Why doesn’t my 911 battery stay charged?

A car battery that needs to be jump-started every time is as good as dead. It may be getting old. Or, you may have been leaving your car doors ajar and the cabin light at night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care to learn more about the state of your battery.

What happens to my old 911 battery?

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

How much will replacing my Porsche 911’s battery cost if I get a DieHard battery?

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 often should I replace my car battery?

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 911’s battery post?

A chemical reaction between battery acid and the air can cause a white, crusty buildup to form on the terminals of your 911 car battery. This buildup — known as corrosion — can impede the flow of electricity and cause a range of issues, from poor performance to premature battery failure.

How do I clean a corroded 911 battery terminal?

Regularly inspecting and cleaning your battery terminals will help keep your 911’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 purchase 911 batteries near me?

You can shop for 911 batteries at your local Firestone Complete Auto Care, and our expert technicians will even handle the installation. Don’t have time to visit our store? Our Firestone Direct mobile vans can come to you for battery installations! Learn more about our mobile battery services.

1992 Porsche 911 Batteries

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 1992 Porsche 911 at Firestone Complete Auto Care.

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Battery Size & Replacement for 1992 Porsche 911

Need more info about Porsche 911 batteries? Use this chart to find the right battery size and CCAs for your Porsche 911.

Battery	Engine	Warranty		Cold Cranking Amps
48H6	H6/3.3L	Replacement 36 months	Performance months	730
H6-AGM	H6/3.3L	Replacement 36 months	Performance months	760
48H6	H6/3.6L	Replacement 36 months	Performance months	730
H6-AGM	H6/3.6L	Replacement 36 months	Performance months	760

BATTERIES
H6/3.3L - Battery: 48H6 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 730
H6/3.3L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760
H6/3.6L - Battery: 48H6 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 730
H6/3.6L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760

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Buy the Right Battery for Your Porsche 911

Your 911 doesn't have an expiration date, but its battery does. The average car battery lasts three to five years. You want to replace your 1992 Porsche 911 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, bloated battery case, corrosion-covered posts, or dim headlights can all be signs that your battery is waving goodbye.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. Our equipment can see how much charge is left in your battery. Visit us for a complimentary battery check and, if needed, get your Porsche 911 a replacement battery. Automotive batteries are just one of our many areas of expertise. Our expert technicians understand Porsche service recommendations for 911 battery cold cranking amps and reserve capacity. Get help figuring out the battery size that's best for your 911, and schedule a fast car battery replacement at your earliest convenience.

Why Choose a DieHard Battery for Your 911?

Your Porsche 911 deserves the best, which is why we exclusively carry the best. You need a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries shatter expectations using the latest innovative technology to meet the increasing power requirements of new vehicles. They're no ordinary battery, they're extraordinary. Go with a DieHard battery for your 911 and have the peace of mind that performance will be there when you're counting on it. That’s why you should choose batteries from Firestone Complete Auto Care.

Caring for a New Porsche 911 Battery

Have you recently had a fresh battery installed in your Porsche 911? Great job! Give your new car battery the best start with proper care. Help extend your car battery’s life by decreasing the number of short trips you take, keeping your battery posts clean, and not playing the radio or using other electronics when the engine is turned off.

Answers to Your 911 Car Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have battery questions that are Porsche 911-specific, pay us a visit. Our technicians are happy to help.

Why doesn’t my 911 battery stay charged? A car battery that needs to be jump-started every time is as good as dead. It may be getting old. Or, you may have been leaving your car doors ajar and the cabin light at night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care to learn more about the state of your battery.
What happens to my old 911 battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
How much will replacing my Porsche 911’s battery cost if I get a DieHard battery? 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 often should I replace my car battery? 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 911’s battery post? A chemical reaction between battery acid and the air can cause a white, crusty buildup to form on the terminals of your 911 car battery. This buildup — known as corrosion — can impede the flow of electricity and cause a range of issues, from poor performance to premature battery failure.
How do I clean a corroded 911 battery terminal? Regularly inspecting and cleaning your battery terminals will help keep your 911’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 purchase 911 batteries near me? You can shop for 911 batteries at your local Firestone Complete Auto Care, and our expert technicians will even handle the installation. Don’t have time to visit our store? Our Firestone Direct mobile vans can come to you for battery installations! Learn more about our mobile battery services.