Why doesn’t my Marquis 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 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 Marquis battery?

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

How much will replacing my Mercury Marquis’s battery cost if I get a DieHard battery?

Mercury Marquis 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.

What is the average lifespan of a car battery?

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.

Why is there white, flaky stuff around my Marquis’s battery post?

The white, flaky stuff that can build up around your Marquis’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 Marquis, 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 corrosion off my Marquis vehicle battery?

To help extend the life of your battery, you should routinely inspect and clean the terminals using a baking soda and water mix, wire brush, and rag. Be sure to disconnect the battery cables before cleaning and check your Marquis owner’s manual for instructions on how to do so.

Where can I find a battery for my Marquis?

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

1984 Mercury Marquis Car Batteries

Get a New Mercury Battery

Mercury Marquis Batteries Near You

Don't let a failing battery slow you down. Shop replacement batteries for 1984 Mercury Marquiss today and schedule a quick installation at Firestone Complete Auto Care.

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Battery Size & Replacement for 1984 Mercury Marquis

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

Battery	Engine	Warranty		Cold Cranking Amps
56-1	L4/2.3L	Replacement 24 months	Performance months	550
56-1	V6/3.8L	Replacement 24 months	Performance months	550

BATTERIES
L4/2.3L - Battery: 56-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 550
V6/3.8L - Battery: 56-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 550

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Buy the Right Battery for Your Mercury Marquis

Your Marquis doesn't have an expiration date, but its battery does. The average car battery lasts three to five years. You want to replace your 1984 Mercury Marquis battery before it fails and leaves you stranded. Look out for symptoms of a faulty car battery. A lagging starter, an illuminated check engine light or battery signal, bloated battery case, corroded battery 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 Mercury Marquis a replacement battery. Car batteries are one of our many specialties! Our technicians are familiar with Mercury-specific recommendations for Marquis battery CCAs and reserve capacity. Get help identifying the type and size of battery that fits your car perfectly, and schedule a fast car battery replacement at your earliest convenience.

Firestone Has DieHard Batteries for Marquiss

We only want what’s best for your Mercury Marquis, which is why we carry just that. You need a reliable, durable and powerful battery in extremely hot and cold environments. DieHard batteries go above and beyond and house the latest technology to fuel the growing power demands of new vehicles. A DieHard battery isn't an ordinary car battery. It's extraordinary. Buy a DieHard battery for your Mercury Marquis and have the peace of mind that your battery will perform when you need it. That's the kind of battery we deliver.

Making Your Marquis’s New Battery Last

Got a new car battery installed in your 1984 Mercury Marquis? Congrats! You can give your new battery a head start with proper care and attention. Help extend your car battery’s life by decreasing the number of short trips you take, cleaning your battery posts, and not playing the radio or using other electronics when the engine is turned off.

Commonly Asked Marquis Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have a Marquis-specific battery question, pay us a visit. Our technicians have the answers.

Why doesn’t my Marquis 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 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 Marquis battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
How much will replacing my Mercury Marquis’s battery cost if I get a DieHard battery? Mercury Marquis 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.
What is the average lifespan of a car battery? 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.
Why is there white, flaky stuff around my Marquis’s battery post? The white, flaky stuff that can build up around your Marquis’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 Marquis, 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 corrosion off my Marquis vehicle battery? To help extend the life of your battery, you should routinely inspect and clean the terminals using a baking soda and water mix, wire brush, and rag. Be sure to disconnect the battery cables before cleaning and check your Marquis owner’s manual for instructions on how to do so.
Where can I find a battery for my Marquis? Your local Firestone Complete Auto Care sells and installs Marquis batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.