Best AGM Batteries (2022): Reviews & Comparison

AGM batteries are a great choice for many applications. They offer high power density, long cycle life, and deep discharge recovery.

There is an array of AGM battery types to choose from, and they all have different features and benefits to consider. It's' important to know what you need the battery for before making a purchase decision, as there may be trade-offs with performance that might not be ideal for your application or needs. Once you know what you're' looking for, it will be easier to find the right fit for your needs!

Our Pick
Renogy 12V Deep Cycle AGM Battery Renogy 12V Deep Cycle AGM Battery

Renogy's Deep Cycle AGM Battery is perfect for those who need a battery with a high capacity. This battery has a voltage of 12 volts and a capacity of 100 Ah, making it perfect for long-term use. It also has a low self-discharge rating, meaning that you can store it for extended periods of time without having to worry about it losing its charge. The standard 12 volt output makes it compatible with most devices, and its decent warranty guarantees that you'll be satisfied with your purchase.

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Budget Pick
Weize 12V 100AH Deep Cycle AGM Battery

Weize deep cycle AGM SLA VRLA battery is a 12V 100AH battery that is perfect for a wheelchair, scrubber, generator, lawn & garden, trolling motors, and other commercial applications. This sealed lead acid battery has a maintenance-free and spill-proof design that makes it ideal for use in any environment.

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Our Pick
Vmaxtanks AGM 12V 125Ah Deep Cycle Battery

The VMAXSLR125 AGM Rechargeable Battery offers a class-leading battery capacity of 125 Ah and a voltage of 12 volts. This maintenance-free battery is perfect for use in a wide range of applications, and features military-grade custom plates for extra durability. With a very low self-discharge rate, this AGM battery is ideal for use in vehicles, boats, RVs, and more.

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Are AGM batteries the best?

AGM batteries are a great choice for many applications. They offer several advantages over traditional wet-cell lead-acid batteries, including:

  • Lower self-discharge – AGM batteries have a much lower self-discharge rate than traditional lead-acid batteries, meaning they can be stored for longer periods without losing their charge.
  • Higher discharge rates – AGM batteries can discharge at higher rates than traditional lead-acid batteries, making them ideal for use in high-performance applications.
  • Greater resistance to shock and vibration – AGM batteries are more resistant to shock and vibration than traditional lead-acid batteries, making them ideal for use in harsh environments.
  • Longer life span – AGM batteries have a longer cycle than traditional lead-acid batteries. AGM batteries can last up to two or three times longer than standard lead-acid storage options at the same depth of discharge.

Are all AGM batteries the same?

AGM batteries are all similar, but small differences can be between them. AGM (Absorbed Glass Mat) batteries are a type of Lead-Acid battery. They use a fiberglass mat between the lead plates to help absorption and reduce gassing (the release of hydrogen and oxygen). This makes them especially well suited for applications that require a high power output over a short period, such as starting cars or powering heavy equipment. Most AGM batteries have similar specs, but there can be small differences in capacity, weight, and dimensions between brands. So it's important to do your research and find the one that best suits your needs.

Is an AGM battery worth the extra money?

There are a few things to consider when trying to answer this question. AGM (Absorbed Glass Mat) batteries are more expensive than standard lead-acid batteries, but there are a few reasons why they might be worth the investment. For one, AGM batteries are sealed and can be mounted in any position, making them ideal for use in vehicles or other applications where space is limited. They also have a longer lifespan than standard lead-acid batteries and can withstand much higher discharge rates without damaging the battery cells. If you're looking for a reliable and long-lasting battery option, an AGM battery may be worth the extra money.

What is the main disadvantage of an AGM battery?

The main disadvantage of an AGM battery is that it can't be topped off like a conventional lead-acid battery. If you overfill an AGM battery, the electrolyte will escape through the safety valves, and you'll lose performance and life from your battery. AGM batteries are also more expensive than lead-acid batteries, but they have several advantages, including longer life, greater vibration resistance, and lower self-discharge rates.

How long will an AGM battery last?

An AGM battery should last for 5-7 years, but it depends on how you use it. For example, if you frequently deep-cycle your battery (meaning you regularly drain it down to 0% and then charge it back up to 100%), it will only last for about 2-3 years. AGM batteries are a great option for people who want a durable and long-lasting battery, but it's important to note that they aren't ideal for everyone. If you're not sure whether an AGM battery is right for you, consult a qualified technician to discuss your specific needs.

How do I choose an AGM battery?

There are a few things you'll want to consider when choosing an AGM battery:

  • Size and weight. AGM batteries are smaller and lighter than lead-acid batteries, making them a good choice for vehicles that need to be as lightweight as possible.
  • Capacity. The capacity of an AGM battery is measured in amp-hours (Ah). Choose a battery with the right amount of Ah for your needs.
  • Temperature range. Make sure the AGM battery you choose can handle the temperatures you'll be using it in.

What is better, AGM or lithium battery?

AGM batteries are better for a few reasons. First, they have a much longer shelf life - up to 10 years instead of 2-3 for lithium-ion batteries. Second, they can be discharged down to 0% and still retain most of their capacity, while lithium-ion batteries should not be discharged below 30%. Third, AGM batteries do not suffer from the "memory effect" that lithium-ion batteries do. This means that you don't have to discharge an AGM battery before recharging it completely - you can top it off at any time without hurting the battery. Finally, AGM batteries are safer than lithium-ion batteries since they are less likely to explode or catch fire if they are damaged.

The best AGM batteries are those that fit your needs. If you’re looking for a battery to provide backup power during an outage, then an AGM battery is the perfect option. However, if you need a battery for daily use in a vehicle or other equipment, then you may want to consider another type of battery. By understanding the different types of AGM batteries and what each one offers, you can find the best option for your needs. 

About the author, Phil Borges

Phil Borges is a battery aficionado. He's written extensively about batteries, and he loves nothing more than discussing the latest innovations in the industry. He has a deep understanding of how batteries work, and he's always on the lookout for new ways to improve their performance.