Why won't my 911 battery stay charged?

A battery is in its final hour when it will no longer hold a charge. The battery might be old. Or, you may have a habit of leaving your car doors open and the dome lights on during the night. Stop by for a free battery test at your local Firestone Complete Auto Care and learn more about your battery's charge.

What do you do with my old 911 battery?

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

What’s the cost of DieHard batteries for Porsche 911s?

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.

What is the average lifespan of a car battery?

A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.

What is the white, crusty stuff around 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.

How do I clean a corroded 911 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 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.

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.

Car Batteries for 2009 Porsche 911

Get a New Porsche Battery

Get a Battery for Your Porsche 911

Don't let a failing battery slow you down. Shop replacement batteries for 2009 Porsche 911s today and schedule a quick installation at Firestone Complete Auto Care.

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Battery Size & Replacement for 2009 Porsche 911

Need more info about Porsche 911 batteries? Check the chart to find the right car battery size and cold cranking amps for your 911.

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
94RH7	H6/3.8L	Replacement 36 months	Performance months	800
H7-AGM	H6/3.8L	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
H6/3.8L - Battery: 94RH7 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
H6/3.8L - Battery: H7-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850

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Buy the Right Battery for Your Porsche 911

Your 911 doesn't have an expiration date, but its battery does. Generally, car batteries last from three to five years. You want to replace your 2009 Porsche 911 battery before it fails and leaves you stranded. Pay attention to clues that your battery is on its way out. A sluggish engine start, an illuminated battery or check engine light, swollen battery case, corrosion-covered posts, or dim headlights may all indicate that your battery is waving goodbye.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. With best-in-class tools we can tell you how much "life" is left in your battery. Drop in for a free battery check and, if necessary, a battery replacement to help keep your 2009 Porsche 911 running! Automotive batteries are just one of our many areas of expertise. Our technicians are well-acquainted with Porsche’s service specs for 911 battery CCAs and reserve capacity. Get help identifying the type and size of battery that's best for your 911, and schedule a fast car battery replacement at your earliest convenience.

Firestone Has DieHard Batteries for 911s

We know what’s best for your Porsche 911, which is why we exclusively carry the best. Your 911 needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard 911 batteries surpass expectations using the latest innovative technology to satisfy the expanding power requirements of new vehicles and their accessories. 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.

After Buying 2009 Porsche 911 Battery

Did you recently have a new 2009 Porsche 911 car battery installed? Congrats! Give your new car battery the best start with proper care. turning off all of the lights when you leave your vehicle, limiting short trips, keeping your battery posts clean, and not using electronics such as the radio and power outlets when the engine is off.