Why doesn’t my Cougar battery stay charged?

A battery is in its final hour when it will no longer hold a charge. It may be getting 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 happens to my old Cougar battery?

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

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

Mercury Cougar 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 do car batteries last?

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.

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

The white, crusty stuff that can accumulate around Cougar 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 Cougar car battery?

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

Where can I find a battery for my Cougar?

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

1987 Mercury Cougar Batteries

Get a New Mercury Battery

Mercury Cougar Batteries Near You

Don’t let a dead battery stop you. Shop replacement car batteries for your 1987 Mercury Cougar at Firestone Complete Auto Care.

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The Right Battery Size for a 1987 Mercury Cougar

Not sure what battery to get for your Mercury Cougar? Use this chart to find the right battery size and CCAs for your Mercury Cougar.

Battery	Engine	Warranty		Cold Cranking Amps
56-1	V6/3.8L	Replacement 24 months	Performance months	550
58-2	V8/5.0L	Replacement 24 months	Performance months	550
65-2	V8/5.0L	Replacement 36 months	Performance months	850

BATTERIES
V6/3.8L - Battery: 56-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 550
V8/5.0L - Battery: 58-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 550
V8/5.0L - Battery: 65-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850

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Shopping for Mercury Cougar Car Batteries

You can pretty much drive your Mercury Cougar until you don't want to anymore. But your Cougar's battery? Don't count on it to last forever. The average car battery lasts three to five years. You want to replace your 1987 Mercury Cougar battery before it fails and leaves you stranded. Pay attention to clues that your battery is on its way out. A lagging starter, an illuminated battery or check engine light, swollen battery case, corrosion-covered posts, or faded headlights may all indicate that your battery needs attention.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. With computerized testing we can see how much charge is left in your battery. Stop by for a free battery test and, if needed, a replacement battery for your 1987 Mercury Cougar. Car batteries are only one of our many strong suits. Our expert technicians understand Mercury service recommendations for Cougar battery cold cranking amps and reserve capacity. Get help figuring out the battery size that matches your vehicle, and schedule an appointment today for a quick car battery replacement.

Is There a DieHard Battery for Cougars?

Your Mercury Cougar deserves the best, which is why we only carry top-of-the-line replacement parts and batteries. You need a reliable, durable and powerful battery in even some of the toughest conditions. DieHard batteries go above and beyond and house the latest technology to satisfy the growing power demands of new vehicles. They're no ordinary battery, they're extraordinary. Buy a DieHard battery for your Mercury Cougar and get behind the wheel with confidence. Why? Because performance will be there when you need it most. That's the kind of battery we deliver.

After Buying 1987 Mercury Cougar Battery

Got a new car battery installed in your 1987 Mercury Cougar? Congrats! Now, help it last longer and stay charged by caring for it from the get-go. Help extend your car battery’s life by decreasing the number of short trips you take, keeping the battery posts corrosion-free, and not playing the radio or using other electronics when the engine is turned off.

Commonly Asked Cougar Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have battery questions that are Mercury Cougar-specific, visit your nearest store. Our expert techs have the answers you need.

Why doesn’t my Cougar battery stay charged? A battery is in its final hour when it will no longer hold a charge. It may be getting 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 happens to my old Cougar battery? We recycle it, taking care of both your car and the Earth.
How much will replacing my Mercury Cougar’s battery cost if I get a DieHard battery? Mercury Cougar 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 do car batteries last? 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.
Why is there white, flaky stuff around my Cougar’s battery post? The white, crusty stuff that can accumulate around Cougar 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 Cougar car battery? Regularly inspecting and cleaning your battery terminals will help keep your Cougar’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.
Where can I find a battery for my Cougar? Your local Firestone Complete Auto Care sells and installs Cougar batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.