Today's vehicles have more electrical demands than ever before, and batteries play an essential role in meeting those demands.
Your car battery provides the electrical current needed to start the engine. It powers components and accessories when the engine is off and supplies additional current when the electrical load exceeds the charging system's capacity. The battery also maintains a stable voltage for the entire electrical system.
Choosing the right battery can significantly enhance your vehicle's performance and longevity. However, with various car battery types available, selecting the ideal one can be challenging. This guide will help you determine the best battery for your vehicle's specific needs.
1. Flooded Lead Acid (FLA)
Flooded lead acid (FLA) batteries have been the standard for decades and are the traditional battery type for most standard and older vehicles. These batteries use a liquid electrolyte to facilitate chemical reactions that produce electricity. FLA batteries require regular maintenance, which includes refilling the liquid electrolyte.
Pros:
- Affordable
- Widely available
- Reliable for standard and older vehicles
- Easy to maintain and replace when needed
Cons:
- Require regular maintenance
- Shorter life span compared to other battery types
- Can be damaged easily by extreme temperatures and is prone to leakage
2. Absorbent Glass Mat (AGM)
Absorbent glass mat (AGM) batteries offer advantages in specific applications. These batteries use a fiberglass mat to absorb the electrolyte, making them mostly maintenance-free. This design makes the batteries more durable and improves their performance. They are ideal for modern and luxury vehicles with higher electrical demands.
Pros:
- Maintenance-free
- Spill-proof
- Longer life span
Cons:
- Higher cost compared to FLA batteries
3. Enhanced Flooded Battery (EFB)
Enhanced flooded batteries (EFB) are a hybrid of FLA and AGM batteries. EFB batteries use a thicker plate and active calcium alloy to improve performance and extend the life span compared to the standard FLA battery. They are best suited for modern vehicles.
Pros:
- Lower cost than AGM batteries
- Longer life span
Cons:
- Require some maintenance
- More expensive than FLA batteries
4. Lithium-Ion Battery
Lithium-ion batteries are commonly used in electric and plug-in hybrid vehicles. These batteries use lithium compounds as the electrolyte to store energy. Li-ion batteries have high energy density, are lightweight and offer a longer life span.
Pros:
- Lightweight
- High energy density
- Longer life span and fast charging
Cons:
- More expensive than other car batteries
- Sensitive to high temperatures
How To Find the Right Battery for Your Vehicle
Proper car battery maintenance includes selecting the correct battery for your vehicle. While flooded and glass mat (AGM) batteries serve the same basic function, they aren't interchangeable. To ensure you select the correct battery for your vehicle, consult your owner's manual.
Vehicles with a start-stop system, which shuts down the engine during idle stops, likely need an AGM battery. This design ensures proper operation of the start-stop system while maintaining maximum battery life. If your car came with an FLA battery, replace it with the same type when needed. Upgrading to an AGM battery is unnecessary unless recommended by the vehicle manufacturer.
Below are other factors to consider when selecting the right type of car battery for your vehicle.
1. Vehicle Type
The type of car battery your vehicle requires depends on the make and model. Larger vehicles like SUVs and trucks need larger batteries with a higher cranking amp (CA) rating, while smaller cars require smaller batteries for their smaller engines. It's best to consult your owner's manual for specific battery specifications.
2. Driving Conditions
Your driving habits and local weather conditions can impact battery performance. If you tend to drive longer distances in warmer temperatures, a standard flooded lead-acid (FLA) battery might suffice. However, an AGM battery might be a better choice if you frequently drive shorter distances in colder climates.
3. Budget
Battery prices vary significantly based on type, brand and size. Lithium-ion and AGM batteries are typically the most expensive due to their superior performance and technology. While budget is important, remember that a higher-quality battery can last longer, saving you money in the long run.
4. Warranty
Your car battery should have a warranty, but the coverage can vary depending on the battery's type, manufacturer and purchase location. To make an informed decision, compare warranties and understand the following key factors:
- Warranty duration: Warranties typically range from 24 months to 36 months or more.
- Coverage: While some warranties only cover the battery itself, others include the labor cost for installation.
- Prorated versus free replacement: Determine if the warranty offers a free or prorated replacement based on the battery's age.
Understanding these key factors will help you choose a battery warranty that meets your needs.
FAQ
Below are commonly asked questions about types of car batteries.
How Long Do Car Batteries Typically Last?
Car batteries typically last three to five years, but their life span depends on several factors, including climate. Extreme heat can shorten a battery's life, while cold temperatures can also impact performance. Regular maintenance, proper charging and consistent long drives can help extend a battery's life span.
Frequent short trips and leaving electronics on while the car is off can shorten it. While a car tune-up won't directly affect battery life, it can optimize engine performance, reducing strain on the battery and potentially prolonging its overall life span.
How Can I Extend the Life of My Car Battery?
While most modern designs claim to be maintenance-free, you can do a few things to extend your battery's life. You can complete these steps yourself or ask your auto service tech when you bring your car in for routine maintenance.
To love your battery, check and clean the corrosion from each battery terminal. Corrosion can compromise the electrical connections. Check and tighten the mounting hardware to prevent the battery from moving when the car hits bumps. Excessive vibration shortens battery life.
How Often Should I Replace a Weak or Dead Battery?
Even though the alternator keeps it charged, car batteries eventually need replacing. After two years of owning a new battery, have your auto technician annually test the battery's remaining energy capacity. Catching a weak battery in the service bay is better than having a dead battery out on the road.
When replacing the car battery, the technician should connect a supplementary 12-volt power supply before disconnecting the battery cables. This will keep onboard computers operating properly, preventing potential complications. To avoid issues, choose an auto service professional with experience working on your make and model car.
How Do I Know My Car Battery Type?
There are several ways to identify your car battery type.
- Consult your owner's manual: Your vehicle's owner's manual typically provides details about the recommended battery type.
- Check the battery label: The battery is usually located under the hood but can sometimes be found in the trunk or inside the car. Look for a label on the battery itself that includes information, such as the battery type, group size and cranking amps.
- Visit an auto repair shop: A technician can inspect your vehicle and determine the correct battery type.
Which Is Better: An EFB or an AGM Battery?
AGM batteries generally outperform EFB batteries in terms of performance and longevity. They offer higher durability and higher cold cranking amps (CCA), plus they're maintenance-free. While EFB batteries require minimal maintenance and provide better performance than traditional flooded lead-acid (FLA) batteries, they don't match the overall capabilities of AGM batteries.
Choose the Right Car Battery With AAA Auto Repair
AAA makes car care effortless. With open access to its network of more than 7,000 Approved Auto Repair facilities, members can easily find the right auto service professional.
To keep your vehicle running smoothly, remember to include testing and replacing your car battery on your car maintenance checklist. By staying on top of routine maintenance and leveraging AAA's resources, you can enjoy peace of mind and extend the life of your vehicle.