Why doesn’t my Regal battery stay charged?

A battery that won't hold a charge is almost as good as dead. It may be getting old. Or, you may have a habit of leaving your car doors open and the cabin light at night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care and learn more about your battery's charge.

What happens to my old Regal battery?

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

How much do DieHard batteries cost for your Buick Regal?

Get affordable prices on Buick Regal 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 long can I expect my car battery to last?

The typical 12-volt car battery may last three to five years, depending on the type of battery, the driving conditions, and how well the battery is maintained.

Why is there white, crusty buildup on my Regal’s battery post?

The white, crusty stuff that can accumulate around Regal car battery terminals is called corrosion. It is caused by a chemical reaction between the battery acid and the air, which creates a white, powdery substance that can build up on the terminals over time. Corrosion can interfere with the flow of electricity between the battery post and the car's electrical system, sometimes leading to poor electrical performance, difficulty starting, and even premature battery failure.

How do I remove corrosion from my Regal 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.

Where can I find a battery for my Regal?

At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install Regal batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.

2003 Buick Regal Car Batteries

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Get a Battery for Your Buick Regal

Don't let a failing battery slow you down. Shop replacement batteries for 2003 Buick Regals today and schedule a quick installation at Firestone Complete Auto Care.

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2003 Buick Regal Battery Replacement & Size

Not sure what battery to get for your Buick Regal? Use this chart to find the right battery size and CCAs for your Buick Regal.

Battery	Engine	Warranty		Cold Cranking Amps
34/78-4	V6/3.8L	Replacement 24 months	Performance months	800
75FT-3	V6/3.8L	Replacement 36 months	Performance months	700
78-AGM	V6/3.8L	Replacement 36 months	Performance months	740

BATTERIES
V6/3.8L - Battery: 34/78-4 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 800
V6/3.8L - Battery: 75FT-3 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 700
V6/3.8L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740

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Buying a Replacement Battery for Buick Regal

Sadly, your Buick Regal won't last forever. Neither will its battery. Generally, car batteries last from three to five years. Check your battery regularly and replace it as needed so it doesn’t leave you and your Buick Regal stranded. Look out for symptoms of a faulty car battery. A slow engine crank, an illuminated battery or check engine light, bloated battery case, corroded battery posts, or faded headlights may all indicate that your battery is waving goodbye.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. Our equipment can see how much charge is left in your battery. Visit us for a complimentary battery check and, if needed, get your Buick Regal a replacement battery. Car batteries are one of our many specialties! Our technicians are familiar with Buick-specific recommendations for Regal battery cold cranking amps and reserve capacity. Get help identifying the type and size of battery that matches your vehicle, and schedule a weekday or weekend battery replacement service for your car.

Is There a DieHard Battery for Regals?

Your Buick Regal deserves the best, which is why we exclusively carry the best. Your Regal needs a reliable, durable and powerful battery in even some of the toughest conditions. DieHard batteries go above and beyond and house the latest technology to fuel the growing power requirements of new vehicles. Don't call a DieHard battery ordinary. It's an extraordinary battery. Choose a DieHard battery for your Buick Regal and drive with confidence knowing that performance will be there when you're counting on it. That's the kind of battery we deliver.

Making Your Regal’s New Battery Last

Got a new car battery installed in your 2003 Buick Regal? Congrats! Give your new car battery the best start with proper care. turning off all of the lights when you leave your vehicle, decreasing the number of short trips you take, cleaning your battery posts, and not using electronics such as the radio and power outlets when the engine is off.

Answers to Your Regal Car Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have battery questions that are Buick Regal-specific, pay us a visit. Our expert techs have the answers you need.

Why doesn’t my Regal battery stay charged? A battery that won't hold a charge is almost as good as dead. It may be getting old. Or, you may have a habit of leaving your car doors open and the cabin light at night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care and learn more about your battery's charge.
What happens to my old Regal battery? We recycle it, taking care of both your car and the Earth.
How much do DieHard batteries cost for your Buick Regal? Get affordable prices on Buick Regal 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 long can I expect my car battery to last? The typical 12-volt car battery may last three to five years, depending on the type of battery, the driving conditions, and how well the battery is maintained.
Why is there white, crusty buildup on my Regal’s battery post? The white, crusty stuff that can accumulate around Regal car battery terminals is called corrosion. It is caused by a chemical reaction between the battery acid and the air, which creates a white, powdery substance that can build up on the terminals over time. Corrosion can interfere with the flow of electricity between the battery post and the car's electrical system, sometimes leading to poor electrical performance, difficulty starting, and even premature battery failure.
How do I remove corrosion from my Regal 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.
Where can I find a battery for my Regal? At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install Regal batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.