2018 Hyundai Elantra Battery Size
The 2018 Hyundai Elantra is equipped with an H6 battery group size, although a slightly smaller H5 battery will also fit.
Written by Kathryn Kurlychek
Reviewed by Claire Beaney
The 2018 Hyundai Elantra is equipped with an H6 battery, also known as a Group 48 battery. But that’s not the only battery that will fit—smaller H5 batteries can also power your 2018 Elantra.
Your car battery is key to your 2018 Hyundai Elantra’s performance. But with the average lifespan between just two and five years, chances are you’ll have to replace it sooner or later—and when that time comes, you’ll need to know a few key pieces of information in order to replace it.
Here to walk you through the basics of the 2018 Hyundai Elantra’s battery size (and other specs) is
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How big is a 2018 Hyundai Elantra battery?
The 2018 Hyundai Elantra is equipped with an H6 battery, also known as a BCI Group 48 battery.
If you’re new to the world of battery groups and sizes, you may be wondering exactly what all those letters and numbers mean. The truth is, you don’t really need to know much about group sizes in order to find the correct battery for your car—but all the same, it’s helpful knowledge to have, especially if you’re looking at aftermarket products.
BCI stands for The Battery Council International, a global trade association of battery manufacturers, distributors, recyclers, and retailers responsible for creating the system by which batteries are commonly grouped.
The BCI system categorizes car batteries by assigning groups, letters, and numbers to different batteries depending on specs like size, type, and terminal locations. This information helps to determine which battery will best fit a certain vehicle. A Group 48/H6 battery has the following dimensions:
- Length: 12 1/16”
- Width: 6 7/8"
- Height: 7 9/16”
If you want to be sure of the type of battery that’s in your 2018 Elantra, you can always check your owner’s manual to find the correct information, or simply pop your Hyundai’s hood and take a look at the label attached to the battery itself.
Fun fact: an H6 battery isn’t the only kind that will fit in your 2018 Hyundai Elantra! You can also use a slightly smaller H5 battery—or another that has similar dimensions—when swapping out your old battery for something new. Just make sure the battery you choose has enough amperage and reserve capacity for your car!
2018 Hyundai Elantra battery life
The average lifespan for your Hyundai Elantra battery is between two and five years. But that’s a pretty general estimation—so let’s take a closer look at what factors influence battery life.
Car batteries are designed to be recharged by the engine as you drive—but exactly how often and aggressively you drive can influence how long your battery will last. For example, batteries that see more mileage and harder driving habits likely won’t last as long as those in cars that are driven more sparingly. The temperature you store your vehicle at can also impact the battery life.
Chances are, you’ll notice your battery starting to fail before it actually dies—watch out for these signs that your car battery is going bad:
- Clicking sounds when starting your vehicle
- Corrosion on the battery or around battery terminals
- Dimming of interior or exterior lights
- A battery that frequently dies/requiresjumping and/or charging
Your owner’s manual recommends replacing your 2018 Hyundai Elantra battery with a new, genuine Hyundai OEM battery—which can cost as much as $350 or more. If you’re not interested in shelling out big bucks for a new battery, you can always check out auto parts stores such as
Advanced Auto Parts
to find an aftermarket alternative, which is generally much cheaper. 
How to keep your 2018 Hyundai Elantra battery healthy
No matter what kind you buy, car batteries won’t last forever. But there are steps you can take to extend your battery’s lifespan and keep your 2018 Hyundai Elantra car battery healthy:
- Drive your car regularly. Your battery is recharged by running your engine—which is why cars that haven’t been driven for long spans of time typically require a jump to get running. Even if you don’t drive your car all that often, letting the engine run or taking it for short drives on a regular basis can ensure you don’t face premature battery failure.
- Never leave your lights on. Leaving your headlights or interior lights on can drain battery juice, even if the vehicle itself is turned off. Always make sure to turn off all of your car’s lights before getting out.
- Disconnect electronics when not in use. Make sure to unplug any electrical cords (like phone chargers) as soon as your engine is off, so that they don’t continue to drain your battery.
- Manually recharge the battery after storing your vehicle. If you do have to store your vehicle for an extended period (for example, a few weeks of vacation), consider removing and manually recharging your battery before starting your car back up.
- Keep up with essential vehicle maintenance. Electrical issues in your car can deplete the battery and lead to early failure—so don’t neglect necessary maintenance. You can find a recommended maintenance schedule inside your Elantra’s owner’s manual.
How to save on Hyundai Elantra insurance
Battery replacements and other maintenance costs are an unavoidable part of car ownership. Luckily,
Jerry
can help you save where it counts—on your Hyundai insurance costs
—so you have extra money to spend on repairs. Here’s how to save: download the Jerry app, then answer a few questions about you and your car. In 45 seconds or less, Jerry can use your information to collect customized quotes tailored to your driving profile—and with over 55 name-brand insurance partners to choose from, you can be sure you’re always getting the best deals.
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