Why doesn’t my Wrangler 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 may have a habit of leaving your car doors open and the cabin light at night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care and learn more about your battery's charge.

What happens to my old Wrangler battery?

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

What’s the cost of DieHard batteries for Jeep Wranglers?

Get affordable prices on Jeep Wrangler 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 is a car battery good for?

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.

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

If you notice white, crusty stuff around the battery terminals of your Wrangler, 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 Wrangler’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.

How do I clean a corroded Wrangler battery terminal?

You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your Wrangler 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 Wrangler batteries near me?

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

2003 Jeep Wrangler Batteries

Get a New Jeep Battery

Get a Battery for Your Jeep Wrangler

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 2003 Jeep Wrangler today and schedule a quick installation at Firestone Complete Auto Care.

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Battery Size & Replacement for 2003 Jeep Wrangler

Need more info about Jeep Wrangler batteries? Use this chart to find the right battery size and CCAs for your Jeep Wrangler.

Battery	Engine	Warranty		Cold Cranking Amps
34FT-2	L4/2.4L	Replacement 36 months	Performance months	800
34-AGM	L4/2.4L	Replacement 36 months	Performance months	740
34FT-2	L6/4.0L	Replacement 36 months	Performance months	800
34-AGM	L6/4.0L	Replacement 36 months	Performance months	740

BATTERIES
L4/2.4L - Battery: 34FT-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
L4/2.4L - Battery: 34-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740
L6/4.0L - Battery: 34FT-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
L6/4.0L - Battery: 34-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740

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Buying a Replacement Battery for Jeep Wrangler

Sadly, your Jeep Wrangler won't last forever. Neither will its battery. Generally, car batteries last from three to five years. You want to replace your 2003 Jeep Wrangler battery before it fails and leaves you stranded. Look out for symptoms of a faulty car battery. A lagging starter, a blinking battery or check engine light, swollen battery case, corrosion-covered posts, or weak lights may all indicate that your battery is on its last leg.

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 2003 Jeep Wrangler. Car batteries are one of our many specialties! Our technicians are well-acquainted with Jeep’s service specs for Wrangler car batteries’ reserve capacities and cold cranking amps. Get help identifying the type and size of battery that fits your car perfectly, and schedule a fast car battery replacement at your earliest convenience.

Why Choose a DieHard Battery for Your Wrangler?

Your Jeep Wrangler deserves the best, which is why we carry just that. Your vehicle needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries go above and beyond using the latest innovative technology to meet the expanding power needs of new vehicles. They're no ordinary battery, they're extraordinary. Go with a DieHard battery for your Wrangler and have the peace of mind that performance will be there when you need it most. That’s why you should choose batteries from Firestone Complete Auto Care.

Caring for a New Jeep Wrangler Battery

Did you recently have a new 2003 Jeep Wrangler car battery installed? Great job! Give your new car battery the best start with proper care. ensuring all the lights are turned off before you leave the car, decreasing the number of short trips you take, keeping your battery posts clean, and not using electronics such as the radio and power outlets when the engine is off.