Why doesn’t my SL550 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 been leaving your car doors ajar and the lights on overnight. 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 dead SL550 battery?

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

What’s the cost of DieHard batteries for Mercedes-Benz SL550s?

Get affordable prices on Mercedes-Benz SL550 batteries by using one of our limited-time battery deals. Plus, all DieHard car batteries come with a free replacement warranty and extra coverage with DieHard Assurance.

How often should I replace my 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, crusty buildup on my SL550’s battery post?

The white, crusty stuff that can accumulate around SL550 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 SL550 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 SL550 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.

Who sells SL550 batteries near me?

You can shop for SL550 batteries at your local Firestone Complete Auto Care, and our expert technicians will even handle the installation. Don’t have time to visit our store? Our Firestone Direct mobile vans can come to you for battery installations! Learn more about our mobile battery services.

2012 Mercedes-Benz SL550 Batteries

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Mercedes-Benz SL550 Batteries Near You

Don't let a failing battery slow you down. Shop replacement batteries for 2012 Mercedes-Benz SL550s today and schedule a quick installation at Firestone Complete Auto Care.

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2012 Mercedes-Benz SL550 Battery Replacement & Size

Researching battery replacements for your Mercedes-Benz SL550? Use the following chart to find information on Mercedes-Benz SL550 battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
V4	V8/5.5L	Replacement 36 months	Performance months	520
H6-AGM	V8/5.5L	Replacement 36 months	Performance months	760

BATTERIES
V8/5.5L - Battery: V4 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 520
V8/5.5L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760

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Shopping for Mercedes-Benz SL550 Car Batteries

You can pretty much drive your Mercedes-Benz SL550 until you don't want to anymore. But your SL550'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 SL550’s car battery. Replace it regularly instead! 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, corroded battery terminals, and subpar electrical performance can all signal that your battery is on its last leg.

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. Stop by for a free battery test and, if needed, a replacement battery for your 2012 Mercedes-Benz SL550. Car batteries are only one of our many strong suits. Our technicians are well-acquainted with Mercedes-Benz’s service specs for SL550 battery cold cranking amps and reserve capacity. Get help choosing the battery size that's best for your SL550, and schedule an appointment today for a quick car battery replacement.

Why Choose a DieHard Battery for Your SL550?

We know what’s best for your Mercedes-Benz SL550, which is why we exclusively carry the best. Your vehicle needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries shatter expectations and house the latest technology to meet the increasing power demands of new vehicles. Don't call a DieHard battery ordinary. It's an extraordinary battery. Go with a DieHard battery for your SL550 and have the peace of mind that performance will be there when you're counting on it. That's the kind of battery we deliver.

Making Your SL550’s New Battery Last

Did you recently have a new 2012 Mercedes-Benz SL550 car battery installed? Good thinking! Now, help it last longer and stay charged by caring for it from the get-go. ensuring all the lights are turned off before you leave the car, cutting back on unnecessary short trips, cleaning your battery posts, and avoiding radio and electronic component use when the engine is off.

Answers to Your SL550 Car Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have a SL550-specific battery question, pay us a visit. Our expert techs have the answers you need.

Why doesn’t my SL550 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 been leaving your car doors ajar and the lights on overnight. 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 dead SL550 battery? We recycle it, taking care of both your car and the Earth.
What’s the cost of DieHard batteries for Mercedes-Benz SL550s? Get affordable prices on Mercedes-Benz SL550 batteries by using one of our limited-time battery deals. Plus, all DieHard car batteries come with a free replacement warranty and extra coverage with DieHard Assurance.
How often should I replace my 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, crusty buildup on my SL550’s battery post? The white, crusty stuff that can accumulate around SL550 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 SL550 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 SL550 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.
Who sells SL550 batteries near me? You can shop for SL550 batteries at your local Firestone Complete Auto Care, and our expert technicians will even handle the installation. Don’t have time to visit our store? Our Firestone Direct mobile vans can come to you for battery installations! Learn more about our mobile battery services.