Why won't my XJ6 battery stay charged?

A battery that won't hold a charge is almost as good as dead. The battery may be too old. Or, you’ve been leaving the doors slightly open and the cabin light at night. Stop by for a free battery test at your nearest Firestone Complete Auto Care and get a handle on your car battery’s health.

What do you do with my old XJ6 battery?

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

How much will replacing my Jaguar XJ6’s battery cost if I get a DieHard battery?

You can find affordable XJ6 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.

How long can I expect my car battery to last?

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.

Why is there white, crusty buildup on my XJ6’s battery post?

The white, flaky stuff that can build up around your XJ6’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 XJ6, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.

What do I do about corrosion on my XJ6 car battery?

Regularly inspecting and cleaning your battery terminals will help keep your XJ6’s electrical system running smoothly. Before cleaning, reference your owner’s manual for instructions on how to disconnect the battery cables. Once the cables have been disconnected, gently clean the terminals with a mixture of water and baking soda, a wire brush, and a rag.

Where can I find a battery for my XJ6?

Your local Firestone Complete Auto Care sells and installs XJ6 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

1984 Jaguar XJ6 Batteries

Get a New Jaguar Battery

Jaguar XJ6 Batteries Near You

Don't let a failing battery slow you down. Shop replacement batteries for 1984 Jaguar XJ6s today and schedule a quick installation at Firestone Complete Auto Care.

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The Right Battery Size for a 1984 Jaguar XJ6

Researching battery replacements for your Jaguar XJ6? Use the following chart to find information on Jaguar XJ6 battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
75-2	L6/4.2L	Replacement 24 months	Performance months	650
78FT-2	L6/4.2L	Replacement 36 months	Performance months	800
78-AGM	L6/4.2L	Replacement 36 months	Performance months	740

BATTERIES
L6/4.2L - Battery: 75-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 650
L6/4.2L - Battery: 78FT-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
L6/4.2L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740

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Buy the Right Battery for Your Jaguar XJ6

Sadly, your Jaguar XJ6 won't last forever. Neither will its battery. On average, auto batteries last anywhere from three to five years. You want to replace your 1984 Jaguar XJ6 battery before it fails and leaves you stranded. Look out for symptoms of a faulty car battery. A slow engine crank, an illuminated check engine light or battery signal, swollen battery case, corroded battery terminals, or weak lights may all indicate that your battery needs attention.

Or, you can get a complimentary battery check at your nearest Firestone Complete Auto Care. 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 needed, a replacement battery for your 1984 Jaguar XJ6. Automotive batteries are just one of our many areas of expertise. Our technicians are well-acquainted with Jaguar’s service specs for XJ6 car batteries’ reserve capacities and cold cranking amps. Get help figuring out the battery size that fits your car perfectly, and schedule a fast car battery replacement at your earliest convenience.

Why Choose a DieHard Battery for Your XJ6?

Your Jaguar XJ6 deserves the best, which is why we carry just that. Your vehicle needs a reliable, durable and powerful battery that can handle most extreme environments and weather conditions. DieHard batteries go above and beyond and house the latest technology to satisfy the increasing power needs of modern vehicles Don't call a DieHard battery ordinary. It's an extraordinary battery. Go with a DieHard battery for your XJ6 and drive with confidence knowing that your battery will perform when you need it. That’s why you should choose batteries from Firestone Complete Auto Care.

Making Your XJ6’s New Battery Last

Have you recently had a fresh battery installed in your Jaguar XJ6? 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 playing the radio or using other electronics when the engine is turned off.

Answers to Your XJ6 Car Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a battery question that's unique to your Jaguar XJ6 battery, visit your nearest store. Our technicians have the answers.

Why won't my XJ6 battery stay charged? A battery that won't hold a charge is almost as good as dead. The battery may be too old. Or, you’ve been leaving the doors slightly open and the cabin light at night. Stop by for a free battery test at your nearest Firestone Complete Auto Care and get a handle on your car battery’s health.
What do you do with my old XJ6 battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
How much will replacing my Jaguar XJ6’s battery cost if I get a DieHard battery? You can find affordable XJ6 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.
How long can I expect my car battery to last? 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.
Why is there white, crusty buildup on my XJ6’s battery post? The white, flaky stuff that can build up around your XJ6’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 XJ6, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.
What do I do about corrosion on my XJ6 car battery? Regularly inspecting and cleaning your battery terminals will help keep your XJ6’s electrical system running smoothly. Before cleaning, reference your owner’s manual for instructions on how to disconnect the battery cables. Once the cables have been disconnected, gently clean the terminals with a mixture of water and baking soda, a wire brush, and a rag.
Where can I find a battery for my XJ6? Your local Firestone Complete Auto Care sells and installs XJ6 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.