Why won't my DeVille battery stay charged?

A battery is in its final hour when it will no longer hold a charge. It may be getting old. Or, you may have been leaving your car doors ajar and the cabin light at night. Stop by for a free battery test at your local Firestone Complete Auto Care to learn more about the state of your battery.

What do you do with my dead DeVille battery?

We recycle it! Nearly 100% of all lead-acid batteries are recyclable.

How much will replacing my Cadillac DeVille’s battery cost if I get a DieHard battery?

You can find affordable DeVille batteries by using one of our car battery coupons, when available. Plus, every DieHard battery comes with extra coverage thanks to DieHard Assurance and a free replacement warranty.

What is the average lifespan of a car battery?

A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.

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

The white, flaky stuff that can build up around your DeVille’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 DeVille, 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 clean a corroded DeVille battery terminal?

To help extend the life of your battery, you should routinely inspect and clean the terminals using a baking soda and water mix, wire brush, and rag. Be sure to disconnect the battery cables before cleaning and check your DeVille owner’s manual for instructions on how to do so.

Where can I purchase DeVille batteries near me?

When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install DeVille batteries at our stores nationwide — and our Firestone Direct mobile vans can provide convenient on-site battery services. Learn more about our mobile battery services and book an appointment.

Car Batteries for 1991 Cadillac DeVille

Get a New Cadillac Battery

Cadillac DeVille Batteries Near You

Don't let a failing battery slow you down. Shop replacement batteries for 1991 Cadillac DeVilles today and schedule a quick installation at Firestone Complete Auto Care.

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Battery Size & Replacement for 1991 Cadillac DeVille

Need more info about Cadillac DeVille batteries? Check the chart to find the right car battery size and cold cranking amps for your DeVille.

Battery	Engine	Warranty		Cold Cranking Amps
34/78-4	V8/4.9L	Replacement 24 months	Performance months	800
78FT-2	V8/4.9L	Replacement 36 months	Performance months	800
78-AGM	V8/4.9L	Replacement 36 months	Performance months	740

BATTERIES
V8/4.9L - Battery: 34/78-4 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 800
V8/4.9L - Battery: 78FT-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
V8/4.9L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740

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Shopping for Cadillac DeVille Car Batteries

Your DeVille doesn't have an expiration date, but its battery does. The average car battery lasts three to five years. Check your battery regularly and replace it as needed so it doesn’t leave you and your Cadillac DeVille stranded. Watch for signs that your current battery is getting too old or too weak. A sluggish engine start, a blinking battery or check engine light, swollen battery case, corrosion-covered posts, or dim headlights can all be signs that your battery is on its last leg.

Or, you can get a complimentary battery check at your nearest 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 Cadillac DeVille a replacement battery. Car batteries are only one of our many strong suits. Our expert technicians understand Cadillac service recommendations for DeVille battery cold cranking amps and reserve capacity. Get help identifying the type and size of battery that's best for your DeVille, and schedule a weekday or weekend battery replacement service for your car.

Why Choose a DieHard Battery for Your DeVille?

We only want what’s best for your Cadillac DeVille, which is why we carry just that. Your vehicle needs a reliable, durable and powerful battery in even some of the toughest conditions. DieHard DeVille batteries surpass expectations using the latest innovative technology to satisfy the growing power needs of modern vehicles Don't call a DieHard battery ordinary. It's an extraordinary battery. Buy a DieHard battery for your Cadillac DeVille and get behind the wheel with confidence. Why? Because performance will be there when you're counting on it. That’s why you should choose batteries from Firestone Complete Auto Care.

Making Your DeVille’s New Battery Last

Have you recently had a fresh battery installed in your Cadillac DeVille? Great job! You can give your new battery a head start with proper care and attention. You can take care of your battery by cutting back on unnecessary short trips, cleaning your battery posts, and avoiding radio and electronic component use when the engine is off.

Answers to Your DeVille Car Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have battery questions that are Cadillac DeVille-specific, visit your nearest store. Our expert techs have the answers you need.

Why won't my DeVille battery stay charged? A battery is in its final hour when it will no longer hold a charge. It may be getting old. Or, you may have been leaving your car doors ajar and the cabin light at night. Stop by for a free battery test at your local Firestone Complete Auto Care to learn more about the state of your battery.
What do you do with my dead DeVille battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
How much will replacing my Cadillac DeVille’s battery cost if I get a DieHard battery? You can find affordable DeVille batteries by using one of our car battery coupons, when available. Plus, every DieHard battery comes with extra coverage thanks to DieHard Assurance and a free replacement warranty.
What is the average lifespan of a car battery? A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.
Why is there white, crusty buildup on my DeVille’s battery post? The white, flaky stuff that can build up around your DeVille’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 DeVille, 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 clean a corroded DeVille battery terminal? To help extend the life of your battery, you should routinely inspect and clean the terminals using a baking soda and water mix, wire brush, and rag. Be sure to disconnect the battery cables before cleaning and check your DeVille owner’s manual for instructions on how to do so.
Where can I purchase DeVille batteries near me? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install DeVille batteries at our stores nationwide — and our Firestone Direct mobile vans can provide convenient on-site battery services. Learn more about our mobile battery services and book an appointment.