AGM (Absorbent Glass Mat) car batteries have become increasingly popular due to the fact they are perfect for vehicles that have:
- Advanced electrical systems,
- Start-stop technology,
- Or vehicles that need to endure harsh driving conditions.
What are AGM Car Batteries?
As we’ve defined above, AGM stands for Absorbent Glass Mat.
AGM is a lead-acid battery where the liquid electrolyte (or acid) is absorbed into a fibreglass mat, making the battery spill-proof and maintenance-free. The design of AGM means that there is a lower internal resistance, which allows for the following:
- High-performance power delivery,
- Better durability,
- And improved resistance to vibrations compared to traditional flooded batteries.
It also means that:
AGM Batteries are Sealed and Maintenance-Free:
As mentioned, AGM batteries use fibreglass mats to hold the battery fluid in place. Because the liquid is absorbed and can’t flow around, it’s spill-proof and requires no maintenance.
Efficient Power Delivery:
AGM battery design also means lower internal resistance, offering robust cold-cranking power and better overall performance.
Versatile
AGM batteries are also sealed and cannot be opened. Their sealed construction makes them ideal for vehicles that experience a lot of vibrations.
While AGM batteries are great for vehicles used in off-road conditions, they can also be installed in non-traditional orientations. However, always refer to the manufacturer’s manual before using an AGM battery in a non-traditional role.
Advantages of AGM Batteries
There are numerous advantages to installing an AGM battery in your car, which include the following:
Enhanced Durability
As mentioned, AGM batteries can handle rough handling. They are also more durable than traditional flooded batteries for deep cycling or frequent discharging and recharging.
This enhanced durability makes them well-suited for vehicles with high power demands or non-traditional operations.
Improved Safety
AGM car batteries are produced to be spill and leak-proof. Because the battery cannot be opened, its design reduces the risk of acid leaks and associated hazards.
Vibration and Shock Resistance
AGM batteries are generally tougher than other lead-acid batteries and can better tolerate vibration and shocks. As we’ve discussed, this is beneficial for off-road or heavy-duty applications.
Optimised for Modern Vehicles:
Modern vehicles have more advanced electronics and new systems, such as start-stop. These new features will work better if your car is fitted with an AGM battery, which can reliably deliver quick bursts of power.
While AGM batteries are generally considered superior to older lead-acid batteries, what are their disadvantages?
Disadvantages of AGM Batteries
Here are some disadvantages of AGM batteries to consider:
Higher Initial Cost
As you may have assumed, AGM batteries typically cost more than standard flooded lead-acid batteries.
For budget-conscious drivers, the higher upfront investment could be a significant barrier.
Charging Requirements
AGM batteries need to be precisely charged with the correct equipment.
Using an improper charger or a system not compatible with AGM batteries may reduce its lifespan.
Cost-Benefit Ratio for Standard Use
Paying for a premium battery is a good investment, especially if your car is a luxury off-road vehicle.
For a daily commuter with a basic vehicle, AGM batteries may not justify the extra cost.
Is investing in a new AGM battery worth it if you drive an older car?
Are AGM Batteries Worth the Investment?
As with anything in life, it depends on your current driving needs. Two main factors will determine whether AGM batteries are worth the investment.
Your Car Has High-Demand Features
As discussed, AGM batteries are great for new car with new electronic features like:
- start-stop technology,
- high-powered audio systems,
- or other accessories that place additional strain on the battery.
An AGM battery can enhance your car’s performance, reliability, and extend the lifespan of its electrical features.
However, For Standard Vehicles
An AGM battery’s price point and extra power will not perform much better when installed in older cars with lower electrical demands than a conventional lead-acid, flooded battery.
A standard battery will meet the needs of your older vehicle at a lower cost, which makes spending the extra cash less compelling.
Long-Term Value
However, even though AGM batteries come with a higher upfront cost, their benefits like:
- Extended lifespan
- Better performance in extreme conditions
- And minimal maintenance
These are all long-term benefits that any car owner would be interested in, and AGM batteries will provide long-term savings and peace of mind for those who need them.
If you are interested in buying an AGM battery for your car, make sure there’s one suitable for it, and they are available at your closest SABAT stockist.