AGM Battery Specifications and Care Tips

AGM batteries have the same functions as other types of batteries for cars with engines, although their characteristics are different. These batteries are a component charged with storing the electric energy necessary to start the engine and to support the generator when it is not able to meet the requirements of the vehicle’s electrical equipment.

Key Features of the AGM Battery

AGM battery - This type of battery is ideal for systems that require high power, such as the engine start function. This also applies to gel batteries, battery type VRLA (valve regulated lead acid), so called because of the presence of pressure relief valves to keep gas inside and prevent leakage.

AGM batteries, commonly known as dry batteries, do not contain electrolyte, they were developed in the 80s to achieve the desired performance in the field of military aviation. Its effectiveness is determined by the technology on which are based: sorbed glass mat ('glass separator absorbent').

As for the AGM battery components, the battery plates alternate with fiberglass panels, absorbents (similar to felt) saturated with 90% electrolyte (sulfuric acid solution, sulfate acting as a conductor). The rest allows you to absorb acid from the tank.

Advantages and disadvantages of AGM batteries

The main advantages and disadvantages of AGM batteries are as follows:

• High power density. They have a very low internal resistance, and this gives them the ability to generate and absorb large currents. Therefore, it is usually recommended for cars with large engines that require a large amount of energy. Although, their use on all types of vehicles is currently standardized. However, its specific energy is low.
• High resistance to multiple charge and discharge cycles. This advantage makes them recommended for vehicles equipped with a Start-stop system.
• Charging time. The AGM battery charges five times faster than the gel battery.
• Maximize storage usage. AGM batteries carry no danger when charged to the limit of 80%, while the normal charge limit on other types of batteries is 50%.

• Long lifespan.
• No maintenance required. The components are sealed and airtight, which does not require any maintenance. Although yes, it is necessary to adhere to some recommendations throughout its life cycle to avoid premature wear or damage.
• Heat transfer medium. Poor heat transfer, therefore, should be located away from heat sources. On the contrary, they have good behavior at low temperatures.
• They are very safe. Its absorbent fiberglass panels prevent the risk of acid spills due to possible breakage or vibrations. Additionally, these panels add resistance to the battery charger, making it more resistant to impacts.
• Ease. AGM batteries are lighter than lead ones (the most commonly used models in recent years).
• Congestion risk During overloads, current stimulates hydrogen production, which can lead to battery explosion.
• Self-discharge is reduced. Since they have the property of self-discharging, they do not require any action to prevent sulfation.
• Without calibration. Unlike gel, AGM batteries do not require reconfiguration of the system after a reboot.

AGM Battery Care Tips

AGM batteries do not require maintenance. However, a number of procedures must be followed as part of the periodic inspections recommended by the manufacturer. These tests show possible signs of damage or premature aging, which helps prevent vehicle breakdowns.

It should be borne in mind that a battery that has reached the end of its useful life can cause power surges and affect other components of the car, such as control units, starter and / or multimedia system. The checks required to take care of the AGM battery are to ensure that the terminals are in good condition, because if they are loose or oxidized, they can cause electrical failure.

Although, as a general rule, the average battery life can vary depending on usage, approximately 4 years. If they are forced to work in excess of charge cycles, drinking with a damaged alternator, the battery may wear out sooner.

When the time comes, you need a professional who will take care of replacing the battery. It can happen that poor installation can expose the car to electrical problems or shorten battery life.

Some vehicle models warn the user by using signs on the dashboard to replace or charge the battery. However, it is important to pay attention to signs of wear visible to the naked eye. The user can see the signal at the moment when charging problems occur, since the battery goes into charging mode much faster.

Conclusion

AGM batteries have many advantages, such as high power, fast charging speed, and their long service life. In addition, they do not require maintenance and periodic checks. Therefore, this is a very good option for all types of cars with engines, and not only for those with a high displacement.