An Overview of AGM Batteries

Sep. 09, 2024

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.

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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.

If you are looking for more details, kindly visit deep cycle agm batteries.

What's the Better Deep Cycle Battery: AGM or Gel?

So, you need a new 12V deep cycle battery for your golf car, your caravan, your utility vehicle, or your fishing boat? And you&#;re wondering which choice is better -- an AGM battery, or one of the gel variants on the market?

It&#;s a common question we get here at Battery Specialists, and we&#;re taking some time today to answer it for you.

We&#;re going to begin by looking at what, exactly, these batteries are. Then, we&#;ll examine each type in some detail. Finally, we&#;ll do a side-by-side comparison so you&#;ll know definitively why the AGMf deep cycle battery comes out on top.

Let&#;s get going, shall we?

What Are Deep Cycle Batteries?

We use all sorts of batteries every day without much thought to their types, or how they differ. We usually only worry about the batteries in our lives when they quit working, right?

There&#;s the button cell battery in your car&#;s keyfob. Then there&#;s the AA or AAA in your TV remote. Your car battery is a cranking or starter battery, giving a sudden burst of charge to start the motor.

How do these batteries differ from deep cycle batteries? It&#;s simple. Their Depth of Discharge.

A battery&#;s depth of discharge (DoD) is how long it can be used before having to be replaced or recharged. The level of discharge is how much power can be drawn from the battery at any one time.

The battery lifespan, or how long they last, in deep cycle batteries is much longer due to their high DoD.

Car batteries have a discharge rate of 2 to 5% each time you crank the motor over. The deep cycle battery in your fishing boat, however, can discharge up to 80% of its stored energy before needing a recharge.

That starter battery also has thinner, lighter lead plates inside. Deep cycle batteries, on the other hand, consist of heavier, thicker lead plates.

And that&#;s what defines a deep cycle battery from all the other valve activation lead acid batteries in existence.

Deep Cycle Absorbent Glass Mat (AGM) Batteries

Every deep cycle lead acid battery is made up of lead plates and an electrolyte solution of sulfuric acid that creates the chemical reaction that produces an electrical charge. You can see how this works in the video below.

AGM batteries are made with an absorbent fiberglass mat that absorbs the sulfuric acid electrolyte solution between the lead plates inside the battery. This mat is what gives the battery its name. And several advantages over gel batteries, as we&#;ll see.
There was a growing demand in the s for batteries that were lighter and safer than the old traditional lead acid batteries on the market.

The growing market in smaller, lighter aircraft, personal use vehicles like golf and utility cars, and mobility scooters for the aging population needed safer, lighter power sources. The deep cycle AGM battery was the answer.

Your car&#;s heated seats, electronically adjusted steering wheels, mirrors, and seats may also be powered by a small AGM battery.

Not only did AGM batteries meet power requirements in a less hazardous, more efficient way, the innovation of the glass mat meant that 12V deep cycle batteries could lose their rectangular shape, becoming cylinders and other &#;odd&#; shapes to fit their use.

The design of the glass mat separator also gives AGM batteries quite a bit of vibration resistance. This makes them perfect for motorbikes, quad bikes, boats, camping appliances, and other items which receive a good bit of bouncing, bumping, and vibrations.

Some other pros of using an AGM battery:

Can last 4 to 7 years
Cheaper &#; three times cheaper than lithium batteries, for example
Quickly recharge
Perform well in temps below 0&#; and above 80&#;

There are a few disadvantages to using an AGM deep cycle battery. They are:

Reduced charge over time &#; the AGM battery range (charge capacity) gets lower the longer in use
Sensitive to overcharging, shortening lifespan
Low specific energy load, making them unsuitable for some applications

Deep Cycle Gel Batteries

The &#;gel&#; in a gel deep cycle battery is a special type of thick silica gel that holds the sulfuric acid. The thick consistency of the silica gel doesn&#;t move around much, meaning these batteries can be installed at all kinds of angles and positions without fear of leakage.

The chemistry involved in gel batteries produces little to no fumes, making them ideal for situations where there isn&#;t much ventilation.

The use of the silica gel, as opposed to the typical water and sulfuric acid mixture, makes gel batteries virtually maintenance free.

Now, let&#;s take a look at some other advantages to using a gel cell lead acid battery:

No leaks - the gel doesn&#;t go anywhere
Install anywhere, in virtually any position
Resistance to discharge &#;death&#; as long as they are properly charged

There are serious disadvantages to using gel batteries over AGM batteries, though, and we can&#;t ignore them. Some of them include:

Higher costs - AGM batteries outsell them 100 to 1
Shorter life span - 2 to 5 years
Operating temps of -20&#; to 45&#;
Heavier - the gel adds a lot of weight
Lower power capacity than an AGM deep cycle battery
Charging issues - a gel battery requires a specialized charger or you shorten the cycle life and cycling performance of the battery, whereas AGM deep cycle batteries do not
Charging time - 5 times slower to fully recharge than an AGM battery
Overheating - gel batteries have been known to overheat and even catch fire

Now, let&#;s put all this together in a side-by-side comparison chart. We&#;ll look at the areas buyers are most frequently concerned with, and we&#;ve ticked each concern to show the battery that comes out on top.

AGM Gel Cost &#; Lifespan &#; Weight &#; Charging Times &#; Special charger needed &#; Power capacity &#; Operating temps &#; Safety &#;

As you can see, the AGM type deep cycle battery outperforms the gel type in almost every category. They are lighter, more powerful, longer lasting, can handle higher and lower operating temps, and don&#;t require special equipment to keep them charged.

Frequently Asked Questions

Is It Safe and Reliable to Buy Batteries Online?

You know it. It&#;s what we do. It&#;s how we operate. We wouldn't be in business if it weren&#;t. And just in case you need a bit more encouragement, we&#;ve written out the &#;whys&#; for you.

How Do Agm Batteries Stack up Against Flooded Batteries?

Your old-fashioned flooded batteries (deep cycle or otherwise) require regular monitoring and maintenance to ensure that the water cells don&#;t run dry.

Not so with AGM deep cycle batteries. You also don&#;t have the dangers surrounding the hydrogen gas that flooded batteries release when charging. And, there&#;s no need to keep an AGM battery upright.

What&#;s the Recommended Discharge Rate of an AGM Battery?

Most manufacturers only recommend discharging your AGM deep cycle battery to 50%. Each discharge above 50% can shorten the lifespan of the battery significantly. For example, discharging to only 30% can result in up to cycles, while discharging to 50% each use can see that number drop to 750 cycles.

Buy Your AGM Deep Cycle Batteries from Us

We carry one of the safest, longest lasting AGM batteries available, the Fusion 12V 14Ah AGM. It provides 30% more lifespan than other brands. It&#;s made of flame-retardant ABS plastic, too.

If using this battery in fire systems, you can get an extended 3 year warranty. And it&#;s approved for under the bonnet use, too, which is also covered by a warranty. Order your Fusion AGM deep cycle battery from us today.

Fusion 12V 14Ah
Deep Cycle AGM Battery

Are you interested in learning more about 300ah agm battery? Contact us today to secure an expert consultation!

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An Overview of AGM Batteries