.

Types of Energizers and Power Supply Units

Before you start looking for an energizer for your fence, you’ll need to know what types are available. There are three main types of electric fence energizers available, each with its own benefits and drawbacks.

1. Solar Power Energizers: Solar power energizers are the perfect choice if you’re looking for an environmentally-friendly and cost-effective option.

The main advantage of a solar energizer is that it runs on renewable energy and does not require a power outlet. This feature makes it easy to install, especially if your fence is located in a remote area.

With a solar panel attached to the energizer, you can give your fence a steady charge during both day and night. 2.

Battery-Operated Energizers: Battery-powered energizers are another popular option because they are simple to install and run. Unlike solar energizers, they don’t require sunshine or consistent exposure to deliver electricity.

Battery-operated energizers are ideal for small fences or those located near a power source. 3.

Plug-in Energizers: As the name implies, plug-in energizers require access to an electrical outlet. They’re the most commonly used type of electric fence energizer, providing a stable power source for any fence, regardless of size.

Plug-in energizers come in all shapes and sizes, making them an excellent choice for any type of electric fence.

Choosing the Right Energizer for Your Needs

You’ll want to select an electric fence energizer based on your specific needs. The factors that you should consider include:


Cost-Effective: Solar energy is a great option if you’re looking for an affordable source of electricity. It’s a long-term investment that will save you money in the long run.

2. Outlet-Operated Energizers: If your fence is located near a power outlet, you’ll want to use a plug-in energizer.

This will give you the best results and not require you to change batteries or solar panels. 3.

Battery-Operated Energizers: If your fence is located where you can’t get access to a power outlet, a battery-operated charger will work well. Specifically, this option works best for smaller enclosures or livestock fields.

Best Electric Fence Energizers

1. Zareba EDC5M-Z Battery-Operated Electric Fence Charger: This charger works great in weather-resistant cases, using a seven-volt battery charge.

It’s perfect for small to medium-sized pastures in dry weed conditions. 2.

Parmak MAG12-UO 12-Volt Battery-Operated Fence Charger: For wet weeds and brush, the Parmak MAG12-UO works best, running on a low-impedance circuit for superior performance. It also features a robust waterproof design with a built-in performance meter.

3. Patriot P10 Dual Purpose Electric Fence Energizer: The Patriot P10 is a versatile charger that can be powered by AC, battery, or solar power.

It can cover up to thirty miles or 100 acres, making it ideal for large properties. The waterproof design ensures reliability and long-term use.

In conclusion, the right electric fence charger or energizer is a crucial component of any electric fence. You should consider the size and location of your fence, as well as your power options, before selecting an energizer.

For smaller units, such as animal enclosures, a battery-operated charger may be sufficient, while larger applications will need AC, solar power, or a combination of both. With this information, you can begin finding the best electric fence energizer to meet your needs.

Best Electric Fence Batteries

An electric fence requires reliable and long-lasting power to be effective. Finding the right battery for an electric fence can be a daunting task, but using the best electric fence battery can prolong the life of your charger and help provide safe and reliable power to your fence.

In this article, we will cover the best electric fence batteries available on the market.

Interstate Batteries 12V 35AH Deep Cycle Battery

One of the best electric fence batteries available is the

Interstate Batteries 12V 35AH Deep Cycle Battery. This rechargeable battery has a voltage rating of 12V and a capacity of 35 Ah, making it an ideal choice for high-performance use.

It uses Valve Regulated Lead Acid (VLRA) technology, which ensures the battery is tightly sealed and prevents leaks. The professional-grade quality of this battery ensures reliable and consistent long-term use for your electric fence.

VMAX V35-857 12 Volt 35AH Deep Cycle Battery


VMAX V35-857 12 Volt 35AH Deep Cycle Battery is another high performing option for electric fences. Although it’s marketed as a marine deep cycle battery, it’s non-spillable and non-hazardous, making it ideal for electric fences.

The VMAX battery has a rating of 12 volts and a capacity of 35 Ah, delivering high-performance power to your electric fence.

Interstate Batteries 6V 7AH Sealed Lead Acid (SLA) AGM Battery


Interstate Batteries 6V 7AH Sealed Lead Acid (SLA) AGM Battery is a budget-friendly and practical option for small electric fence energizers. It utilizes Absorbent Glass Mat (AGM) technology, which keeps the battery maintenance-free and easy to install.

This battery has a voltage rating of 6 volts and a capacity of 7 Ah, perfect for small electric fences.

Frequently Asked Questions

Using Car Batteries with Electric Fences

If you’re looking for a cheap and easy solution for an electric fence battery, you may be tempted to use a car battery. However, not all car batteries are designed for deep cycle use, which can reduce their lifespan and make them unreliable.

It’s best to use deep cycle batteries, leisure batteries, or batteries specifically designed for electric fences, as they are built to handle constant discharge and are better suited for this purpose.

Safety of Electric Fences

Electric fences are designed to provide a shock to discourage unwanted visitors, but they are not lethal. The shock delivered by an electric fence is a pulsating low-current voltage that is uncomfortable, but not dangerous.

It’s important to ensure that your fence is grounded correctly and that animals are protected from contact with the fence.

Understanding Joules

Joules are the unit of energy used to measure the output of an electric fence charger. Joules measure the amount of energy that a charger can deliver to a fence.

The higher the joules, the more powerful the charger will be and the greater the shock it will deliver. It’s important to choose an electric fence charger that has appropriate joules for the size and length of your fence.


Choosing the best electric fence battery is an important task that can be difficult with the range of options available. Ensuring that the battery is specifically designed for electric fence use, and utilizing deep cycle options to maximize the life of your battery, will help to guarantee reliable, safe, and long-lasting power to your electric fence.

Understanding joules, battery technology, and safety factors can also greatly assist this process. In conclusion, choosing the best electric fence energizers, power sources, and batteries is crucial to ensuring your fence is effective, safe, and reliable.

Whether it is your home livestock enclosure or a larger property fence, understanding the available options, associated features, and suitable capacity is key. Factors such as battery technology, voltage ratings, capacity, and deep-cycling should be considered to maximize the life of your battery and ensure your fence is efficiently powered.

Keep safety in mind and understand that electric fences are not lethal, but, with the right setup, they can effectively deter and protect your animals and property.


1) Can I use a car battery for my electric fence?

– It’s not recommended. Car batteries may not be designed for deep cycle use, reducing their lifespan and making them unreliable.

It is best to use deep cycle batteries or those designed specifically for electric fences. 2) What is the difference between a solar power and battery-operated energizer?

– Solar power energizers are cost-effective and environmental-friendly, while battery-operated energizers are easy to install and ideal for small enclosures. 3) How does an electric fence work?

– Electric fences deliver a pulsating low current voltage, which deters animals from touching the fence. 4) What is Joules?

– It is the unit of energy used to measure the output of an electric fence charger. 5) What should I consider when choosing an energizer?

– The size and location of your fence, power options, and your specific needs, such as cost-effectiveness, outlet compatibility, or for remote areas with no access to power outlets.

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