AGM Deep Cycle Battery Guide

what is an AGM Deep Cycle Battery?

AGM deep cycle battery is an valve-regulated lead-acid battery. The AGM VRLA deep cycle battery are designed to be regularly deeply discharge using most of their capacity, unlike regular car batteries that only provide a short burst of power. The deep cycle AGM batteries are often used in applications that involve regulate deep cycles, such as off-grid solar power systems, backup power and AGM deep cycle batteries are often used in applications that involve regular deep cycles, such as off-grid solar power systems, backup power systems, and auxiliary power in recreational vehicles. Besides, AGM batteries are commonly used in marine applications, such as in boats and yachts where their resistance to vibration and shock make them a good choice.

AGM Deep Cycle Battery vs. Traditional Lead-Acid Battery

01 Cell Materials

AGM deep cycle batteries use Absorbed Glass Mat (AGM) technology, which means the electrolyte is absorbed by a fiberglass mat between the lead plates. This makes them more resistant to vibration, shock, and leakage, and allows them to be mounted in any position.

02 Depth of Discharge

Compared to the traditional lead-acid battery, AGM deep cycle batteries are designed to be deeply discharged and recharged repeatedly, using most of their capacity. The AGM deep cycle battery can withstand 80% or higher depth of Discharge(DoD) and have a longer cycle life while flooded lead-acid batteries only have 50% DoD.

03 Energy Density

AGM deep cycle batteries have a higher energy density, which means they can store more energy in a smaller and lighter package. They also have a lower self-discharge rate, which means they can retain their charge longer when not in use.

04 Charge Duration

AGM VRLA battery has shorter charging time than traditional lead-acid battery

05 Lifetime and Self-discharge

AGM batteries have a longer lifespan while not in use than their submerged counterparts because of their low self-discharge rates. A fully charged battery normally lasts about 3-5 years, however, an AGM can last up to 7 years with proper maintenance.

06 Costs

The AGM deep cycle battery is two to three times as much as conventional lead-acid batteries.

Related: Lithium Deep Cycle Battery Guidance

Benefits of AGM Deep CycleBattery

A AGM deep cycle battery has a high power output and a low internal resistance, which means it can charge faster and respond better to loading than other battery types.

AGM battery has a longer lifespan and a slower self-discharge rate, which means it can store more energy and retain its charge longer when not in use.

With the sealed electrolyte, the deep cycle battery AGM is maintenance-free, leak-proof, and does not require water refills.

They are robust, lighter and more durable.

Applications of AGM Deep Cycle Battery

Used as the backup battery for off-grid power system, for example, wind and solar power.

Used in marine applications, such as powering trolling motors, navigational devices, and sailing boats.

Used in recreational vehicles, such as powering RV appliances, lights, and electronics.

Materials handling, such as powering forklifts and floor sweepers.

SVC AGM Deep Cycle Battery

deep cycle agm battery svc

Ways to Charging AGM Deep Cycle Batteries

Charging a deep cycle AGM battery requires following some steps and precautions to avoid damaging the battery or reducing its lifespan. Here are some general guidelines for charging a deep cycle AGM battery:

Use a smart charger that can detect the battery type and adjust the charging voltage and current accordingly. A smart charger can also prevent overcharging and undercharging by switching to a float or maintenance mode when the battery is fully charged.

If you are not using a smart charger, set the charging voltage and current according to the specifications of your battery. The charging voltage should be between 14.4V and 14.8V, and the charging current should be between 10% and 30% of the battery capacity

Check the water level of the battery before charging, and add distilled water if needed. Do not overfill the battery, as this can cause electrolyte spillage and corrosion

Clean the battery terminals and connectors with a wire brush or a baking soda solution to remove any dirt or corrosion. This can improve the charging efficiency and prevent sparks or short circuits

Check the state of discharge of the battery with a voltmeter or a hydrometer. A fully charged 12V AGM battery should have a voltage of about 12.8V and a specific gravity of about 1.265. A fully discharged 12V AGM battery should have a voltage of about 10.5V and a specific gravity of about 1.120

Connect the charger to the battery, making sure to match the positive and negative terminals. Turn on the charger and monitor the charging process. The charger should go through three stages: bulk, absorption, and float.

The bulk stage is when the charger delivers the maximum current and voltage to the battery until it reaches about 80% of its capacity. The absorption stage is when the charger reduces the current and maintains the voltage until the battery reaches 100% of its capacity. The float stage is when the charger lowers the voltage and delivers a small current to keep the battery fully charged and prevent self-discharge.

The charging time depends on the battery size, the charger output, and the state of discharge. A typical 100Ah AGM battery can take about 5 to 10 hours to fully charge with a 10A charger, depending on how much it was discharged

Disconnect the charger from the battery when the charging is complete. Do not leave the battery connected to the charger for too long, as this can cause overcharging and damage the battery.

In Conclusion

This blog post has explore everything about deep cycle AGM battery. If you are finding the Deep cycle solar battery manufacturer, contact us. SVC are the supplier of solar products.

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