Why won't my XK8 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 by for a free battery test at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.

What do you do with my dead XK8 battery?

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

How much do DieHard batteries cost for your Jaguar XK8?

Get affordable prices on Jaguar XK8 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?

Car battery lifespan varies depending on a few factors, including driving conditions, accessories, how well it’s maintained, and the type of battery. On average, a car battery lasts about three to five years.

What is the white, crusty stuff around my XK8’s battery post?

The white, crusty stuff that can accumulate around XK8 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 clean a corroded XK8 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 find a battery for my XK8?

Your local Firestone Complete Auto Care sells and installs XK8 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

2003 Jaguar XK8 Batteries

Get a New Jaguar Battery

Get a Battery for Your Jaguar XK8

Don’t let a dead battery stop you. Shop replacement car batteries for your 2003 Jaguar XK8 at Firestone Complete Auto Care.

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Battery Size & Replacement for 2003 Jaguar XK8

Not sure what battery to get for your Jaguar XK8? Use the following chart to find information on Jaguar XK8 battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
93-1	V8/4.2L	Replacement 24 months	Performance months	825
49H8	V8/4.2L	Replacement 36 months	Performance months	900
H8-AGM	V8/4.2L	Replacement 36 months	Performance months	900

BATTERIES
V8/4.2L - Battery: 93-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 825
V8/4.2L - Battery: 49H8 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 900
V8/4.2L - Battery: H8-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 900

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Buying a Replacement Battery for Jaguar XK8

Sadly, your Jaguar XK8 won't last forever. Neither will its battery. 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 Jaguar XK8 stranded. Pay attention to clues that your battery is on its way out. A slow engine crank, an illuminated check engine light or battery signal, bloated battery case, corrosion-covered posts, or dim headlights can all signal that your battery is waving goodbye.

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, get your Jaguar XK8 a replacement battery. Car batteries are only one of our many strong suits. Our expert technicians understand Jaguar service recommendations for XK8 battery cold cranking amps and reserve capacity. Get help figuring out the battery size that matches your vehicle, and schedule a weekday or weekend battery replacement service for your car.

Is There a DieHard Battery for XK8s?

Your Jaguar XK8 deserves the best, which is why we exclusively carry the best. Your XK8 needs a reliable, durable and powerful battery that can handle most extreme environments and weather conditions. DieHard batteries shatter expectations and house the latest technology to fuel the growing power needs of new vehicles. A DieHard battery isn't an ordinary car battery. It's extraordinary. Go with a DieHard battery for your XK8 and drive with confidence knowing that performance will be there when you need it most. That's the kind of battery we deliver.

Caring for a New Jaguar XK8 Battery

Have you recently had a fresh battery installed in your Jaguar XK8? Congrats! You can give your new battery a head start with proper care and attention. Give your new battery a hand by cutting back on unnecessary short trips, cleaning your battery posts, and not playing the radio or using other electronics when the engine is turned off.

Commonly Asked XK8 Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have a battery question that's unique to your Jaguar XK8 battery, stop by your nearest store. Our expert techs have the answers you need.

Why won't my XK8 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 by for a free battery test at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.
What do you do with my dead XK8 battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
How much do DieHard batteries cost for your Jaguar XK8? Get affordable prices on Jaguar XK8 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? Car battery lifespan varies depending on a few factors, including driving conditions, accessories, how well it’s maintained, and the type of battery. On average, a car battery lasts about three to five years.
What is the white, crusty stuff around my XK8’s battery post? The white, crusty stuff that can accumulate around XK8 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 clean a corroded XK8 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 find a battery for my XK8? Your local Firestone Complete Auto Care sells and installs XK8 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.