Why won't my 928 battery stay charged?

A battery is in its final hour when it will no longer hold a charge. The battery may be too old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop by for a complimentary battery check at your nearest Firestone Complete Auto Care and learn more about your battery's charge.

What do you do with my dead 928 battery?

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

How much do DieHard batteries cost for your Porsche 928?

Get affordable prices on Porsche 928 batteries by using one of our limited-time battery deals. Plus, all DieHard car batteries come with a free replacement warranty and extra coverage with DieHard Assurance.

How long is a car battery good for?

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.

What is the white, crusty stuff around 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.

How do I clean a corroded 928 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 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.

Who sells 928 batteries near me?

You can shop for 928 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 1986 Porsche 928

Get a New Porsche Battery

Porsche 928 Batteries Near You

Don’t let a dead battery stop you. Shop replacement car batteries for your 1986 Porsche 928 at Firestone Complete Auto Care.

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1986 Porsche 928 Battery Replacement & Size

Not sure what battery to get 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
49H8	V8/5.0L	Replacement 36 months	Performance months	900
H6-AGM	V8/5.0L	Replacement 36 months	Performance months	760

BATTERIES
V8/5.0L - Battery: 49H8 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 900
V8/5.0L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760

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Buy the Right Battery for Your 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. You want to replace your 1986 Porsche 928 battery before it fails and leaves you stranded. Pay attention to clues that your battery is on its way out. A slow engine crank, an illuminated check engine light or battery signal, bloated battery case, corrosion-covered posts, and subpar electrical performance can all be signs that your battery is waving goodbye.

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 928 a replacement battery. Car batteries are one of our many specialties! Our technicians are well-acquainted with Porsche’s service specs for 928 car batteries’ reserve capacities and cold cranking amps. Get help figuring out the battery size that fits your car perfectly, and schedule a weekday or weekend battery replacement service for your car.

Is There a DieHard Battery for 928s?

We only want what’s best for your Porsche 928, which is why we exclusively carry the best. Your vehicle needs a reliable, durable and powerful battery in even some of the toughest conditions. DieHard batteries shatter expectations using state-of-the-art advancements to satisfy the growing power requirements of modern vehicles A DieHard battery isn't an ordinary car battery. It's extraordinary. Go with a DieHard battery for your 928 and drive with confidence knowing that performance will be there when you're counting on it. That’s why you should choose batteries from Firestone Complete Auto Care.

Making Your 928’s New Battery Last

Got a new car battery installed in your 1986 Porsche 928? Good thinking! Give your new car battery the best start with proper care. ensuring all the lights are turned off before you leave the car, cutting back on unnecessary short trips, keeping the battery posts corrosion-free, and not playing the radio or using other electronics when the engine is turned off.

Commonly Asked 928 Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a 928-specific battery question, visit your nearest store. Our expert techs have the answers you need.

Why won't my 928 battery stay charged? A battery is in its final hour when it will no longer hold a charge. The battery may be too old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop by for a complimentary battery check at your nearest Firestone Complete Auto Care and learn more about your battery's charge.
What do you do with my dead 928 battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
How much do DieHard batteries cost for your Porsche 928? Get affordable prices on Porsche 928 batteries by using one of our limited-time battery deals. Plus, all DieHard car batteries come with a free replacement warranty and extra coverage with DieHard Assurance.
How long is a car battery good for? 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.
What is the white, crusty stuff around 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.
How do I clean a corroded 928 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 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.
Who sells 928 batteries near me? You can shop for 928 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.