Why won’t my 928 battery hold a charge?

A battery that won't hold a charge is almost as good as dead. The battery might be 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 get a handle on your car battery’s health.

What do you do with my old 928 battery?

We’ll recycle your car battery for you!

What’s the cost of DieHard batteries for Porsche 928s?

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 often should I replace my 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 substance accumulating on my 928’s battery post?

The white, flaky stuff that can build up around your 928’s battery terminals is known as corrosion. Acid leaking from your vehicle’s battery post can have a chemical reaction with the air, leading to an accumulation of the white, powdery substance over time. Corrosion can affect the flow of electricity between your battery and the electrical system in your 928, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.

What do I do about corrosion on my 928 car battery?

Regularly inspecting and cleaning your battery terminals will help keep your 928’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.

Who sells 928 batteries near me?

Your local Firestone Complete Auto Care sells and installs 928 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

Car Batteries for 1985 Porsche 928

Get a New Porsche Battery

Get a Battery for Your Porsche 928

Don't let a failing battery slow you down. Shop replacement batteries for 1985 Porsche 928s today and schedule a quick installation at Firestone Complete Auto Care.

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Battery Size & Replacement for 1985 Porsche 928

Researching battery replacements for your Porsche 928? Check the chart to find the right car battery size and cold cranking amps for your 928.

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

Sadly, your Porsche 928 won't last forever. Neither will its battery. On average, auto batteries last anywhere from three to five years. Check your battery regularly and replace it as needed so it doesn’t leave you and your Porsche 928 stranded. Look out for symptoms of a faulty car battery. A slow engine crank, a blinking battery or check engine light, bloated battery case, corrosion-covered posts, or faded headlights can all signal 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. Drop in for a free battery check and, if needed, get your Porsche 928 a replacement battery. Automotive batteries are just one of our many areas of expertise. Our technicians are familiar with Porsche-specific recommendations for 928 car batteries’ reserve capacities and cold cranking amps. Get help figuring out the battery size that matches your vehicle, and schedule a fast car battery replacement at your earliest convenience.

Why Choose a DieHard Battery for Your 928?

We only want what’s best for your Porsche 928, which is why we only carry top-of-the-line replacement parts and batteries. You need a reliable, durable and powerful battery in extremely hot and cold environments. DieHard batteries go above and beyond using the latest innovative technology to satisfy the growing power demands of new vehicles. Don't call a DieHard battery ordinary. It's an extraordinary battery. Buy a DieHard battery for your Porsche 928 and have the peace of mind that your battery will perform when you need it. That’s why you should choose batteries from Firestone Complete Auto Care.

Caring for a New Porsche 928 Battery

Got a new car battery installed in your 1985 Porsche 928? 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 decreasing the number of short trips you take, keeping your battery posts clean, and avoiding radio and electronic component use when the engine is off.

Answers to Your 928 Car Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have battery questions that are Porsche 928-specific, stop by your nearest store. Our expert techs have the answers you need.

Why won’t my 928 battery hold a charge? A battery that won't hold a charge is almost as good as dead. The battery might be 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 get a handle on your car battery’s health.
What do you do with my old 928 battery? We’ll recycle your car battery for you!
What’s the cost of DieHard batteries for Porsche 928s? 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 often should I replace my 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 substance accumulating on my 928’s battery post? The white, flaky stuff that can build up around your 928’s battery terminals is known as corrosion. Acid leaking from your vehicle’s battery post can have a chemical reaction with the air, leading to an accumulation of the white, powdery substance over time. Corrosion can affect the flow of electricity between your battery and the electrical system in your 928, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.
What do I do about corrosion on my 928 car battery? Regularly inspecting and cleaning your battery terminals will help keep your 928’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.
Who sells 928 batteries near me? Your local Firestone Complete Auto Care sells and installs 928 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.