Why won’t my SL550 battery hold a charge?

A battery that won't hold a charge is almost as good as dead. The battery may be too old. Or, you’ve been leaving the doors slightly open and the cabin light at night. Stop by for a complimentary battery check at your local Firestone Complete Auto Care and learn more about your battery's charge.

What do you do with my old SL550 battery?

We’ll recycle your car battery for you!

How much do DieHard batteries cost for your Mercedes-Benz SL550?

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.

What is the average lifespan of a car battery?

The typical 12-volt car battery may last three to five years, depending on the type of battery, the driving conditions, and how well the battery is maintained.

Why is there white, flaky stuff around my SL550’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 SL550 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.

How do I clean corrosion off my SL550 vehicle 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.

Where can I purchase SL550 batteries near me?

Your local Firestone Complete Auto Care sells and installs SL550 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

2011 Mercedes-Benz SL550 Car Batteries

Get a New Mercedes-Benz Battery

Get a New Mercedes-Benz SL550 Battery

Don’t let a dead battery stop you. Shop replacement car batteries for your 2011 Mercedes-Benz SL550 at Firestone Complete Auto Care.

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The Right Battery Size for a 2011 Mercedes-Benz SL550

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

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! Watch for signs that your current battery is getting too old or too weak. A sluggish engine start, a blinking battery or check engine light, bloated battery case, corroded battery posts, or faded headlights can all be signs that your battery is waving goodbye.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. With computerized testing we 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 2011 Mercedes-Benz SL550 running! Automotive batteries are just one of our many areas of expertise. Our technicians are familiar with Mercedes-Benz-specific recommendations for SL550 battery CCAs and reserve capacity. Get help choosing the battery size that matches your vehicle, and schedule a fast car battery replacement at your earliest convenience.

Find the Right DieHard Battery for Your SL550

We know what’s best for your Mercedes-Benz SL550, which is why we carry just that. You need a reliable, durable and powerful battery in extremely hot and cold environments. DieHard batteries go above and beyond using state-of-the-art advancements to satisfy the expanding power requirements of new vehicles. Don't call a DieHard battery ordinary. It's an extraordinary battery. Buy a DieHard battery for your Mercedes-Benz SL550 and get behind the wheel with confidence. Why? Because performance will be there when you need it most. That’s why you should choose batteries from Firestone Complete Auto Care.

Caring for a New Mercedes-Benz SL550 Battery

Did you recently have a new 2011 Mercedes-Benz SL550 car battery installed? Good thinking! You can give your new battery a head start with proper care and attention. Give your new battery a hand by cutting back on unnecessary short trips, keeping the battery posts corrosion-free, and avoiding radio and electronic component use when the engine is off.