Why doesn’t my Cougar 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 in for a free battery check at your favorite 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 do DieHard batteries cost for your Mercury Cougar?

You can find affordable Cougar batteries by using one of our car battery coupons, when available. Plus, every DieHard battery comes with extra coverage thanks to DieHard Assurance and a free replacement warranty.

How long do car batteries last?

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 Cougar’s battery post?

A chemical reaction between battery acid and the air can cause a white, crusty buildup to form on the terminals of your Cougar car battery. This buildup — known as corrosion — can impede the flow of electricity and cause a range of issues, from poor performance to premature battery failure.

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

Regularly inspect the terminals and clean them with a mixture of baking soda and water, a wire brush, and a rag. Disconnect the battery cables before cleaning to help avoid the risk of electrical shock. Always reference and follow the instructions in your vehicle owner’s manual prior to disconnecting the battery cables.

Where can I purchase Cougar batteries near me?

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

1989 Mercury Cougar Car Batteries

Get a New Mercury Battery

Get a New Mercury Cougar Battery

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 1989 Mercury Cougar today and schedule a quick installation at Firestone Complete Auto Care.

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The Right Battery Size for a 1989 Mercury Cougar

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

Battery	Engine	Warranty		Cold Cranking Amps
58-2	V6/3.8L	Replacement 24 months	Performance months	550
65-2	V6/3.8L	Replacement 36 months	Performance months	850
65-AGM	V6/3.8L	Replacement 36 months	Performance months	750

BATTERIES
V6/3.8L - Battery: 58-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 550
V6/3.8L - Battery: 65-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850
V6/3.8L - Battery: 65-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 750

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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. Don’t get stranded by your Cougar’s car battery. Replace it regularly instead! Pay attention to clues that your battery is on its way out. A lagging starter, a blinking battery or check engine light, swollen battery case, corroded battery posts, or faded headlights can all be signs that your battery is on its last leg.

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. Drop in for a free battery check and, if needed, a replacement battery for your 1989 Mercury Cougar. Car batteries are only one of our many strong suits. Our technicians are familiar with Mercury-specific recommendations for Cougar battery cold cranking amps and reserve capacity. Get help choosing the battery size that fits your car perfectly, and schedule a weekday or weekend battery replacement service for your car.

Firestone Has DieHard Batteries for Cougars

We know what’s best for your Mercury Cougar, which is why we only carry top-of-the-line replacement parts and batteries. Your Cougar needs a reliable, durable and powerful battery in even some of the toughest conditions. DieHard Cougar batteries surpass expectations using the latest innovative technology to meet the growing power requirements of modern vehicles They're no ordinary battery, they're extraordinary. Buy a DieHard battery for your Mercury Cougar and have the peace of mind that your battery will perform when you need it. That's the kind of battery we deliver.

After Buying 1989 Mercury Cougar Battery

Got a new car battery installed in your 1989 Mercury Cougar? Good thinking! 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, cleaning your battery posts, and not playing the radio or using other electronics when the engine is turned off.

Answers to Your Cougar Car Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have battery questions that are Mercury Cougar-specific, pay us a visit. Our technicians are happy to help.

Why doesn’t my Cougar 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 in for a free battery check at your favorite 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 do DieHard batteries cost for your Mercury Cougar? You can find affordable Cougar batteries by using one of our car battery coupons, when available. Plus, every DieHard battery comes with extra coverage thanks to DieHard Assurance and a free replacement warranty.
How long do car batteries last? 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 Cougar’s battery post? A chemical reaction between battery acid and the air can cause a white, crusty buildup to form on the terminals of your Cougar car battery. This buildup — known as corrosion — can impede the flow of electricity and cause a range of issues, from poor performance to premature battery failure.
What do I do about corrosion on my Cougar car battery? Regularly inspect the terminals and clean them with a mixture of baking soda and water, a wire brush, and a rag. Disconnect the battery cables before cleaning to help avoid the risk of electrical shock. Always reference and follow the instructions in your vehicle owner’s manual prior to disconnecting the battery cables.
Where can I purchase Cougar batteries near me? At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install Cougar batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.