Question: How do you know what type of car battery you have?
Answer: The easiest way to figure out what kind of car battery you have is by checking the label. Usually, this label is right on the battery itself. It should tell you everything you need to know about the battery’s chemistry.
If your label is worn out or hard to read, don’t worry. Your vehicle’s owner’s manual is your next best bet. It should have detailed info about the battery type used in your car.
Can’t find the manual? You can also look up your car’s make, model, and year online. There’s plenty of information out there, just make sure to double-check your sources.
Still unsure? Visiting a professional is always a good idea. A quick stop at an auto parts store or dealership can give you the exact battery type you need.
Common battery types
Understanding the most common car battery types can help you make informed decisions about maintenance and replacements. Here’s a closer look at the most common battery types you’ll encounter:
Lead-acid batteries
Lead-acid batteries are the most common type in vehicles, especially traditional internal combustion engine (ICE) cars. They come in three main varieties:
- Lead-Acid Wet Cell (Flooded): These are the standard car batteries that have been used for decades. They contain an acid solution that requires periodic topping off with distilled water.
- Lead-Acid Gel Cell (Dry Cell): Though they function like wet cell batteries, gel cell batteries use a thick gel, making them spill-proof and maintenance-free.
- Absorbed Glass Mat (AGM): AGM batteries are a more advanced form of lead-acid batteries. They use a fiberglass mat to absorb the electrolyte, making them spill-proof and highly resistant to vibration.
Enhanced flooded batteries (EFB)
- Enhanced flooded batteries (EFB): are similar to lead-acid batteries but offer up to twice the durability. They’re more expensive, but they’re tougher, last longer, and are often found in vehicles with stop-start technology.
Hybrid and electric vehicle (EV) batteries
- Lithium-Ion (LI-ION) Batteries: Lithium-ion batteries are lighter and more energy-efficient than lead-acid batteries. They are commonly found in electric vehicles (EVs) and hybrids due to their ability to store more energy in a smaller, lighter package. These batteries charge quickly, have a long lifespan, and require virtually no maintenance.
- Nickel-Metal Hydride (NIMH) Batteries: Nickel-metal hydride batteries are another type commonly used in hybrid vehicles. They are known for their durability and can withstand various temperatures, making them reliable in multiple driving conditions.
How to choose the right replacement battery
Not all batteries are created equal, and there can be significant differences even within the same type.
Size and fit
First, ensure the replacement battery is the correct size for your vehicle. Car batteries come in different group sizes, which refer to the battery’s dimensions, terminal placement, and the type of terminals.
Your battery label will specify the correct group size, or you can check your vehicle’s owner’s manual. A battery that’s too large or small can cause installation issues and may not fit securely in your car, leading to potential damage or malfunction.
Cold cranking amps (CCA)
Cold Cranking Amps (CCA) is a crucial rating, especially in colder climates. CCA refers to the battery’s ability to start the engine in cold temperatures. The higher the CCA rating, the better the battery will perform in cold weather.
Reserve capacity (RC)
Reserve Capacity (RC) indicates how long the battery can supply power if the alternator fails. It measures how long the battery can keep the vehicle’s electrical systems running before discharging completely.
A higher RC is beneficial, mainly if you frequently use your car’s electronics while the engine is off. If this describes your battery usage, choose a replacement with a higher RC.
Sarah Gray is an insurance writer with nearly a decade of experience in publishing and writing. Sarah specializes in writing articles that educate car owners and buyers on the full scope of car ownership—from shopping for and buying a new car to scrapping one that’s breathed its last and everything in between. Sarah has authored over 1,500 articles for Jerry on topics ranging from first-time buyer programs to how to get a salvage title for a totaled car. Prior to joining Jerry, Sarah was a full-time professor of English literature and composition with multiple academic writing publications.
Giselle Gomez is an editor with over a decade of experience editing content across personal finance, education, travel, and sports. In editing for Jerry, Giselle’s focus is on making sure content is consumer and SEO-friendly and helping readers understand all things car ownership. In prior roles, she worked as a content strategist, syndication editor, and writer. Her work is featured in AP, NerdWallet.com, BestColleges.com, and more. Giselle holds a master’s degree from Arizona State University.
