Why won’t my Sonata battery hold a charge?

A battery that won't hold a charge is almost as good as dead. The battery might be old. Or, you may have been leaving your car doors ajar and the lights on overnight. Stop by for a complimentary battery check at your nearest Firestone Complete Auto Care and get a handle on your car battery’s health.

What do you do with my dead Sonata battery?

We recycle it, taking care of both your car and the Earth.

How much will replacing my Hyundai Sonata’s battery cost if I get a DieHard battery?

Get affordable prices on Hyundai Sonata batteries by using one of our limited-time battery deals. Plus, all DieHard car batteries come with a free replacement warranty and extra coverage with DieHard Assurance.

How often should I replace my car battery?

You can usually get three to five years out of your car battery. However, battery type, how well you maintain your battery, and your driving habits can all affect your battery’s lifespan.

What is the white, crusty substance accumulating on my Sonata’s battery post?

The white, flaky stuff that can build up around your Sonata’s battery terminals is known as corrosion. Acid leaking from your vehicle’s battery post can have a chemical reaction with the air, leading to an accumulation of the white, powdery substance over time. Corrosion can affect the flow of electricity between your battery and the electrical system in your Sonata, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.

How do I remove corrosion from my Sonata car battery?

Regularly inspect the terminals and clean them with a mixture of baking soda and water, a wire brush, and a rag. Disconnect the battery cables before cleaning to help avoid the risk of electrical shock. Always reference and follow the instructions in your vehicle owner’s manual prior to disconnecting the battery cables.

Who sells Sonata batteries near me?

You can shop for Sonata batteries at your local Firestone Complete Auto Care, and our expert technicians will even handle the installation. Don’t have time to visit our store? Our Firestone Direct mobile vans can come to you for battery installations! Learn more about our mobile battery services.

2021 Hyundai Sonata Batteries

Get a New Hyundai Battery

Get a New Hyundai Sonata Battery

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 2021 Hyundai Sonata today and schedule a quick installation at Firestone Complete Auto Care.

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The Right Battery Size for a 2021 Hyundai Sonata

Need more info about Hyundai Sonata batteries? Use the following chart to find information on Hyundai Sonata battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
H6-AGM	L4/2.5L	Replacement 36 months	Performance months	760
H6-AGM	L4/1.6L	Replacement 36 months	Performance months	760
H6-AGM	L4/1.6L	Replacement 36 months	Performance months	760
H6-AGM	L4/2.5L	Replacement 36 months	Performance months	760
H6-AGM	L4/1.6L	Replacement 36 months	Performance months	760
H6-AGM	L4/2.5L	Replacement 36 months	Performance months	760
H6-AGM	L4/2.5L	Replacement 36 months	Performance months	760
H6-AGM	L4/1.6L	Replacement 36 months	Performance months	760

BATTERIES
L4/2.5L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760
L4/1.6L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760
L4/1.6L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760
L4/2.5L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760
L4/1.6L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760
L4/2.5L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760
L4/2.5L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760
L4/1.6L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760

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Buying a Replacement Battery for Hyundai Sonata

Sadly, your Hyundai Sonata won't last forever. Neither will its battery. On average, auto batteries last anywhere from three to five years. Check your battery regularly and replace it as needed so it doesn’t leave you and your Hyundai Sonata stranded. Pay attention to clues that your battery is on its way out. A sluggish engine start, a blinking battery or check engine light, swollen battery case, corrosion-covered posts, and subpar electrical performance may all indicate that your battery is on its last leg.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. With best-in-class tools we can tell you how much "life" is left in your battery. Visit us for a complimentary battery check and, if necessary, a battery replacement to help keep your 2021 Hyundai Sonata running! Car batteries are one of our many specialties! Our expert technicians understand Hyundai service recommendations for Sonata battery CCAs and reserve capacity. Get help identifying the type and size of battery that fits your car perfectly, and schedule a weekday or weekend battery replacement service for your car.

Find the Right DieHard Battery for Your Sonata

We only want what’s best for your Hyundai Sonata, which is why we carry just that. Your Sonata needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries go above and beyond and house the latest technology to meet the increasing power needs of new vehicles and their accessories. A DieHard battery isn't an ordinary car battery. It's extraordinary. Buy a DieHard battery for your Hyundai Sonata and have the peace of mind that performance will be there when you need it most. That's the kind of battery we deliver.

Caring for a New Hyundai Sonata Battery

Did you recently have a new 2021 Hyundai Sonata car battery installed? Good thinking! Now, help it last longer and stay charged by caring for it from the get-go. ensuring all the lights are turned off before you leave the car, decreasing the number of short trips you take, keeping your battery posts clean, and avoiding radio and electronic component use when the engine is off.