Why doesn’t my Cougar battery stay charged?

A car battery that needs to be jump-started every time is as good as dead. The battery may be too old. Or, you may have been leaving your car doors ajar and the dome lights on during the night. Stop in for a free battery check at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.

What do you do with my dead Cougar battery?

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

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

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.

What is the average lifespan of a car battery?

You can usually get three to five years out of your car battery. However, battery type, how well you maintain your battery, and your driving habits can all affect your battery’s lifespan.

What is the white, crusty stuff around 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?

When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install Cougar batteries at our stores nationwide — and our Firestone Direct mobile vans can provide convenient on-site battery services. Learn more about our mobile battery services and book an appointment.

1990 Mercury Cougar Car Batteries

Get a New Mercury Battery

Get a Battery for Your Mercury Cougar

Don’t let a dead battery stop you. Shop replacement car batteries for your 1990 Mercury Cougar at Firestone Complete Auto Care.

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The Right Battery Size for a 1990 Mercury Cougar

Not sure what battery to get for your Mercury Cougar? Check the chart to find the right car battery size and cold cranking amps for your Cougar.

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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Buying a Replacement Battery for Mercury Cougar

Sadly, your Mercury Cougar won't last forever. Neither will its battery. The average car battery lasts three to five years. Don’t get stranded by your Cougar’s car battery. Replace it regularly instead! Watch for signs that your current battery is getting too old or too weak. A slow engine crank, an illuminated check engine light or battery signal, swollen battery case, corrosion-covered posts, or faded headlights can all signal that your battery needs attention.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. With best-in-class tools we can tell you how much "life" is left in your battery. Visit us for a complimentary battery check and, if needed, get your Mercury Cougar a replacement battery. Automotive batteries are just one of our many areas of expertise. Our expert technicians understand Mercury service recommendations for Cougar car batteries’ reserve capacities and cold cranking amps. Get help identifying the type and size of battery that matches your vehicle, and schedule a weekday or weekend battery replacement service for your car.

Why Choose a DieHard Battery for Your Cougar?

Your Mercury Cougar deserves the best, which is why we exclusively carry the best. Your Cougar needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard Cougar batteries surpass expectations using state-of-the-art advancements to satisfy the expanding power demands of new vehicles and their accessories. Don't call a DieHard battery ordinary. It's an extraordinary battery. Go with a DieHard battery for your Cougar and get behind the wheel with confidence. Why? Because your battery will perform when you need it. That’s why you should choose batteries from Firestone Complete Auto Care.

After Buying 1990 Mercury Cougar Battery

Did you recently have a new 1990 Mercury Cougar car battery installed? 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 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 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, stop by your nearest store. Our technicians have the answers.

Why doesn’t my Cougar battery stay charged? A car battery that needs to be jump-started every time is as good as dead. The battery may be too old. Or, you may have been leaving your car doors ajar and the dome lights on during the night. Stop in for a free battery check at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.
What do you do with my dead Cougar battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
How much will replacing my Mercury Cougar’s battery cost if I get a DieHard battery? 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.
What is the average lifespan of a car battery? You can usually get three to five years out of your car battery. However, battery type, how well you maintain your battery, and your driving habits can all affect your battery’s lifespan.
What is the white, crusty stuff around 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? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install Cougar batteries at our stores nationwide — and our Firestone Direct mobile vans can provide convenient on-site battery services. Learn more about our mobile battery services and book an appointment.