When choosing a car battery, understanding the differences between AGM (Absorbed Glass Mat) and traditional lead-acid batteries is important. This guide will help you understand the key distinctions between AGM and lead-acid batteries, helping you make an informed decision based on your vehicle’s needs and driving habits.
What is an AGM Battery?
AGM battery is a type of sealed lead-acid battery that features advanced design elements to enhance its performance and safety. The electrolyte in this battery is absorbed into a fiberglass mat that is sandwiched between the battery’s lead plates, making it less prone to spillage and allowing the battery to be mounted in various positions. This design makes it highly resistant to vibrations and shocks, and it excels in deep discharge and fast charging capabilities.
What is a Lead Acid Battery?
Lead acid battery is a traditional type of rechargeable battery that uses a liquid electrolyte composed of sulfuric acid and water, paired with lead plates, to store and release electrical energy. It is widely known for its reliability, cost-effectiveness, and relatively simple construction, and it is commonly used in automotive applications for starting engines and powering electrical systems.
Related: A Guide to Car Battery Types
What’s the Difference Between AGM and Lead Acid Battery?
The key differences between AGM (Absorbent Glass Mat) and traditional lead-acid batteries lie in their construction, performance characteristics, and maintenance requirements. Here’s a comparison of the two:
| AGM | Lead Acid | |
|---|---|---|
| Runtimes | Provide longer runtime than traditional lead-acid batteries under the same conditions. | Shorter runtime compared to AGM batteries due to lower efficiency and a faster voltage drop during discharge. |
| Charge Cycles | 300-1000 cycles | 300-500 Cycles |
| Charge Time | Can be fully charged in 2 to 8 hours. | A full charge can take 12 to 16 hours, depending on the charger and the battery’s size. |
| Lifespan | 3 to 7 years | 3 to 5 years |
| Maintenance | They require minimal maintenance, as they do not require regular electrolyte checks. | Require regular maintenance, including checking electrolyte levels, cleaning terminals, and proper charging. |
| Safety | Generally safe, charge with an appropriate charger to avoid overcharging; it is sealed and spill-proof. | Require careful handling, avoid overcharging, prevent exposure to sparks or open flames, and wear protective gear to prevent contact with corrosive sulfuric acid.. |
| Cost | Typically, they cost more than traditional lead-acid batteries due to their advanced design, durability, and maintenance-free features. | They are generally more affordable than AGM batteries, making them a popular choice for cost-sensitive applications. |
When Should AGM and Lead Acid Battery Be Used?
AGM (Absorbent Glass Mat) batteries are ideal for applications that demand high performance and durability. They are particularly well-suited for environments with high vibrations and shocks, such as off-road vehicles, marine applications, and racing cars, due to their robust, sealed construction, while lead-acid batteries are well-suited for a range of applications where cost-effectiveness and reliable performance are key. They are ideal for standard automotive use, including cars, trucks, and motorcycles, where they provide dependable starting power and meet the vehicle’s energy needs under typical conditions.
Summary
AGM batteries excel in performance, longevity, and maintenance-free operation, making them ideal for high-demand or extreme conditions. Contrary to this, traditional lead-acid batteries are cost-effective and reliable for standard use. Choose based on your budget, driving habits, and vehicle needs.
For expert advice or to purchase the ideal battery, call Neighborhood Roadside Assistance. We offer battery replacement services in New York, New Jersey, and Atlanta.
