What you should know about your AGM car battery? (Professionals recommend)

What are the advantages of an AGM battery?

  • Perhaps the greatest advantage of AGM is product life, lasting up to twice as long as a comparable flooded battery. From a performance perspective, the AGM battery boasts better recharge capability, while providing up to 3 times more starts per cycle and produces more power per cycle.

What is the main disadvantage of an AGM battery?

Cons for AGM Batteries They are sensitive to overcharging and high voltages, and require full charging between uses, which can make them un-suitable for some applications where returning them to a full charge is difficult.

How do you maintain an AGM car battery?

4 Effective Ways To Maintain Your AGM Battery and Keep It Durable

  1. Storing your AGM battery. When you are storing your AGM battery for longer periods, always remember to recharge.
  2. Sulfation prevention.
  3. Do not overcharge the AGM battery.
  4. Use the manufacturer’s recommended charger.

Should I leave my AGM battery on charge?

DO: Keep the battery as fully charged, as often as possible. No, these batteries do not develop a “memory” like some nickel-cadmium based batteries. Severely discharging and leaving the battery discharged can cause harm and shorten life in AGM batteries. Have you heard about sulfation?

How do I know if my AGM battery is healthy?

AGM Load Test

  1. Read the label on the side of the AGM battery to find out the ampere rating.
  2. Divide the CCA or Ah by 2 using a calculator.
  3. Turn on your load tester.
  4. Press the load-test start button.
  5. Read the load test meter.

What causes AGM batteries to fail?

In time, AGM batteries (including OPTIMA batteries) may fail. Failures usually happen when a starting battery is used in a deep cycling application. In many cases, AGM batteries that seem to be bad are perfectly fine. They are just deeply discharged.

How long do AGM batteries last?

12 Volt Gel or AGM batteries If kept in a charged state when unused, the common lifespan of a 12-volt Gel or AGM battery is up to six years. After five or six years of float voltage at an average ambient temperature of 25 ºC, the battery still retains 80 % of its original capacity.

How do you extend the life of an AGM battery?

6 tips to extend your AGM battery’s life

  1. Charge your battery regularly. It’s critically important to charge your battery as often as possible.
  2. Use smart chargers.
  3. Use temperature-compensated charging.
  4. Use the correct float voltages.
  5. Use an alternator temperature sensor.
  6. Minimize voltage drop.

How often should I charge my AGM battery?

AGM batteries use lead acid, therefore, you should avoid charging them when it is too cold or too hot. Preferably, charge the batteries when the temperature range is between 0° to 40° Celsius to increase their lifespan.

Can you refill AGM battery?

Charging AGM batteries requires you to fully recharge the battery. In fact, you’re supposed to slightly over-charge the batteries to give them a “top up”. Smart AGM chargers does that all for you, so you don’t need to worry if you’ve got one of those. This means the AGM battery would only be able to recharge up to 70%.

Are AGM batteries better in cold weather?

AGM batteries perform much better in low temperature environments than flooded lead acid batteries do. AGM batteries also recharge faster and are more resistant to cold weather damage. Since the electrolyte is held in the glass mat separators, it won’t expand when frozen like it will in a flooded battery.

Can you trickle charge AGM battery?

Many GEL, AGM and Calcium’s are better than regular lead-acid batteries but even so you should charge them back up regularly, or better still use a trickle charger (or solar panel) to keep them in top condition and extend their life.

What happens if you charge an AGM battery with normal charger?

You can use your regular battery charger on AGM or gel cell batteries. Some have different settings for charging flooded, gel and AGM batteries. Overcharging can kill these batteries.

Can you jump start an AGM battery?

Because AGM batteries are sensitive to charging, we recommend buying a charger and maintainer specifically designed for AGM batteries. Based on my reading (see bold-text above), you should not jump-start one. Use the recommended charger to recharge it. You can easily damage it otherwise.

How many volts should my AGM battery have?

Typically, a fully charged AGM (Absorbant Glass Mat) battery will read about 12.8 to 12.9 volts. If your battery is below 11 or so, volts, charged, you have an issue, such as a dead cell.

How long does it take to charge AGM battery?

The battery should be charged in 5 -6 hours using this type of charger, which is within the typical recommended manufacturer guidelines.

Complete Guide to AGM, Absorbent Glass Mat Batteries

This applies to any and all vehicles produced on the full-size GMT800 truck platform, including the Silverado, Sierra, Suburban, Yukon, Escalade, and Tahoe models. It is difficult to understand the seat mechanism on these vehicles, and it is not addressed in full in the Hayes book or anywhere else on the internet, so this is an exclusive GM Truck Club post. On another day, I will post some images. I’ll go through the fundamentals of troubleshooting, as well as typical issues and repair procedures for the heated seats, which are notoriously problematic.

Briefly summarized: these things are difficult, and I’m going to have to use a lot of words to describe them, so please bear with me and pay attention; if you want something easy, either get a 1997 or file a complaint with The General.

Known as the “memory seat module,” this is what the General names it.

It is this wire harness that connects each of the three seat motors, the chassis, the seat bottom and the seat back, among other things.

  • Rather than communicating through a physical circuit to the “memory seat module,” each door’s control switches for the heated seats instead use the chassis serial bus to interact with the memory seat module.
  • A temperature sensor is installed in each seat, and sensors are used to measure the current drawn by each of the four elements.
  • If the microcontroller senses anything suspicious going on, it shuts down the entire heated seat subsystem until the next time the ignition is turned off and back on again.
  • In addition to the three position sensors and one temperature sensor found in each seat, there is also a sensor that detects when the accelerator and brake pedals are pressed down.
  • If any of them short to ground, the “memory seat module” is unable to detect changes in temperature or seat position, thus shutting down the entire system.
  • The temperature sensor is integrated into the seat back heating pad, and the entire system, including the connections, is serviced as a unit.
  • Both of them are manufactured by Dorman, and you can get them for roughly $100 apiece from places like NAPA, Carquest, Rock Auto, and so on.

After that, a short to ground in the wiring occurs most frequently in the wire bundle that runs up to the seat back assembly, just adjacent to the seat belt lock.

Alternatively, because the chairs move and the wires stretch, a wiring short can occur pretty much anyplace under either seat.

The electrical wiring for the driver’s side seat is the next item on our list.

As a result, it is common for the connector between the chassis wiring and a seat frame to become overheated.

Finally, though it is unusual, the position sensor for the accelerator/brake pedal assembly might short out, causing the entire assembly to stop operating because it is powered by the same +5 volt power source as the rest of the vehicle.

The rest of us will have to make do with low-tech solutions, Unplug the grey connector near the floor under the driver’s seat if neither seat works at all, including no movement, no heat, or nothing at all – either intermittently or constantly.

Seek for any evidence of overheating on the orange and black wires in the connection pins and cut those two wires before crimping them onto a suitable bullet or spade connector.

Determine if one or both sides of a heated seat are impacted while dealing with heated seat problems.

Check to see if you can turn on the seat heat and then see if it will remain on for at least a minute or two.

As soon as the “memory seat module” detects a malfunction in either seat, it shuts them both off, so you have to do this immediately or you’ll trick yourself into believing that they’re both defective.

The odds are that you just need to replace the heating pad on the problem side if one side works fine but the other side’s lights turn on and then go off either immediately or after a few seconds, half a minute, or whatever time period you choose is true.

The bottom pad is the source of the problem if it works well and remains on for a minute or more; on the other hand, if it shuts off on “back heat alone,” the back pad is the source of the problem.

Your sensor wire may be shorted in some way if the seats only move in fits and the vehicle starts well.

It is visible moving on the pedal assembly if you keep the brake pedal down and gaze up there.

Having completed this step, you may start the engine to check if anything has been resolved; if so, you will need to purchase a new pedal position sensor from your local stealership to complete the task.

There is a recognized issue spot near the seatbelt clasp on the wire that goes to the seat back, but the short might occur elsewhere on the vehicle.

The fact that they’re all different made it take me a half hour to figure out how to get them all out.

I’ll wait.

Power seat modules can malfunction, however this is an uncommon occurrence that is both time-consuming and costly to repair.

There were some flash updates that came out a long time ago to remedy a problem with the heated seats shutting off without a valid cause – apparently the original software was a touch too paranoid – but most vehicles will have have those applied to their systems by now.

Tomorrow we’ll have some photos.


The construction of AGM type batteries is similar to that of regular SLA batteries, with the addition of a fiberglass mat that is put between each negative and positive plate to absorb electrolyte and prevent the battery from overheating. Because the mat functions as a sponge when it comes into contact with the electrolyte, the battery becomes non-spillable. The AGM battery maintains the electrolyte in place and functions by allowing the electrolyte to travel through the fiberglass mat, so producing the most possible surface area for the electrolyte to contact the plates without flooding the battery with too much fluid (see illustration).

It is possible to store less electrolyte in the battery while still generating as much energy as typical SLA batteries by using this method.


When the majority of people think about AGM batteries, they are most often thinking of deep-cycle applications. However, not all AGM batteries are designed to be used in deep cycle applications. However, because an AGM battery has a depth of discharge (DoD) of 80 percent compared to a normal flooded battery’s DoD of 50 percent, it is a popular choice for starter batteries as well as for deep cycle applications. This is due to the fact that it has a low internal resistance and can quickly supply high current loads.

This is because flooded batteries can fail after only a couple of years of usage due to the repeated cycling.

Our general purpose (PS) and long life (PG) battery families, on the other hand, are built around the Absorbent Glass Mat separator, which increases the electrolyte’s surface area and so improves battery performance.


As mentioned previously, one of the advantages of an AGM battery is that they may be charged up to five times quicker than a typical flooded battery. We recommend that you follow the instructions in this guide to charging sealed lead acid batteries to ensure that you get the most out of your AGM battery, just like you would with any other sealed lead acid battery.


AGM batteries are recyclable, to be sure. An AGM battery may be recycled to a greater than 98 percent degree. When it comes to lead acid batteries, the battery industry is quite proud of the fact that they are one of the most widely recycled items on the globe.

AGM batteries are ecologically beneficial and simple to recycle; they can be recycled at practically all recycling sites, as well as many automobile retailers and hundreds of other locations. AGM batteries are available for purchase from a variety of sources.


There are several advantages to using AGM technology over traditional flooded battery architecture. Due to the fact that the fiberglass mat retains the acid, there is a lower likelihood of the battery sulfating as a result of its use. It is because of this property that it is able to reach a greater depth of DoD than its flooded counterpart. Since AGM batteries have lower internal resistance and a lower self-discharge rate than flooded batteries, they don’t need to be topped up as frequently as flooded batteries do when stored for an extended period of time.

  • However, they will charge more quickly than flooded batteries.
  • AGM batteries are particularly well suited to power sport applications because of their ability to absorb vibrations due to the combination of their densely packed design and the mat contained inside them.
  • However, one of the disadvantages of the AGM battery is its cost, which is somewhat greater than that of a flooded battery.
  • In fact, one of the reasons flooded batteries are still widely used is their high cost (usually seen more in motorsport applications).
See also:  CV joint symptoms? (Solved)


Gel batteries are a popular alternative to flooded and AGM type batteries, and they have several advantages. Gel batteries are still maintenance-free since their cells are sealed and they employ a recombination mechanism to prevent the escape of their gasses. The electrolyte of a Gel battery is a thixotropic gelled sulfuric acid, which is different from a conventional battery. When comparing a Gel battery to an AGM battery, you will see that the rated capacity of the Gel battery will decrease much more quickly than the rated capacity of the AGM battery when the ambient temperature gets cooler (below 32 degrees F).

On the plus side, Gel is more acid restricted than most other materials, allowing it to have a somewhat longer service life in some applications.


When comparing AGM with lithium batteries, there are some important distinctions. When it comes to selecting the most appropriate battery for your application, you must first determine exactly what you expect to receive out of the battery in the first place. It depends on whether it is a deep-cycling application, a high-rate discharge application, or a float standby application. Is there a built-in charger for a certain chemical in the application currently available? What is your financial situation?

This guide should be able to assist you in determining if AGM is the best choice for your application in the first instance.

This is due to the fact that they are lighter, need less maintenance, and have a longer life span.

When it comes to choosing between AGM and lithium batteries, it all comes down to your application and what you want to get out of the battery in question.

If you have any queries concerning whether battery is better appropriate for your application, please do not hesitate to contact us by phone or email. Categories:Blog,Batteries


Find the best battery for your application right now. Many of Power Sonic’s extensive line of sealed lead acid batteries are equipped with the most up-to-date AGM technology. Lead Acid Batteries with a Sealed Liquid Capacity

You may also be interested in…

Categories:Blog,Batteries Before we go into what a deep cycle battery is, it’s vital to grasp a few battery fundamentals, such as what a cycle is and what depth of discharge a battery has. More information may be found here.

Choosing and Charging Lithium RV Batteries

Categories:Blog,Lithium If you are an RV owner, or if you want to become one in the near future, you are probably already familiar with the many sizes and configurations of recreational vehicles available on the market. More information may be found here.

What is a sulfated battery and how do you prevent it?

Categories:Blog,Lithium In the event that you are an RV owner or want to become one in the near future, you are probably already familiar with the many sizes and options available for recreational vehicles on the market. To find out more, please read the following:

The Power Sonic Brand Promise

Our battery products, which are manufactured with the most up-to-date technology and strict quality control, are meant to outperform the competition in terms of performance and dependability.


Our laser-like focus on providing a great end-to-end client experience distinguishes us from the competitors. Throughout the whole process, from the initial inquiry to the final delivery and all in between, we consistently surpass our clients’ expectations.


Every time, deliveries are made on schedule and according to client specifications. We take great satisfaction in providing customized service solutions that are tailored to fit the individual needs of our customers.

What is an AGM battery?

In 160 years, little has changed in the design of the lead-acid battery. Since its invention in 1859, the same 160-year-old technology has been used to start your automobile and practically every other car on the planet, with just slight modifications here and there along the way. It’s still made out of thin lead plates, sulfuric acid, and water, as before (plus a durable, polypropylene case.) Small modifications and alterations were made over the course of several years. Some of them are even sealed, so you don’t have to worry about adding water.

He might be astonished to learn how little has changed in the lead-acid battery over the course of 160 years.

What sparked the next generation of car batteries?

Driving in 2019 is not the same experience as it was in 1969, for a variety of reasons. Touchscreens. Driving with the assistance of artificial intelligence. Seat warmers are available. Vehicles capable of achieving fuel efficiency in the upper 20s to mid-30s are on the market. Autonomous driving is becoming more popular. Seat belts that automatically tighten. Engines may be started and stopped. Starting at a distance, even with a phone, is possible. Backup cameras with pre-programmed route-finding algorithms Satellite-connected radios and high-speed wireless internet connections are now available.

Alexander Graham Bell was in a bad way.) The problem is as follows: Planté’s lead-acid battery can’t keep up with all of the demands on it for very long.

They’re also rather affordable to produce.

Your air conditioner will be significantly less effective. The next generation of batteries will be able to do so. The absorbed glass-mat (AGM) battery is a good example of this.

What is an AGM Battery?

An AGM battery is a type of automobile battery that is designed to perform two functions: to give strong bursts of starting amps and to run electronics for an extended period of time. Lastly, here’s what’s really important: They have a greater life expectancy than a standard flooded battery. One of the numerous improvements made to Planté’s original train light battery, which goes by the term “absorbed glass mat,” is the addition of a “absorbed glass mat.” The ultra-thin lead plates will be cushioned by glass matting that will squish like a sponge.

  • More lead equates to more strength.
  • During the charging process, AGM batteries include valves that regulate the quantity of hydrogen and oxygen gas that is allowed to escape.
  • AGM batteries, which were first introduced in the late 1970s, were primarily used as backup power for telephone boxes and early computer rooms.
  • They’re now showing up in regular automobiles and pickup trucks.
  • What is the primary difference between an AGM battery and a traditional flooded battery?

What’s the Difference Between an AGM and a Regular Car Battery?

AGM automobile batteries provide several advantages over typical flooded batteries, including the following:

  • Increased number of starts per battery
  • Faster recharging Construction that is more durable
  • Handling is less dangerous. The battery’s lifespan is extended by using special valves.

AGM batteries have the capacity to start an engine more than 60,000 times throughout the course of their lifetime. The number of starts you’ll receive with a normal battery is more than three times higher. Furthermore, AGM batteries recharge at a faster rate than conventional batteries. When you start your car, the battery is only slightly depleted before the alternator takes over and recharges it. When this occurs, the alternator recharges the battery and ensures that all of the vehicle’s electrical components are operational.

In addition, they are classified as spill-proof, which means that the restrictions for carrying them by air or road are less stringent.

Instead, it’s merely a matter of science.

How AGM Batteries Work

The superpowers of an AGM battery are derived from two innovative improvements to Planté’s innovation, as well as a slew of tiny design tweaks that significantly enhance the capabilities of automobile batteries. First and foremost, a valve prevents evaporated water from exiting the battery casing. This may not appear to be much more than the inverse of the one-way valves seen on coffee bean bags at first glance. However, this small approach is the key to extending the life of an AGM.

  • Lead, sulfuric acid, and water are still the building blocks of its fundamental chemistry.
  • In order to allow a chemical reaction to take place between the paste on the plates, you must first remove the sulfuric acid from the solution.
  • However, as electricity divides water into hydrogen and oxygen gases, there is always the possibility of some water being lost in the process.
  • The valve on the AGM prevents such gases from escaping.
  • When you use the incorrect charger for an AGM, the electricity must flow through everything and everything it can to reach its destination.
  • Once the safety mechanism is activated, gas is released into the battery to relieve the pressure that has been building within it.
  • They are the GM in AGM (absorbed glass-mat) batteries, which stand for glass-mat battery.
  • Instead of the free-flowing liquid found within a conventional automobile battery, the AGM stores its charge in sponges that are saturated and adhere to the lead plates.

Standard batteries are outclassed by AGM batteries in terms of power, speed, long life, and durability. So, why are AGMs found in less than 9 percent of the automobiles on American roads today?

Driving evolved. So have our expectations.

AGM batteries are no longer required in 91 percent of automobiles on the road today. AGM batteries, on the other hand, will not remain on the periphery for long. These improved batteries are being used by happy owners on American roadways. However, they are not aware of this until they drive into a business. (Do you know which battery is used in your automobile?) Hybrid electric cars and vehicles with start-stop technology require a high-capacity battery to keep the air conditioning operating even when the engine is shut off.

  • It was possible to count the number of car types that required an AGM battery on the fingers of one hand in 2014.
  • A large number of 2015 and 2016 models continue to use a conventional battery, although an increasing number of vehicle models are incorporating always-on technology.
  • And that’s what an AGM is.
  • The more our expectations of our phones, the greater our expectations of our automobiles.
  • Technology and new inventions only serve to broaden the range of ways in which engineers and automobile manufacturers represent these principles.
  • Seatbelts that automatically tighten.
  • Windows with a touch screen.
  • Perhaps there could be a flying mode as well.
  • As long as you’re using the proper battery, that is.

What is an AGM Battery?

Optima If you purchase a product after clicking on one of our affiliate links, The Drive and its partners may get a commission. More information may be found here. While electric cars have changed the concept of a car battery, the 12-volt brick that sits in your engine compartment will continue to serve you well in your classic internal combustion vehicle (ICM). Because of its small size, it is responsible for both powering the starter and also storing energy that may be utilized to power all of the gadgets on your car.

Even though flooded lead-acid batteries, which contain a liquid electrolyte solution that sloshes around within, continue to be used in the vast majority of cars, there is a relatively new participant in the field: AGM batteries.

The Drivehas put up a tutorial that explains how they function, how they vary from ordinary batteries, and why you would want to use one of these batteries. Stay with us as we address the question, “What exactly is an AGM battery?”

What Is an AGM Battery and What Is It Used For?

Unflooded lead-acid batteries are often used in automobiles, however AGM batteries are a 12-volt vehicle battery that can be used as an alternative to these batteries.

What Does AGM Stand For?

AGM is an abbreviation that stands for Absorbent (or Absorbed) Glass Mat (or Material).

How Does an AGM Battery Work?

An electrolyte, commonly composed of sulfuric acid and water, is contained within a battery’s interior, where positive and negative lead and lead oxide plates operate to attract or release electrons when they react with the electrolyte. Because of the use of small glass fibers, AGM batteries are able to contain and suspend the electrolyte combination like a sponge while maintaining uniformly distributed contact with the active lead elements on the plates. In a series circuit, the electrons pass through six cells, with each cell operating at around 2 volts, for a total voltage of 12 volts.

Pros and Cons of AGM Batteries

AGM batteries are a significant improvement over flooded batteries in terms of spillage, but they are not without their own drawbacks.


  • It is completely sealed and requires no maintenance. There will be no spilling. It was claimed that it would not deteriorate
  • Claims to be free of sulfate and corrosion. Shock resistance is said to be effective. It was claimed that the discharging and recharging efficiency has improved
  • It was said to have more beginning power


  • Overcharging and undercharging are both problematic
  • Over time, the charging capability of the battery decreases. Generally speaking, the price is higher.

AGM Battery FAQs

You’ve got the questions, and The Driv e has the solutions!

How Long Do AGM Batteries Last?

AGM batteries, according to manufacturers such as Optima and Interstate, might last two to three times longer than standard flooded lead-acid batteries. The normal lifespan of a traditional battery is three to five years, depending on a variety of factors such as the vehicle’s operating environment, driving circumstances, and driving behaviors. OptimaA Optima battery with a yellow top.

See also:  Should you hire a mobile mechanic? (Question)

What’s the Difference Between a Regular Battery and an AGM Battery?

It is the electrolyte’s condition that is the most significant distinction between the two. The electrolyte fluid in classic flooded lead-acid batteries is free-flowing and has the potential to leak. AGM batteries are defined by the fact that the electrolyte is suspended and kept within a glass substance.

What’s the Difference Between an AGM Battery and a Gel Battery?

For the electrolyte to remain in place in gel batteries, a separate mechanism is used. Gel batteries, for example, often utilize a chemical agent such as silica to form a gel-like material that is less susceptible to movement than other types of batteries. In the world of lead-acid batteries, both gel and AGM batteries are classified as Valve-Regulated Lead-Acid (VRLA).

Can You Use a Regular Battery Charger On an AGM Battery?

Given the sensitivity of AGM batteries to charging, we recommend that you use a charger and maintainer that are particularly intended for AGM batteries.

Does a New AGM Battery Need To Be Charged?

No, fresh batteries are pre-charged and ready to use!

Pro Tips for Changing an AGM Battery

Over the course of their combined careers, our professionals at The Drive have replaced more batteries than they have diapers. What we’ve discovered thus far is as follows:

  • Wear paint-friendly clothing, which is clothing that does not have any hard objects such as buttons, zippers, or fasteners, or clothing that is made of natural fibers. When you’re bending down to pick up that big battery, you run the risk of scratching the paint of your vehicle. Keep anything metal, such as a tool, away from the battery terminals when they are both being used. This will cause the battery circuit to be closed, resulting in sparks. If all of this seems too difficult, large car parts retailers such as AutoZone and Advanced Auto Parts provide free battery testing and charging services
  • If all of this seems too overwhelming,

Featured Products

Charger and maintainer for smart batteries from BMK. Noco Genius 1 Smart Charger and Maintainer with Automatic Functions Tender Junior Charger and Maintainer for Lithium-Ion Batteries Do you have a question? Do you have a pro tip? Send us an email at [email protected] if you have any questions. TO BE CONTINUED READING

  • How to Change a Car Battery (with Pictures) The fundamentals of replacing a dead battery with a fresh one are outlined in detail here: How to Charge a Car Battery. The most effective methods of recharging your car’s primary battery READ IMMEDIATELY
  • Chargers for AGM batteries that are the best: Bringing Your Vehicle’s Batteries Back to Life Save both time and money by using one of these high-capacity AGM battery chargers.READ MORE: What Does the Battery Light Mean and Why Is It On? It’s the nefarious cousin of the check engine light. Check out the Best Car Batteries (ReviewBuying Guide) for 2021 right now! These are the batteries that are in the forefront of the charge. READ IMMEDIATELY

AGM Batteries – What You Need to Know

As previously mentioned, we’ve written about the AGM battery on several occasions, first introducing it to our audience at a time when they were only found in a small number of new vehicles, and then discussing some of the unique service aspects of the AGM battery as opposed to the traditional flooded lead acid battery. AGM batteries have seen tremendous growth in popularity throughout the time that we have been writing this blog, particularly for new vehicle installs, replacement battery applications for vehicles, and non-vehicle installations.

It is becoming increasingly critical for technicians, repair shops, vehicle owners, and anybody else who has AGM batteries installed in their equipment to be able to diagnose and maintain this flexible battery type as technology advances.

In recent years, a number of market forces have combined to fuel the expansion of AGM battery usage.

This includes the use of AGM batteries in the great majority of vehicle Stop-Start applications in the North American market, which accounts for the most majority of vehicle Stop-Start applications.

The result is that a large number of original equipment manufacturers (OEMs) have chosen to install AGM batteries in their Stop-Start system configurations in order to withstand the stress caused by the repeated starting and periods of battery-only system support during stops that are characteristic of the systems.

  1. What Is the Difference Between AGM and Other Batteries?
  2. In an AGM battery, each lead plate is wrapped in a fiberglass mat material, which allows the plates to be extremely thin and allows for the incorporation of more plates into the battery, resulting in increased power (because a battery’s output is a function of the total plate surface).
  3. This is in stark contrast to the free liquid that may be found in a flooded lead acid battery.
  4. In order for its properties to vary from those of a flooded lead acid battery, these variations in construction must be taken into consideration.
  5. AGM batteries are also substantially more vibration resistant than other types of batteries, allowing them to be utilized in situations where they would be subjected to more severe conditions.
  6. Because of their inbuilt AGM batteries, our handheld jump starters, for example, may be used and stored in a range of scenarios and conditions without experiencing any problems.
  7. Because an AGM battery has a completely different design than a flooded battery, the differences in construction have ramifications for how these batteries are serviced, particularly when it comes to charging and maintaining these batteries.
  8. This implies that caution must be exercised in order to avoid overcharging (increasing the voltage on) an AGM battery.
  9. The most essential thing to remember is that any charger or maintainer you use on your AGM battery must be AGM compatible or AGM optimized, otherwise your battery will not perform properly.
  10. Almost all of the SOLARPRO-LOGIXandCHARGE IT!battery chargers and maintainers are safe to use with AGM batteries, and most models include charging routines that are specifically designed for maximum AGM battery charging performance (more below).

What else should you keep in mind when it comes to maintaining and servicing these batteries, other from utilizing a correctly calibrated charging device? Here’s a simple checklist that I altered and supplemented from an article published on atpractical-sailor.com. It goes as follows:

  • Charged on a regular basis if feasible. Lead acid batteries (of any type) do not like to be left in a discharged state for an extended period of time. When recharging, make certain that the battery’s State of Charge has been restored to greater than 85 percent before restoring the battery or device to service. Keep the battery’s State of Charge from being discharged more than half way. Ensure that you are using a temperature compensated charger (all PRO-LOGIX devices are temperature adjusted). It is recommended that you charge at a pace that is no larger than 20% of the battery capacity being charged. As a result, if you have an 80AH battery, charge it at a rate of 16A or less. If you want to get the most out of your battery life, you should keep it on the low and slow setting.

You don’t have to worry about anything when it comes to AGM charging since we have you covered! Many advantages come with our PRO-LOGIX series of battery chargers for shops, technicians, fleet service facilities, and customers alike, but one of the most significant advantages is that PRO-LOGIX chargers are capable of charging a wide range of lead acid battery types, including AGMs. Traditional AGM batteries, Spiral Wound batteries, Start-Stop AGM batteries, and pure lead AGM batteries are all examples of this type of battery.

Apart from that, PRO-LOGIX provides automatic operation, temperature compensation for precise charging accuracy, enhanced maintenance mode (on most models) for optimal long-term charging, reverse polarity protection, special Soft Start and Recondition modes to properly handle problem batteries, and the convenience of a forced start mode that allows the charger to activate when connected to a fully discharged battery.

And it’s for this reason that they’re “Not Just Smart – Intelligent.” Which AGM batteries have you used and what was your experience like with them?

Do you have any service concerns that you’d like to share?

Three Misconceptions about AGM batteries

Some automobiles’ trunks and under-seat storage spaces are becoming increasingly crowded with batteries. If the battery is not visible under the hood, the likelihood is that it is an absorbent glass mat (AGM) or gel cell battery. Because AGM batteries are sealed, they prevent acid spillage in the event of an accident. They can also be put at an oblique angle if necessary. Because these batteries offer a lot of power for their size and weight, car manufacturers may reduce the weight of their vehicles by a few pounds.

  1. Three common misunderstandings concerning AGM batteries are as follows: When charging AGM or gel cell batteries, you can use your usual battery charger.
  2. These batteries prefer to be charged slowly and at a low current.
  3. Some chargers have distinct charging settings for flooded, gel, and AGM batteries, for example.
  4. In addition, alternators are not the same as chargers.
  5. If a battery has been depleted to the point that it is no longer capable of starting the car, it is important to use a charger as soon as possible to ensure that the battery is properly recharged.
  6. False.
  7. It is possible that older capacitance battery testers/analyzers will not be able to read these batteries reliably.
  8. It is possible that old-fashioned load tests will not produce conclusive data.
  9. True and False are both correct.
  10. Battery Sensor Modules or systems of a similar nature are seen in newer automobiles.

If the battery in these systems is replaced, they must be recalibrated using a scanning instrument. If the system is not properly calibrated, the alternator may overcharge the new battery, resulting in the battery failing soon after it is installed.

9 Top Car Batteries Recommended by Experts

Courtesy Regardless of whether your vehicle is electric, internal combustion, or remotely operated, it will have a battery. In this section, we’ll talk about internal combustion engines and what you should know before buying one. Lead acid batteries and absorbed glass mat batteries are the two types of batteries available (AGM). Lead acid batteries are an older technology, and they no longer require refilling with distilled water, but AGM batteries are more contemporary and may be used in cars with more complex electrical systems, such as hybrid automobiles.

  • Lead acid batteries are less expensive, however they do not maintain their charge as well as AGM batteries.
  • When your car is parked for an extended length of time, those are the greatest options.) They’re also preferable for automobiles that have high-powered radio systems or other electrically demanding accessories.
  • Some batteries are equipped with both.
  • According to The Family Handyman, the typical battery lifespan is between four and six years.
  • In contrast to CCA, which evaluates how well a battery can start in cold weather and is more significant for purchasers in northern states, reserve capacity gauges how long a battery can last if your charging method fails.
  • In order to distinguish between cranking amps and cold cranking amps, the temperature at which cranking amps are measured is 32 degrees Fahrenheit, and cold cranking amps are recorded at 0 degrees Fahrenheit.
  • Just be sure to double-check your measurements and specifications!

This Optima battery boasts an 800 cold cranking amps and a reserve capacity of 100 minutes, making it an excellent choice for heavy-duty applications.

Battery Type: AGM (ACDelco 94R) This AGM battery offers 850 cold cranking amps and a reserve power of 140 minutes when fully charged.

Tough Max Battery was put through its paces by Motorcraft.

It features a fairly large battery with a 150-minute reserve.

Battery for the XS Power D3400 In addition to being spill-proof, this pricey battery from XS Power can be placed in any position.

Although this battery does not promote cold cranking amps, it does produce 1,000 cranking amps when the temperature is 32 degrees.

This Champion AGM battery features a 48-month free replacement guarantee, 1,000 cranking amps, and 850 cold cranking amps.

It can hold a reserve for up to 140 minutes.

Similarly to the RedTop, this battery is shock and vibration resistant.

AGM Battery with DieHard Platinum Technology Cold cranking amp rating of 740 and reserve time of 115 minutes are both provided by this DieHard.

Odyssey Drycell Battery is a rechargeable lithium-ion battery that is designed to be used in a variety of applications.

It is equipped with both top and side terminals.

This battery features top posts, a cold cranking amp rating of 850, and a reserve duration of 150 minutes.

This material was generated and maintained by a third party and imported onto this website in order to assist users in providing their email addresses for further consideration. You may be able to discover further information on this and other related items at the website piano.io.

Charging An AGM Battery: How To Do It Right To Guarantee Long Service

AGM batteries are among the most highly sought-after batteries on the market today, owing to their low resistance, high electrical dependability, long life, adaptability, and low maintenance costs, among other characteristics. Despite these significant advantages, many users fail to give AGM batteries the care they require when charging them. One of the most important things you can do to guarantee that your AGM battery lasts for many years is to charge it correctly. Owners of automobiles, boats, and recreational vehicles who disregard this advice run the danger of losing their batteries, time, and money far more quickly than they anticipated.

  1. Consequently, in this post, we provide three suggestions to assist you in charging your AGM battery in the proper manner.
  2. Contrary to popular belief, battery chargers do not come in a single size that fits all needs.
  3. For example, little batteries require small chargers, but large batteries necessitate the use of larger rechargeable batteries.
  4. As a result, only the charger advised by the manufacturer should be used for charging your AGM battery.
  5. Furthermore, it is reasonable to presume that the billing mechanisms are the same.
  6. For example, lithium-ion laptop and phone batteries are used, but AGM batteries are used in a wet environment.
  7. When charging AGM batteries, on the other hand, you must charge them to their maximum capacity or slightly above it.
  8. It is important to consider the temperature.
  9. You should not charge your battery if your temperature goes outside of this range.
  10. This will assist you in charging your battery throughout the year.
  11. However, if you do not charge them properly, you can substantially shorten their lives.
See also:  Test car battery before winter? (Correct answer)

BU-201a: Absorbent Glass Mat (AGM)

AGM technology first gained popularity in the early 1980s as a sealed lead acid battery for use in military aircraft, vehicles, and uninterruptible power supplies (UPS) in order to decrease weight and increase dependability. The sulfuric acid is absorbed by a very tiny fiberglass mat, which prevents the battery from spilling acid on the ground. This permits transportation without the need to comply with hazardous material regulations. A cylindrical cell may be formed by winding the plates together into a flat configuration that looks similar to a normal flooded lead acid pack housed in a rectangular casing.

  • AGM is completely maintenance-free, has high electrical reliability, and is significantly lighter than the flooded lead acid kind of battery.
  • Withstanding low temperatures and having a minimal self-discharge, the battery performs admirably.
  • To achieve the same cycle life as the AGM, the depth-of-discharge is defined at 80 percent; on the other hand, the flooding is specified at 50 percent for the same cycle life.
  • The majority of AGM batteries are mid-sized, with capacities ranging from 30 to 100Ah.
  • High-end automobiles with power-hungry equipment such as heated seats, steering wheels, mirrors, and windshields frequently have them because they are custom made to fit their dimensions.
  • AGM batteries are the favored choice for high-end bikes.
  • In addition to maritime and robotic applications, AGM batteries are also employed in motor home and recreational vehicle applications because to their excellent performance in freezing climates.
  • The conventional flooded variety is just not durable enough, and frequent cycling results in a significant reduction in capacity after only two years of usage in most cases.
  • 2.40V/cell or more is OK; however, the float charge should be lowered to between 2.25 and 2.30V/cell to avoid overcharging the battery (summer temperatures may require lower voltages).
  • (See BU-403: Charging Lead Acid for further information.) AGM and other sealed batteries do not tolerate high temperatures and should be positioned away from the engine area to avoid damage.

When the battery core hits 49°C (120°F), manufacturers recommend that the charging be stopped. The advantages and disadvantages of AGM are summarized in Table 1.

  • Spill-proofing is achieved by the use of acid encapsulation in matting technology. Specific power is high, internal resistance is low, and the system is sensitive to load. The charging time is up to five times quicker than using flooding technology. Improved cycle life as compared to flooded systems Retention of water (water is formed when oxygen and hydrogen combine to form oxygen)
  • Because to the sandwich construction, there is greater vibration resistance. It is resistant to freezing temperatures. If the tank is not constantly top-charged, it will be less prone to sulfation. There is less electrolyte and lead in this variant than in the flooded version.
  • Manufacturing costs are higher than they were before the storm
  • Overcharging is a concern (AGM tolerances are stricter than gel tolerances)
  • A progressive drop in capacity (gel has a performance dome) is seen. Specific energy is quite low. It must be kept in a charged state (which is less necessary than being inundated).

Table 1: The advantages and disadvantages of using AGM. It is based on the essential new fourth edition of ” Batteries in a Portable World – A Handbook on Rechargeable Batteries for Non-Engineers “, which can be purchased at Amazon.com.

Don’t Kill That New AGM Battery

Many sailors have already had their first long weekend on the water this year, and some may have noticed that the pricey absorbed glass mat (AGM) battery they purchased last season or the year before isn’t keeping a charge as well as it did when it was originally installed on the boat. There are a variety of factors that might contribute to diminished battery capacity in an AGM battery, but the most common reason for this is improper maintenance and charging procedures. When batteries are discharged, battery makers want them to be recharged to their full level of charge as soon as possible.

  • When a sailor uses his AGM battery in this manner, he is committing what is known as partial state of charge operation, and if he continues to do so, his battery will perform substantially worse than a less expensive deep-cycle flooded battery bank.
  • As part of a complete update of our 2006 test on sealed valve-regulated lead acid batteries (also known as gel or absorbed glass mat batteries), we conducted an additional test in 2015.
  • The results were shocking.
  • Here are some recommendations that came out of our testing that will help you get the most out of your AGM battery and make it last longer.
  1. It cannot be overstated how important it is to charge to capacity as often as possible. With each charge cycle, restore the battery’s state of charge (full capacity) to at least 80-85 percent of its original level, and strive to achieve 100 percent state of charge as soon as possible after that. Make sure that you don’t consistently discharge your bank’s level of charge below 50%. Size your most powerful charge source, which is often an alternator or inverter-charger, to provide a minimum of 20% of your bank’s total capacity. Odyssey TPPL AGMs prefer a charge current of 40 percent of their amp-hour capacity as a minimum. Make use of intelligent chargers. Not all smart chargers are created equal
  2. Not all smart chargers are created equal. Temperature compensated charging should be used for all charging sources
  3. Sophisticated solar controllers should be used. Some solar controllers begin each each day with a fresh absorption voltage charging cycle, whilst others do not. Leaving AGM batteries unsupervised on-the-hook, with their low self-discharge and low parasitic load, is not a good idea since it is harmful to their health. Smarter controllers are equipped with a voltage trigger that allows them to be brought out of float mode. If they do not drop below the trigger voltage, they stay in float
  4. Using the proper float voltages for AGM batteries is an important component of battery maintenance. In many cases, chargers that employ dip switches for programming do not produce the proper voltages for both absorption and float settings. If at all feasible, use an alternator temperature sensor and an external regulator. AGM batteries place a high demand on an alternator, and the heat generated might decrease the alternator’s life or cause it to fail prematurely. To ensure the greatest charging performance, keep the voltage drop in the system wiring to a minimum. Even a 3 percent voltage loss at 14.4 volts results in just 13.96 volts at the battery terminals after the battery is fully charged. Correct voltage sensing prevents you from achieving the quickest charging potential, which is especially important for short-duration, high-current charges. Always be aware of your current battery’s condition of charge. In the case of a battery monitoring device, this will improve the total cycle life of the battery. Check that the voltage reading you are obtaining is as precise as possible when determining the status of charge using voltage
  5. The use of equalization for wet cell batteries (carefully monitored charging at a higher-than-normal voltage to restore lost capacity) is typically not suggested for AGM batteries, despite the fact that they can benefit from it. Some manufacturers, such as Lifeline, do, however, say that careful equalization is achievable with the batteries they sell. This procedure must be continuously watched, and the best technique might differ depending on the boat. Depending on your boat, Lifeline may assist you in developing a customized equalization program. Installations should be avoided in engine rooms and other high-temperature regions of the yacht. Heat reduces the battery’s life span.

How Do I Know If My Battery Is AGM-Meaning And Changing_Greenway battery

If you are particularly interested in learning more about the AGM batteries that are now available on the market. As a result, you have a strategy for getting to the proper spot. One of the most often asked questions is “how do I know whether my battery is AGM” and “what does it signify” when it comes to batteries. As a result, AGM batteries are the most technologically sophisticated lead-acid batteries available, incorporating technologies such as gel and liquid lead-acid. They provide greater power to support high electrical devices or start-stop technologies, and they may be recharged quickly.

What does AGM mean on a battery?

The AGM batteries that have just been introduced into the market may pique your attention. This means that you’ve taken the proper route. A typical question that people have is “how do I know whether my battery is AGM” and “what does it signify” when it comes to batteries. To put it another way, improved lead-acid batteries, such as gel and liquid lead-acid batteries, are intended for use with AGM batteries.

They provide better power to support high electrical devices or start-stop technologies, and they are also environmentally friendly. Taking a deep breath, let’s get to work.

How to be sure the battery type in my battery is AGM?

It is critical to understand the sort of battery you presently have in your possession since each variety has its own set of handling practices. One of the most common types of lead-acid batteries is liquid lead acid, sometimes known as wet cells. AGM batteries, on the other hand, are the most recent additions to the market and are commonly referred to as dry cell batteries, which may be replaced by wet cell batteries. They have a reputation for being safer, more transportable, and having a longer lifespan than traditional batteries.

Among the words you’ll come across while searching for liquid batteries or flood-lead-acid batteries are “wet cell,” “lead-acid,” or “flooded lead acid,” and “liquid lead acid.” Gel-filled lead-acid type batteries will henceforth be identified on the label by the words “Gel-Filled.” The AGM lead-acid batteries’ labels should indicate “AGM” or, in full words, “Absorbed Glass Mat,” as well as keywords such as “dry cell,” “sealed regulated valve,” “non-spill,” or “controlled valve” on the label.

  • If there is no labeling on the AGM, it is difficult to distinguish it from a gel cell in the absence of labeling.
  • The information about the manufacturer, as well as the name or model number of their product, is generally embossed on the casing or printed on the label.
  • In most cases, batteries have detachable tops or caps, unless the battery is labeled as “sealed,” which indicates that it is a liquid lead-acid battery.
  • This approach necessitates the use of safety equipment (such as safety goggles and rubber gloves) due to the requirement to shake the battery.
  • It is common for the liquid core to continue to move for a period of time after the battery has been sealed.
  • Gel-filled batteries and AGM lead-acid batteries will not wriggle after being shaken, so be sure to check before using them.

How do I change AGM batteries?

With the advent of lithium-ion rechargeable batteries, battery replacement has become far more complicated than it was 20 years ago with standard lead-acid batteries. According to reports, this is one of the reasons why a professional workshop should be hired to do the repair. The engine compartment now contains just 58 percent of the batteries, which is a significant decrease from previous years. However, 40% of them are located in the trunk, with just 2% of them being located in the passenger compartment.

The process of replacing a contemporary battery might involve as many as 28 steps, which greatly increases the complexity of the overall procedure.

DIY installation that is not done correctly can result in limitation or even failure of the start-stop function, which can result in greater fuel consumption as a result of the additional restriction or failure.

However, if you are still determined to change your own AGM battery, keep in mind that an AGM battery can only be replaced with another AGM battery, whereas an EFB battery may be changed with either an AGM or an EFB battery.

Your car’s battery is likely to be an absorbent glass mat (AGM) or a gel cell battery if it is not located under the hood or in the engine compartment.

While the installation technique for either an AGM or a conventional battery is the same, extra calibration steps must be performed throughout the replacement process in order to avoid the battery from failing.

However, if the system is not properly calibrated, there is a risk that the alternator would overcharge the battery, resulting in the battery failing when it is replaced.

For AGM cells, a somewhat slower charge rate is required to avoid overcharging the battery.

Overcharging the battery can cause the cells to dry up prematurely, resulting in a short battery life.

As a result, experts recommend that the whole procedure of replacing AGM batteries be carried out under the supervision of a qualified technician. battery made of lithium-ion Battery for an electric bicycle Lithium-ion batteries

Leave a Comment

Your email address will not be published. Required fields are marked *