Why doesn’t my SL550 battery stay charged?

A battery that won't hold a charge is almost as good as dead. It may be getting old. Or, you may have been leaving your car doors ajar and the cabin light at night. Stop in for a free battery check at your local Firestone Complete Auto Care and get a handle on your car battery’s health.

What happens to my old SL550 battery?

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

How much will replacing my Mercedes-Benz SL550’s battery cost if I get a DieHard battery?

You can find affordable SL550 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.

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.

How do I clean corrosion off my SL550 vehicle battery?

To help extend the life of your battery, you should routinely inspect and clean the terminals using a baking soda and water mix, wire brush, and rag. Be sure to disconnect the battery cables before cleaning and check your SL550 owner’s manual for instructions on how to do so.

Who carries SL550 batteries near me?

At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install SL550 batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.

2015 Mercedes-Benz SL550 Car Batteries

Get a New Mercedes-Benz Battery

Get a New Mercedes-Benz SL550 Battery

Don't let a failing battery slow you down. Shop replacement batteries for 2015 Mercedes-Benz SL550s today and schedule a quick installation at Firestone Complete Auto Care.

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2015 Mercedes-Benz SL550 Battery Replacement & Size

Not sure what battery to get 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
H8-AGM	V8/4.7L	Replacement 36 months	Performance months	900

BATTERIES
V8/4.7L - Battery: H8-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 900

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Shopping for Mercedes-Benz SL550 Car Batteries

Sadly, your Mercedes-Benz SL550 won't last forever. Neither will its battery. 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, bloated battery case, corroded battery terminals, or faded headlights can all signal that your battery is waving goodbye.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. 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, get your Mercedes-Benz SL550 a replacement battery. Car batteries are only one of our many strong suits. Our technicians are familiar with Mercedes-Benz-specific recommendations for SL550 car batteries’ reserve capacities and cold cranking amps. Get help identifying the type and size of battery that matches your vehicle, and schedule a fast car battery replacement at your earliest convenience.

Firestone Has DieHard Batteries for SL550s

We know what’s best for your Mercedes-Benz SL550, which is why we exclusively carry the best. Your SL550 needs a reliable, durable and powerful battery that can handle most extreme environments and weather conditions. DieHard batteries shatter expectations using the latest innovative technology to satisfy the expanding power requirements of modern vehicles A DieHard battery isn't an ordinary car battery. It's extraordinary. Buy a DieHard battery for your Mercedes-Benz SL550 and get behind the wheel with confidence. Why? Because your battery will perform when you need it. That's the kind of battery we deliver.

Making Your SL550’s New Battery Last

Got a new car battery installed in your 2015 Mercedes-Benz SL550? Congrats! Now, help it last longer and stay charged by caring for it from the get-go. flipping the dome lights and headlights off when exiting the car, decreasing the number of short trips you take, keeping the battery posts corrosion-free, and avoiding radio and electronic component use when the engine is off.

Answers to Your SL550 Car Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have a battery question that's unique to your Mercedes-Benz SL550 battery, stop by your nearest store. Our technicians have the answers.

Why doesn’t my SL550 battery stay charged? A battery that won't hold a charge is almost as good as dead. It may be getting old. Or, you may have been leaving your car doors ajar and the cabin light at night. Stop in for a free battery check at your local Firestone Complete Auto Care and get a handle on your car battery’s health.
What happens to my old SL550 battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
How much will replacing my Mercedes-Benz SL550’s battery cost if I get a DieHard battery? You can find affordable SL550 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.
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.
How do I clean corrosion off my SL550 vehicle battery? To help extend the life of your battery, you should routinely inspect and clean the terminals using a baking soda and water mix, wire brush, and rag. Be sure to disconnect the battery cables before cleaning and check your SL550 owner’s manual for instructions on how to do so.
Who carries SL550 batteries near me? At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install SL550 batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.