Identification and differences between AGM and gel batteries

Identification and differences between AGM and gel batteries

In the world of batteries, there are different types and technologies that adapt to the needs of each user. Two of the most common options are AGM (Absorbent Glass Mat) batteries and gel batteries. In this article, we will explain how to identify and differentiate these batteries, as well as the main characteristics and advantages of each one.

How to identify an AGM battery?

Identifying an AGM battery is relatively easy. First of all, you must look for the label or inscription on the battery that indicates that it is of the AGM type. This information is usually clearly visible on the battery casing. Also, AGM batteries are often sealed in construction, which means that it is not possible to open the case to access the internal components.

Another way to identify an AGM battery is through its nominal voltage. AGM batteries usually have a nominal voltage of 12 volts, although 6 volt and 24 volt models are also available. If the battery has a different voltage, it is probably not an AGM type.

How to identify a gel battery?

Gel batteries also have distinctive features that will allow you to easily identify them. Like AGM batteries, gel batteries often have a label or inscription on the casing indicating their type. Furthermore, these batteries also have a sealed construction, which means that they cannot be opened.

An additional way to identify a gel battery is through its physical appearance. These batteries usually have a transparent or translucent casing, allowing you to see the gel inside. Also, gel batteries are often heavier than AGM batteries due to the density of the gel.

Main differences between AGM and gel batteries

Although both AGM batteries and gel batteries are popular options on the market, there are some key differences between them. Here are the main differences:

1. Construction technology

AGM batteries use a construction technology in which the electrolyte is absorbed into a glass mat, allowing for greater efficiency in energy transfer. On the other hand, gel batteries use a silica gel that acts as an electrolyte, which provides greater resistance to vibrations and shocks.

2. Life cycles

In general, AGM batteries have a longer life than gel batteries. AGM batteries can last 3-5 years, while gel batteries typically have a 2-3 year lifespan. However, it is important to note that the useful life of a battery can vary depending on various factors, such as use and proper maintenance.

3. Resistance to deep discharge

AGM batteries are more resistant to deep discharge than gel batteries. This means that AGM batteries can withstand a higher energy discharge without permanent damage. On the other hand, gel batteries are more sensitive to deep discharge and can be damaged if discharged below a certain level.

4. Cost

In terms of cost, AGM batteries are typically more expensive than gel batteries. This is due to the construction technology and additional features that AGM batteries offer. However, it's important to note that AGM batteries also offer greater durability and performance, which can offset their initial cost.

Frequently Asked Questions (FAQs)

1. Which is the best option, an AGM battery or a gel battery?

The choice between an AGM battery and a gel battery depends on your individual needs and preferences. If you are looking for a battery with a longer lifespan and greater resistance to deep discharge, an AGM battery may be the best option. On the other hand, if you value resistance to vibrations and shock, a gel battery may be more suitable for you. Also consider your budget, as AGM batteries tend to be more expensive.

2. Can I use an AGM battery instead of a gel battery?

Yes, in most cases you can use an AGM battery instead of a gel battery. However, it is important to note the differences in characteristics and performance of each type of battery. Be sure to check the specifications of your equipment and consult an expert if you have questions about compatibility.

3. How can I extend the life of an AGM or gel battery?

To prolong the life of an AGM or gel battery, it is important to follow some maintenance recommendations. Keep the battery properly charged and avoid deep discharge. Also, make sure you keep the battery clean and free of corrosion. Always follow the manufacturer's instructions and perform regular maintenance to ensure optimal performance.


In short, AGM and gel batteries are two popular options on the market. Both offer unique features and benefits, so choosing between them will depend on your individual needs. Remember to correctly identify each type of battery and consider factors such as construction technology, life cycles, resistance to deep discharge, and cost. By following the proper maintenance recommendations, you can enjoy optimum performance and longer life from your battery.

We hope this article has been useful to answer your questions about AGM and gel batteries. If you have any additional questions, feel free to leave a comment below. We will be happy to help you!

Until next time!

The team

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