Why won't my 911 battery stay charged?

A battery is in its final hour when it will no longer hold a charge. It may be getting old. Or, you may have a habit of leaving your car doors open and the cabin light at night. Stop in for a free battery check at your nearest Firestone Complete Auto Care and learn more about your battery's charge.

What do you do with my dead 911 battery?

We’ll recycle your car battery for you!

How much do DieHard batteries cost for your Porsche 911?

You can find affordable 911 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 do car batteries 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.

Why is there white, crusty buildup on my 911’s battery post?

The white, crusty stuff that can accumulate around 911 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.

What do I do about corrosion on my 911 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 911 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.

Who sells 911 batteries near me?

When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install 911 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.

Car Batteries for 2004 Porsche 911

Get a New Porsche Battery

Get a New Porsche 911 Battery

Don’t let a dead battery stop you. Shop replacement car batteries for your 2004 Porsche 911 at Firestone Complete Auto Care.

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Battery Size & Replacement for 2004 Porsche 911

Researching battery replacements for your Porsche 911? Use the following chart to find information on Porsche 911 battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
94RH7	H6/3.6L	Replacement 36 months	Performance months	800
H7-AGM	H6/3.6L	Replacement 36 months	Performance months	850

BATTERIES
H6/3.6L - Battery: 94RH7 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
H6/3.6L - Battery: H7-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850

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Shopping for Porsche 911 Car Batteries

You can pretty much drive your Porsche 911 until you don't want to anymore. But your 911's battery? Don't count on it to last forever. Generally, car batteries last from three to five years. You want to replace your 2004 Porsche 911 battery before it fails and leaves you 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, bloated battery case, corrosion-covered posts, and subpar electrical performance may all indicate that your battery needs attention.

Or, you can get a complimentary battery check at your nearest Firestone Complete Auto Care. Our equipment can see how much charge is left in your battery. Stop by for a free battery test and, if needed, get your Porsche 911 a replacement battery. Automotive batteries are just one of our many areas of expertise. Our technicians are familiar with Porsche-specific recommendations for 911 battery cold cranking amps and reserve capacity. Get help choosing the battery size that matches your vehicle, and schedule an appointment today for a quick car battery replacement.

Is There a DieHard Battery for 911s?

We know what’s best for your Porsche 911, which is why we only carry top-of-the-line replacement parts and batteries. Your vehicle needs a reliable, durable and powerful battery in extremely hot and cold environments. DieHard batteries shatter expectations using the latest innovative technology to satisfy the expanding power needs of new vehicles. A DieHard battery isn't an ordinary car battery. It's extraordinary. Buy a DieHard battery for your Porsche 911 and drive with confidence knowing that performance will be there when you need it most. That’s why you should choose batteries from Firestone Complete Auto Care.

Making Your 911’s New Battery Last

Have you recently had a fresh battery installed in your Porsche 911? Congrats! Now, help it last longer and stay charged by caring for it from the get-go. You can take care of your battery by limiting short trips, keeping the battery posts corrosion-free, and avoiding radio and electronic component use when the engine is off.

Commonly Asked 911 Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have a 911-specific battery question, pay us a visit. Our expert techs have the answers you need.

Why won't my 911 battery stay charged? A battery is in its final hour when it will no longer hold a charge. It may be getting old. Or, you may have a habit of leaving your car doors open and the cabin light at night. Stop in for a free battery check at your nearest Firestone Complete Auto Care and learn more about your battery's charge.
What do you do with my dead 911 battery? We’ll recycle your car battery for you!
How much do DieHard batteries cost for your Porsche 911? You can find affordable 911 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 do car batteries 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.
Why is there white, crusty buildup on my 911’s battery post? The white, crusty stuff that can accumulate around 911 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.
What do I do about corrosion on my 911 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 911 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.
Who sells 911 batteries near me? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install 911 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.