Why won't my Thunderbird battery stay charged?

A car battery that needs to be jump-started every time is as good as dead. The battery may be too old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop in for a free battery check at your nearest Firestone Complete Auto Care and learn more about your battery's charge.

What happens to my old Thunderbird battery?

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

How much will replacing my Ford Thunderbird’s battery cost if I get a DieHard battery?

Get affordable prices on Ford Thunderbird 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.

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

A chemical reaction between battery acid and the air can cause a white, crusty buildup to form on the terminals of your Thunderbird car battery. This buildup — known as corrosion — can impede the flow of electricity and cause a range of issues, from poor performance to premature battery failure.

How do I clean a corroded Thunderbird battery terminal?

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 purchase Thunderbird batteries near me?

Your local Firestone Complete Auto Care sells and installs Thunderbird batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

Car Batteries for 1991 Ford Thunderbird

Get a New Ford Battery

Ford Thunderbird Batteries Near You

Don’t let a dead battery stop you. Shop replacement car batteries for your 1991 Ford Thunderbird at Firestone Complete Auto Care.

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The Right Battery Size for a 1991 Ford Thunderbird

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

Battery	Engine	Warranty		Cold Cranking Amps
58-2	V6/3.8L	Replacement 24 months	Performance months	550
65-2	V6/3.8L	Replacement 36 months	Performance months	850
65-AGM	V6/3.8L	Replacement 36 months	Performance months	750
65-2	V8/5.0L	Replacement 36 months	Performance months	850
65-AGM	V8/5.0L	Replacement 36 months	Performance months	750
65-1	V8/5.0L	Replacement 24 months	Performance months	850

BATTERIES
V6/3.8L - Battery: 58-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 550
V6/3.8L - Battery: 65-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850
V6/3.8L - Battery: 65-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 750
V8/5.0L - Battery: 65-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850
V8/5.0L - Battery: 65-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 750
V8/5.0L - Battery: 65-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 850

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Buy the Right Battery for Your Ford Thunderbird

Your Thunderbird 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 Ford Thunderbird stranded. Watch for signs that your current battery is getting too old or too weak. A lagging starter, an illuminated check engine light or battery signal, swollen battery case, corroded battery posts, or dim headlights may all indicate that your battery needs attention.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. With best-in-class tools we can tell you how much "life" is left in your battery. Stop by for a free battery test and, if necessary, a battery replacement to help keep your 1991 Ford Thunderbird running! Automotive batteries are just one of our many areas of expertise. Our technicians are well-acquainted with Ford’s service specs for Thunderbird battery CCAs and reserve capacity. Get help choosing the battery size that matches your vehicle, and schedule an appointment today for a quick car battery replacement.

Find the Right DieHard Battery for Your Thunderbird

We only want what’s best for your Ford Thunderbird, which is why we carry just that. Your Thunderbird needs a reliable, durable and powerful battery in even some of the toughest conditions. DieHard batteries go above and beyond using the latest innovative technology to meet the expanding power demands of new vehicles. A DieHard battery isn't an ordinary car battery. It's extraordinary. Choose a DieHard battery for your Ford Thunderbird and drive with confidence knowing that performance will be there when you're counting on it. That's the kind of battery we deliver.

Caring for a New Ford Thunderbird Battery

Have you recently had a fresh battery installed in your Ford Thunderbird? Good thinking! Now, help it last longer and stay charged by caring for it from the get-go. Give your new battery a hand by decreasing the number of short trips you take, keeping the battery posts corrosion-free, and not playing the radio or using other electronics when the engine is turned off.

Answers to Your Thunderbird Car Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have a Thunderbird-specific battery question, pay us a visit. Our technicians have the answers.

Why won't my Thunderbird battery stay charged? A car battery that needs to be jump-started every time is as good as dead. The battery may be too old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop in for a free battery check at your nearest Firestone Complete Auto Care and learn more about your battery's charge.
What happens to my old Thunderbird battery? We recycle it, taking care of both your car and the Earth.
How much will replacing my Ford Thunderbird’s battery cost if I get a DieHard battery? Get affordable prices on Ford Thunderbird 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.
What is the white, crusty substance accumulating on my Thunderbird’s battery post? A chemical reaction between battery acid and the air can cause a white, crusty buildup to form on the terminals of your Thunderbird car battery. This buildup — known as corrosion — can impede the flow of electricity and cause a range of issues, from poor performance to premature battery failure.
How do I clean a corroded Thunderbird battery terminal? 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 purchase Thunderbird batteries near me? Your local Firestone Complete Auto Care sells and installs Thunderbird batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.