Why won't my 928 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 dome lights on during the night. Stop by for a complimentary battery check at your local Firestone Complete Auto Care and learn more about your battery's charge.

What do you do with my old 928 battery?

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

How much do DieHard batteries cost for your Porsche 928?

Porsche 928 batteries can be affordable, especially when there's an available battery coupon. The best part is every DieHard battery comes with a free replacement warranty and extra coverage with DieHard Assurance.

How long is a car battery good for?

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 substance accumulating on my 928’s battery post?

The white, crusty stuff that can accumulate around 928 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 928 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 928 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 find a battery for my 928?

At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install 928 batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.

Car Batteries for 1990 Porsche 928

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Porsche 928 Batteries Near You

Don't let a failing battery slow you down. Shop replacement batteries for 1990 Porsche 928s today and schedule a quick installation at Firestone Complete Auto Care.

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Battery Size & Replacement for 1990 Porsche 928

Not sure what battery to get for your Porsche 928? Use the following chart to find information on Porsche 928 battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
48H6	V8/5.0L	Replacement 36 months	Performance months	730
H6-AGM	V8/5.0L	Replacement 36 months	Performance months	760

BATTERIES
V8/5.0L - Battery: 48H6 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 730
V8/5.0L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760

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Buying a Replacement Battery for Porsche 928

Your 928 doesn't have an expiration date, but its battery does. The average car battery lasts three to five years. You want to replace your 1990 Porsche 928 battery before it fails and leaves you stranded. Look out for symptoms of a faulty car battery. A sluggish engine start, an illuminated check engine light or battery signal, swollen battery case, corroded battery terminals, or faded headlights can all be signs that your battery is on its last leg.

Or, you can get a complimentary battery check at your nearest Firestone Complete Auto Care. With computerized testing we can see how much charge is left in your battery. Stop by for a free battery test and, if needed, get your Porsche 928 a replacement battery. Car batteries are only one of our many strong suits. Our technicians are familiar with Porsche-specific recommendations for 928 car batteries’ reserve capacities and cold cranking amps. Get help identifying the type and size of battery that fits your car perfectly, and schedule an appointment today for a quick car battery replacement.

Is There a DieHard Battery for 928s?

Your Porsche 928 deserves the best, which is why we exclusively carry the best. You need a reliable, durable and powerful battery in even some of the toughest conditions. DieHard batteries shatter expectations using the latest innovative technology to fuel the expanding power needs of new vehicles and their accessories. A DieHard battery isn't an ordinary car battery. It's extraordinary. Choose a DieHard battery for your Porsche 928 and get behind the wheel with confidence. Why? Because performance will be there when you're counting on it. That's the kind of battery we deliver.

Caring for a New Porsche 928 Battery

Did you recently have a new 1990 Porsche 928 car battery installed? Good thinking! Now, help it last longer and stay charged by caring for it from the get-go. ensuring all the lights are turned off before you leave the car, decreasing the number of short trips you take, cleaning your battery posts, and avoiding radio and electronic component use when the engine is off.

Answers to Your 928 Car Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a 928-specific battery question, stop by your nearest store. Our technicians have the answers.

Why won't my 928 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 dome lights on during the night. Stop by for a complimentary battery check at your local Firestone Complete Auto Care and learn more about your battery's charge.
What do you do with my old 928 battery? We recycle it, taking care of both your car and the Earth.
How much do DieHard batteries cost for your Porsche 928? Porsche 928 batteries can be affordable, especially when there's an available battery coupon. The best part is every DieHard battery comes with a free replacement warranty and extra coverage with DieHard Assurance.
How long is a car battery good for? 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 substance accumulating on my 928’s battery post? The white, crusty stuff that can accumulate around 928 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 928 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 928 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 find a battery for my 928? At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install 928 batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.