What is the difference between an AGM battery and a regular battery?
As the owner of Kevin's Autos, I often encounter questions about the various types of batteries used in vehicles. One common inquiry is about the differences between Absorbent Glass Mat (AGM) batteries and traditional lead-acid batteries. Understanding these differences can help you make informed decisions about your vehicle's power needs.
What is an AGM Battery?
An AGM battery is a type of lead-acid battery that uses a fiberglass mat to absorb the electrolyte, which makes it spill-proof and more resistant to vibration. This design allows AGM batteries to have a higher power output and a longer lifespan compared to regular batteries.
Key Differences Between AGM Batteries and Regular Batteries
- Construction: AGM batteries use a fiberglass mat to hold the electrolyte, while regular batteries have liquid electrolyte.
- Maintenance: AGM batteries are maintenance-free, whereas regular batteries may require periodic checks of the electrolyte levels.
- Vibration Resistance: AGM batteries are more resistant to vibrations, making them ideal for use in off-road or high-performance vehicles.
- Discharge Rate: AGM batteries can handle deeper discharges without damage, while regular batteries may suffer from reduced lifespan if deeply discharged.
- Cost: AGM batteries tend to be more expensive upfront compared to regular batteries, but they often provide better performance and longevity.
These differences highlight the advantages of AGM batteries, particularly for specific applications where performance and reliability are crucial.
When to Choose an AGM Battery
Choosing the right battery for your vehicle depends on your driving habits and needs. Here are some scenarios where an AGM battery might be the better choice:
- If you frequently drive in extreme temperatures.
- If your vehicle has a lot of electronic accessories or requires a lot of power.
- If you drive off-road or in rugged conditions.
- If you want a battery that requires no maintenance.
In these cases, the benefits of AGM batteries can outweigh the initial cost, providing you with a reliable power source for your vehicle.
Conclusion
In summary, AGM batteries offer several advantages over regular lead-acid batteries, including better performance, longer lifespan, and maintenance-free operation. While they may come at a higher price, the investment can be worthwhile for many drivers. At Kevin's Autos, we are here to help you choose the right battery for your vehicle's needs, ensuring you stay on the road with confidence.
Frequently Asked Questions
Is it worth switching to an AGM battery?
A battery's internal resistance can affect its performance. The internal resistance of an AGM battery can be as low as 2%. In comparison, a flooded battery can have an internal resistance of 10-15%. The lower internal resistance means an increased battery voltage output while helping AGM car batteries recharge faster.
How do I know if my battery is AGM or regular?
This is a special type of glass material that acts as a sponge, soaking up any extra water in the battery. You can tell if your product has an AGM by looking for “AGM” on the label, or by using the model number to look it up on the manufacturer's website. If you're not sure where to look, ask us!
What kills AGM batteries?
AGM batteries are 12 volts, like all car batteries, and can handle some higher voltage, but only up to a certain point. If a car alternator charges an AGM battery with a voltage higher than 15 volts, it can damage an AGM.
Do AGM batteries require a special charger?
AGM batteries have special charging needs. Some battery chargers offer an AGM or Absorbed setting to meet those special charging requirements. An AGM-compatible battery charger sends more amps into a lead-acid battery while keeping the voltage less than 14-15 volts.
What is the main disadvantage of an AGM battery?
the up-front cost
If there were more than one answer, the question asked would be "What are the main disadvantages of an AGM battery?" The main disadvantage of an AGM battery is the up-front cost, when compared to a traditional flooded lead-acid battery.
What are the common problems with AGM batteries?
Common problems of AGM (Absorbed Glass Mat) batteries are:
- Battery not holding charge.
- Battery cannot be fully charged.
- The battery cannot maintain its charge.
Is it okay to replace an AGM battery with a regular battery?
Yes you can. AGM batteries withstand higher charging rates and are better for high shock/vibration environments, such as off roading, but a regular lead acid battery will work fine.
Do AGM batteries need a special charger?
AGM batteries have special charging needs. Some battery chargers offer an AGM or Absorbed setting to meet those special charging requirements. An AGM-compatible battery charger sends more amps into a lead-acid battery while keeping the voltage less than 14-15 volts.
Can you jump start an AGM battery?
As mentioned above, jump starting AGM batteries is very straightforward. That said, our Booster PAC and Jump-N-Carry traditional jump starters use AGM batteries in them and are legendary for their power and durability. Whether jumping flooded batteries or AGM, they answer the call day after day, year after year.
Is an AGM battery better than a standard battery?
AGM batteries are built to withstand vibration. If your drives frequently take you over rough, bumpy terrain, an AGM may be a smart choice. High electrical loads. AGMs have a lower internal resistance, which allows for faster charging and higher power outputs.
