Why doesn’t my XJ6 battery stay charged?

A car battery that needs to be jump-started every time is as good as dead. The battery might be old. Or, you may have been leaving your car doors ajar and the dome lights on during the night. Stop by for a complimentary battery check at your local Firestone Complete Auto Care to learn more about the state of your battery.

What do you do with my dead XJ6 battery?

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

What’s the cost of DieHard batteries for Jaguar XJ6s?

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 is a car battery good for?

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, flaky stuff around my XJ6’s battery post?

If you notice white, crusty stuff around the battery terminals of your XJ6, it's likely corrosion. A chemical reaction between battery acid and the air can create a white, powdery substance that builds up over time on the terminals. This buildup can interfere with the electrical connection between the battery and your XJ6’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.

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

You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your XJ6 owner's manual to learn how to disconnect the battery cables. After disconnecting the cables, use a mixture of water and baking soda, a wire brush, and a rag to carefully clean the terminals.

Where can I purchase XJ6 batteries near me?

When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install XJ6 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.

1985 Jaguar XJ6 Batteries

Get a New Jaguar Battery

Get a New Jaguar XJ6 Battery

Don’t let a dead battery stop you. Shop replacement car batteries for your 1985 Jaguar XJ6 at Firestone Complete Auto Care.

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The Right Battery Size for a 1985 Jaguar XJ6

Not sure what battery to get for your Jaguar XJ6? Use this chart to find the right battery size and CCAs for your Jaguar XJ6.

Battery	Engine	Warranty		Cold Cranking Amps
78-1	L6/4.2L	Replacement 24 months	Performance months	700
75FT-3	L6/4.2L	Replacement 36 months	Performance months	700
78-AGM	L6/4.2L	Replacement 36 months	Performance months	740

BATTERIES
L6/4.2L - Battery: 78-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 700
L6/4.2L - Battery: 75FT-3 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 700
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

You can pretty much drive your Jaguar XJ6 until you don't want to anymore. But your XJ6's battery? Don't count on it to last forever. On average, auto batteries last anywhere from three to five years. You want to replace your 1985 Jaguar XJ6 battery before it fails and leaves you stranded. Watch for signs that your current battery is getting too old or too weak. A sluggish engine start, an illuminated check engine light or battery signal, bloated battery case, corrosion-covered posts, or faded headlights can all signal that your battery is on its last leg.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. With computerized testing we can see how much charge is left in your battery. Visit us for a complimentary battery check and, if needed, a replacement battery for your 1985 Jaguar XJ6. Car batteries are only one of our many strong suits. Our expert technicians understand Jaguar service recommendations for XJ6 battery CCAs and reserve capacity. Get help figuring out the battery size that fits your car perfectly, and schedule a weekday or weekend battery replacement service for your car.

Why Choose a DieHard Battery for Your XJ6?

Your Jaguar XJ6 deserves the best, which is why we carry just that. Your XJ6 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 satisfy the increasing power demands of modern vehicles A DieHard battery isn't an ordinary car battery. It's extraordinary. Choose a DieHard battery for your Jaguar XJ6 and have the peace of mind that performance will be there when you're counting on it. That's the kind of battery we deliver.

After Buying 1985 Jaguar XJ6 Battery

Got a new car battery installed in your 1985 Jaguar XJ6? Good thinking! You can give your new battery a head start with proper care and attention. ensuring all the lights are turned off before you leave the car, limiting short trips, keeping the battery posts corrosion-free, and not using electronics such as the radio and power outlets when the engine is off.