An Overview of AGM Batteries

Wondering what is an AGM battery and whether it is worthwhile for your deep cycle battery application? Learn all about the pros and cons of AGM batteries and why one may be best for you. 

Are you tired of dealing with the hassles of traditional lead-acid batteries and looking for a more reliable, maintenance-free solution? Then it's time to discover the world of Absorbent Glass Mat (AGM) batteries. 

In this comprehensive guide, we will delve into the ins and outs of what is an AGM battery, their advantages and how they compare to other battery types. 

Grab a notebook and get ready for a deep dive into the fascinating world of how AGM batteries work and why they are great alternatives to standard flooded batteries.

KEY TAKEAWAYS

• AGM batteries offer superior performance, versatility and safety features for a range of applications.
• AGM vs Flooded Lead-Acid Batteries: An AGM battery is more expensive but provides improved performance and maintenance-free operation. Flooded batteries require regular maintenance and are potentially hazardous.
• Charging Requirements: Low amp charger with temperature compensation is necessary to maximize battery lifespan and reliability.

What is an AGM Battery?

At the core of Absorbant Glass Mat (AGM) batteries lies a cutting-edge technology that has revolutionized the world of lead-acid batteries. AGM stands for Absorbant Glass Mat, which is the deep cycle battery technology whereby an electrolyte solution is suspended by a fiberglass mat between lead plates.

This allows for more surface area of the positive and negative lead plates for the necessary chemical reaction to take place inside the battery.

Compared to traditional flooded batteries, AGM batteries employ absorbent glass mat technology to hold the electrolyte in suspension between battery plates, creating a non-spillable battery with less fluid but same energy output.

With the electrolyte solution suspended between battery plates, the AGM technology gives it an advantage over a regular battery because it increases the surface area for which a chemical reaction can take place between the negative lead plates. 

As a result, AGM batteries offer improved performance, versatility and safety features, making them the go-to choice for modern vehicles and heavy-duty applications.

Absorbent Glass Mat Technology

The key to AGM technology is the use of fiberglass mats between the negative and positive plates inside the battery. These mats act like a sponge, holding the electrolyte in place and providing maximum surface area for the electrolyte to touch the plates without flooding the battery with too much fluid. 

This design not only ensures a non-spillable battery with a reduced amount of fluid, but also results in a higher depth of discharge (DoD) of upwards of 60%, compared to a standard flooded battery depth of discharge of 50%.

Ten percent may not seem like a huge difference. But in the life of a battery, this is a cost effective way of providing more power and longer life for an AGM battery over a lead acid battery.

Moreover, AGM battery technology contributes to the battery's sealed design, preventing the escape of gases and allowing for longer battery life. The sealed nature of the absorbed glass mat deep cycle battery also creates a worry-free energy source that requires no maintenance and allows you to mount the battery in any orientation (other than upside down).

The unique properties of AGM batteries make them particularly suitable for a wide range of applications, from starting engines to providing reliable power for electronic devices and equipment.

Sealed Design

One of the major advantages of AGM batteries over traditional flooded lead-acid batteries is their sealed design. This design not only prevents the escape of hydrogen and oxygen gases, which can lead to decreased battery life, but also renders the battery spill-proof, making it safe for use in a variety of applications. With minimal gassing, you can install the agm battery in an enclosed space as opposed to flooded batteries that need space for ventilation.

Furthermore, AGM batteries can be installed in any orientation without compromising their performance. This flexibility, combined with their resistance to vibration makes AGM batteries an excellent choice for a wide range of industries and applications, including automotive and RV, marine, solar power and backup energy storage systems.

Advantages of AGM Batteries

AGM batteries boast several advantages over their flooded battery counterparts. Their lower internal resistance results in benefits such as increased cycle life, vibration resistance and decreased weight.

These properties make an AGM battery an ideal choice for modern vehicles with advanced always-on technology, as well as for seasonal use in RVs, fishing boats, and powersports vehicles that require higher energy output and resistance to acid spillage and vibration.

Enhanced Performance

Thanks to their low internal resistance, an AGM battery can provide high currents when requested. This makes them perfect for short, intense bursts of energy and smaller, more reliable amounts of stored energy over a longer period of time. Thus an AGM battery works great as starting batteries in vehicles where large bursts of current are required to kickstart an engine.

Additionally, an AGM battery has an extended service life, even when subjected to deep-cycling, ensuring that you get the most out of your investment. While not as great as lithium batteries to some degree, an AGM battery offers a lot of similarities that make it a great option if you are seeking a lower-priced lead acid battery.

Furthermore, for deep cycle batteries, AGM batteries are maintenance-free and spill proof, making them a hassle-free option for those who want reliable power without the need for constant upkeep. With their exceptional performance, it's no surprise that AGM batteries are becoming increasingly popular in a variety of applications and serve as the middle ground between flooded batteries and lithium batteries.

Finally, when compared to lithium batteries, AGM batteries can hold up to both charging and discharging in extreme temperatures. One of the most limiting factors of lithium batteries is their inability to charge in sub-freezing temperatures. An AGM battery will work fine in cold conditions such as these. 

Versatility

AGM batteries are known for their versatility, making them suitable for a wide range of applications. For example, they can serve as dual-purpose batteries for RVs and boats, providing strong starting power for additional applications. 

This eliminates the need for separate starting/cranking (SLI) and deep cycle batteries, simplifying your power management system and saving space on board.

Moreover, AGM batteries are more resistant to terminal corrosion as there is no gassing or chance for battery acid spillage and AGM batteries tend to provide reliable power for trolling motors and other onboard electronics in marine applications. 

Their ability to withstand deep discharges, resistance to vibration with little to no maintenance also makes them an excellent choice for RV applications, providing reliable energy for lights, appliances and other RV accessories.

AGM Battery Applications

An AGM battery is ideal for starting applications in vehicles like cars, trucks, RVs, boats, and other motorized vehicles. Their higher voltage output makes them particularly suitable for powering the technology found in modern and heavy-duty vehicles.

In addition, AGM batteries are becoming more popular in hybrid and start-stop vehicles due to their advanced always-on technology.

Let's explore some of the specific applications of AGM batteries in various industries.

Automotive Vehicle Use

The unique design of an AGM battery, which includes the use of positive and negative plates separated by an absorbent glass mat, has resulted in a higher voltage output, making them a suitable choice to power the technology found in modern and heavy-duty vehicles. 

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Furthermore, AGM batteries are estimated to last quite a bit longer than a comparable lead acid battery in start-stop applications, providing a reliable and long-lasting source for your vehicle.

In addition to their superior performance, an AGM battery also requires no maintenance, other than checking to ensure proper terminal connections, making it an attractive option for busy vehicle owners who want a hassle-free power solution. 

With their numerous benefits, AGM batteries are quickly becoming the go-to choice for automotive vehicle use.

Marine Applications

Marine applications are another area where an AGM battery excel. Their ability to tolerate vibration and the salinity of seawater makes them a popular choice for boats and other marine vehicles. 

AGM batteries are highly versatile and can be utilized as dual-purpose batteries for boats, providing both strong starting power and sufficient cycling power to power additional applications.

Moreover, AGM batteries are more resistant to terminal corrosion and can provide reliable power for trolling motors and other onboard electronics in marine applications. Their maintenance-free nature and sealed design make them a safe and reliable option for boaters who want to focus on enjoying their time on the water instead of worrying about their batteries.

RV Applications

AGM batteries work for RV applications as well, providing reliable power for lights, appliances, and other RV accessories. Their ability to withstand deep discharges, vibration resistance, and being free of maintenance nature make them an excellent choice for RV enthusiasts who want a dependable power source without the need for constant upkeep.

In addition, their sealed design and resistance to acid spillage make AGM batteries a safe and environmentally friendly option for use in RVs. With their numerous advantages, AGM batteries are a top choice for RV owners looking for a reliable and hassle-free energy storage solution.

Comparing AGM Batteries: AGM vs. Flooded vs. Lithium

While AGM batteries offer numerous benefits over traditional flooded lead-acid batteries, they may not always be the best choice for every application. In many cases, lithium battery upgrades may be a more suitable option for energy storage applications.

To help you make an informed decision, let's compare AGM batteries with flooded lead-acid and lithium batteries.

The Difference Between an AGM Battery vs. Flooded Lead-Acid Battery

One of the primary differences between AGM and flooded lead-acid batteries is the cost. AGM batteries are more expensive than their flooded counterparts, making them unsuitable for massive energy storage applications. And they tend to weigh more than flooded batteries due to the lead plates inside the battery.

However, AGM batteries offer several advantages over traditional flooded batteries, including improved performance, no maintenance and a sealed design that prevents acid spillage. An AGM battery is also more cost effective than a lead acid battery in the long run because, when properly maintained, they may last six to eight years.

On the other hand, flooded lead-acid batteries require regular maintenance and can emit gas during charging, making them less convenient and potentially hazardous compared to AGM batteries.

Ultimately, the choice between AGM and flooded lead-acid batteries will depend on your specific needs and budget. But the advantages of an AGM battery make AGM batteries worth the extra cost over a flooded battery.

WHICH BATTERY HAS THE ADVANTAGE?

FLOODED (FLA) AGM COST X WEIGHT X MAINTENANCE-FREE X LIFESPAN X DEPTH OF DISCHARGE X SELF-DISCHARGE RATE X MOUNTING ORIENTATION X   CHARGING SPEED X

The Difference Between an AGM Battery vs. Lithium Battery

When comparing AGM and lithium batteries, it's important to consider the specific application and requirements. In general, lithium-ion batteries are more expensive initially, but offer a longer lifespan, higher capacity, and are lighter and more compact than AGM batteries. They can also discharge up to 95%, whereas AGM batteries are limited to 50%.

However, AGM batteries have the advantage of providing greater cranking power, making them more suitable for engine starting applications. In most cases, AGM batteries are inferior to lithium batteries, except for engine starting where they outperform lithium batteries.

Ultimately, the choice between AGM and lithium-ion batteries will depend on your specific needs and preferences.

WHICH BATTERY HAS THE ADVANTAGE?

AGM LITHIUM COST X WEIGHT X MAINTENANCE-FREE BOTH BOTH LIFESPAN X DEPTH OF DISCHARGE X SELF-DISCHARGE RATE X MOUNTING ORIENTATION BOTH BOTH  CHARGING SPEED X

 

Read Next: Check out our comprehensive comparison between AGM and lithium batteries!

WHICH BATTERY HAS THE ADVANTAGE?

 FLA

AGM

LITHIUM

COST

X

WEIGHT

X

MAINTENANCE-FREE

BOTH

BOTH

LIFESPAN

X

DEPTH OF DISCHARGE

X

SELF-DISCHARGE RATE

X

MOUNTING ORIENTATION

BOTH

BOTH

CHARGING SPEED

X

 

At Enduro Power Batteries we recognized the limitations posed by other 12 volt battery types and made the commitment to designing the best lithium alternatives for a variety of applications. We only sell the best lithium batteries that are guaranteed to offer the greatest value over the duration of the battery’s life. 

SHOP ALL OF OUR LITHIUM BATTERY OPTIONS 

Charging and Maintaining AGM Batteries

To ensure optimal performance and extend the lifespan of your AGM batteries, it's crucial to charge and maintain them properly. AGM batteries require a slower and more stable charge to avoid under or overcharging, which can lead to diminished battery life.

Let's explore the charging requirements and maintenance tips for AGM batteries.

Charging Requirements

AGM batteries should be charged at a rate of 10 - 20 amps for optimal performance. Using a low amp charger (1 to 10 amps) is the best choice for charging any lead-acid battery, as it prevents the generation of excessive heat that can shorten the battery's lifespan. 

Additionally, charging an AGM battery at 10.5 volts or higher is acceptable under typical starting conditions.

It's important to use temperature-compensated charging, which adjusts the charging voltage based on the battery's temperature, to prevent overcharging or undercharging. Employing the appropriate float voltages also helps ensure that the battery is neither overcharged nor undercharged, which can result in diminished battery life.

Maintenance Tips for Absorbed Glass Mat Batteries

While AGM batteries are maintenance-free, it's still important to check them regularly for signs of corrosion and keep them clean to ensure optimal performance. Storing AGM batteries in a cool, dry place and out of direct sunlight can help prolong their lifespan. 

Additionally, using a smart charger designed to automatically adjust the charging voltage and current according to the battery's requirements can help extend the battery's life.

By following these simple maintenance tips and charging your AGM batteries properly, you can maximize their performance, lifespan and reliability. This will allow you to enjoy the numerous benefits of AGM batteries without worrying about unexpected power failures or costly replacements.

Buy Lithium and Never Buy Another Battery Again!

Even if you are leaning toward purchasing an AGM battery after this post, if you do not want to have to shop for another battery, then choose one of our Enduro Power Battery lithium batteries for your desired application.

Our batteries are designed with technology that means that you can be very hands off when it comes to making your batteries last. Not only is teh quality of our battery backed up with a 10 year warranty, but also each battery is equipped with a state-of-the-art battery monitoring system (BMS) to ensure that your battery is protected from excessive high or low voltage.  

And with less than a 3% self-discharge rate, our batteries will perform right away when you pull them out of seasonal storage. 

We are confident that the overall value of our batteries exceeds that of other brands on the market. We’re not the cheapest and we’re not the most expensive. But we have a great team that will walk you through every decision you need to make and any questions you have about the installation and use of our batteries.  

Summary

AGM batteries offer numerous advantages over traditional flooded batteries and even have the lead over lithium batteries in a few categories. This makes them a popular choice for various applications such as automotive, marine, and RV use. 

Their advanced technology, sealed design and maintenance-free nature provide improved performance, safety, and convenience compared to other battery types. 

However, it's important to carefully consider your specific needs and preferences when choosing between AGM, flooded batteries and lithium batteries. 

By understanding the unique features and benefits of AGM batteries and properly charging and maintaining them, you can ensure optimal performance and enjoy a reliable, hassle-free energy storage solution for years to come.

 

NEED MORE ASSISTANCE PLANNING YOUR POWER SETUP? 

GIVE US A CALL AT 303-968-1366 AND OUR TEAM WILL HELP YOU GET STARTED!

An Overview of AGM Batteries

AGM batteries are a type of rechargeable battery that can be used for electric vehicles, boats, ATVs, motorcycles, and they’re often used in off-grid power systems. They have special features that make them suitable for these types of jobs, but they also have some disadvantages. In this article, we'll give you an overview of AGM batteries and how they differ from other types of rechargeable batteries.

 

What is an AGM battery?What is an AGM battery?

An AGM battery is one that uses an Absorbent Glass Mat (AGM) inside the battery. This is a special type of glass material that acts as a sponge, soaking up any extra water in the battery. You can tell if your product has an AGM by looking for “AGM” on the label, or by using the model number to look it up on the manufacturer’s website. If you're not sure where to look, ask us! If you have a CROWN battery or are interested in one, the specifications for our batteries are available online to review.

AGM batteries are ideal for use in situations where you don't want your battery to be damaged by water or humidity. They're also great for marine applications because they can withstand the salinity of seawater.

AGM batteries are filled with electrolyte and sealed, which means they don't need to be topped off or refilled like a flooded battery would. This makes them ideal for use in applications where there is little chance of access to water, such as a marine environment or off-grid power supply.

 

AGM Batteries vs Regular Batteries

AGM batteries are also known as “maintenance-free” or “dry” batteries because they do not contain liquid electrolyte. The electrolyte is replaced with an absorbent fiberglass mat material that allows for more efficient conversion between electrical energy and chemical energy. This design also means that these types of batteries do not leak acid like regular lead-acid batteries.

In addition to being maintenance free, AGM batteries have other advantages over traditional lead-acid models:

• More efficient than regular batteries
• Durable
• Longer-lasting
• Charge faster
• Can be stored in any position without affecting performance (whereas traditional models should be kept upright)

 

How are AGM Batteries Different than Deep Cycle Batteries?

AGM batteries are more expensive than traditional deep cycle batteries, but they are also more durable. They can be mounted in any position and can take a lot of abuse. AGM batteries are also more resistant to shock and vibration than regular batteries, which makes them ideal for use on motorcycles or in other applications where there is a lot of movement. AGM batteries are less susceptible to heat than traditional deep cycle batteries, so you will experience less power loss during long-term storage or high-heat days.

 

Do AGM Batteries Need to be Charged Differently Than Other Batteries?

AGM batteries do need to be charged, however you should never charge an AGM battery with a charger meant for a lead-acid battery, or vice versa. To charge an AGM battery, make sure you have a charger that is designed for this type of battery, which may be different than the charger that was included in your car or boat’s onboard equipment.

Whether or not a charger can be used for AGM batteries should be noted on the charger’s label.

 

Benefits of AGM Batteries

AGM batteries have a number of benefits over regular lead-acid batteries:

• More efficient and last longer than regular batteries
• Environmentally friendly
• Less toxic than traditional gel or flooded cell batteries
• Durable
• Increased safety because they do not allow hydrogen gas to escape during charging or discharging cycles

The main benefit of AGM batteries is their energy density. This means that they can store more energy per unit weight than other types of lead-acid batteries. This makes them ideal for applications where weight is a major factor, such as in marine or RV applications where space and weight can be limited.

Another benefit of AGM batteries is that they can be recharged more often than other types of lead-acid batteries without causing damage to the battery. This makes them ideal for applications where frequent charging is required, such as in emergency lighting systems or backup power supplies.

AGM batteries also have a longer lifespan than traditional lead-acid batteries. This is because they can withstand more charge cycles before losing their ability to store energy. In addition, AGM batteries are also more durable because they do not contain any liquid chemicals which could leak out of the battery if it is damaged during use or transport.

 

How to Choose an AGM Battery

1. Consider Reserve Capacity

Look for a battery with a high reserve capacity. This means that the battery can deliver more amperes (current) for longer periods of time, and has a low internal resistance, which means that it is not prone to overheating or overcharging.

 

2. Check the life span

Select a battery with a long life span. Check how many years you want the battery to last — this will depend on how often you use it and how much power it provides.

 

3. Check for reliability, safety, and maintenance needs

Choose one that is reliable, safe, maintenance free and environmentally friendly. If possible, try comparing standby performance rather than just starting performance because this gives a better indication of what happens when the engine is off but still running other equipment like lights.

If you are buying a battery for an emergency power supply, look for one that has been tested at least once per year and labeled as “spill proof”. This will make it easier to transport and store.

If you need a battery for your car, look for one that has the correct voltage and amperage capacity. This will ensure that it fits your vehicle and can handle the electrical requirements of all its components. If you are planning to get a deep cycle battery, ask how many cycles it can provide before needing replacement — this will depend on how often it is used and how much power it provides.

If you are planning to get a deep cycle battery, ask how many cycles it can provide before needing replacement — this will depend on how often it is used and how much power it provides. If you are buying a battery for an emergency power supply, look for one that has been tested at least once per year and labeled as “spill proof”. This will make it easier to transport and store.

 

An AGM battery can save you time and money

An AGM battery will cost more than a regular lead-acid battery — but it'll last longer and save you money in the long run.

They last longer than regular batteries. Because they don't have any liquid inside them, AGM batteries have fewer components to fail, so they last longer than traditional car batteries.

They're more efficient than regular car batteries. In addition to lasting longer and costing less over time (in terms of maintenance), AGMs are also less toxic and easier on the environment than other types of automotive power sources because they don't contain any corrosive liquids; this makes them safer for disposal after use as well as for recycling once their useful life is done with.

So, we’ve looked at a few key ways in which an AGM battery can be helpful. For one thing, they offer excellent performance in a wide range of temperatures. They also have high discharge rates and are generally easier to maintain than other kinds of batteries. We hope this guide has helped you understand more about the benefits of AGM batteries and how they might fit into your energy usage and storage needs.

 

What’s next?

They’ll walk you through your options – and give you insights so you can decide whether Crown’s AGM batteries are right for you.

What is an AGM Battery? Understanding the Pros and ...