Why won’t my Mountaineer battery hold a charge?

A battery that won't hold a charge is almost as good as dead. It may be getting old. Or, you may have a habit of leaving your car doors open and the cabin light at night. Stop by for a free battery test at your nearest Firestone Complete Auto Care and learn more about your battery's charge.

What do you do with my old Mountaineer battery?

We’ll recycle your car battery for you!

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

Mercury Mountaineer 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?

A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.

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

The white, crusty stuff that can accumulate around Mountaineer 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.

How do I remove corrosion from my Mountaineer car battery?

You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your Mountaineer 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.

Where can I purchase Mountaineer batteries near me?

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

2005 Mercury Mountaineer Batteries

Get a New Mercury Battery

Get a Battery for Your Mercury Mountaineer

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 2005 Mercury Mountaineer today and schedule a quick installation at Firestone Complete Auto Care.

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The Right Battery Size for a 2005 Mercury Mountaineer

Researching battery replacements for your Mercury Mountaineer? Use the following chart to find information on Mercury Mountaineer battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
65-1	V6/4.0L	Replacement 24 months	Performance months	850
65-2	V6/4.0L	Replacement 36 months	Performance months	850
65-AGM	V6/4.0L	Replacement 36 months	Performance months	750
65-1	V8/4.6L	Replacement 24 months	Performance months	850
65-2	V8/4.6L	Replacement 36 months	Performance months	850
65-AGM	V8/4.6L	Replacement 36 months	Performance months	750

BATTERIES
V6/4.0L - Battery: 65-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 850
V6/4.0L - Battery: 65-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850
V6/4.0L - Battery: 65-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 750
V8/4.6L - Battery: 65-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 850
V8/4.6L - Battery: 65-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850
V8/4.6L - Battery: 65-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 750

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Shopping for Mercury Mountaineer Car Batteries

Sadly, your Mercury Mountaineer won't last forever. Neither will its battery. The average car battery lasts three to five years. Check your battery regularly and replace it as needed so it doesn’t leave you and your Mercury Mountaineer stranded. Pay attention to clues that your battery is on its way out. A slow engine crank, an illuminated battery or check engine light, swollen battery case, corrosion-covered posts, or dim 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. Our equipment can see how much charge is left in your battery. Visit us for a complimentary battery check and, if necessary, a battery replacement to help keep your 2005 Mercury Mountaineer running! Automotive batteries are just one of our many areas of expertise. Our expert technicians understand Mercury service recommendations for Mountaineer battery CCAs and reserve capacity. Get help identifying the type and size of battery that fits your car perfectly, and schedule a weekday or weekend battery replacement service for your car.

Why Choose a DieHard Battery for Your Mountaineer?

Your Mercury Mountaineer deserves the best, which is why we exclusively carry the best. You need a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries shatter expectations using the latest innovative technology to satisfy the increasing power needs of modern vehicles They're no ordinary battery, they're extraordinary. Go with a DieHard battery for your Mountaineer and have the peace of mind 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 Mountaineer’s New Battery Last

Did you recently have a new 2005 Mercury Mountaineer car battery installed? Good thinking! Now, help it last longer and stay charged by caring for it from the get-go. You can take care of your battery by limiting short trips, keeping your battery posts clean, and avoiding radio and electronic component use when the engine is off.

Commonly Asked Mountaineer Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have battery questions that are Mercury Mountaineer-specific, stop by your nearest store. Our technicians have the answers.

Why won’t my Mountaineer battery hold a charge? A battery that won't hold a charge is almost as good as dead. It may be getting old. Or, you may have a habit of leaving your car doors open and the cabin light at night. Stop by for a free battery test at your nearest Firestone Complete Auto Care and learn more about your battery's charge.
What do you do with my old Mountaineer battery? We’ll recycle your car battery for you!
How much will replacing my Mercury Mountaineer’s battery cost if I get a DieHard battery? Mercury Mountaineer 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? A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.
Why is there white, flaky stuff around my Mountaineer’s battery post? The white, crusty stuff that can accumulate around Mountaineer 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.
How do I remove corrosion from my Mountaineer car battery? You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your Mountaineer 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.
Where can I purchase Mountaineer batteries near me? At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install Mountaineer batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.