Why won’t my SLK350 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 been leaving your car doors ajar and the dome lights on during the night. Stop by for a free battery test at your nearest Firestone Complete Auto Care and get a handle on your car battery’s health.

What happens to my old SLK350 battery?

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

How much will replacing my Mercedes-Benz SLK350’s battery cost if I get a DieHard battery?

Mercedes-Benz SLK350 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.

How long is a car battery good for?

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 SLK350’s battery post?

The white, crusty stuff that can accumulate around SLK350 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 SLK350 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 SLK350 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 carries SLK350 batteries near me?

Your local Firestone Complete Auto Care sells and installs SLK350 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

2009 Mercedes-Benz SLK350 Car Batteries

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Mercedes-Benz SLK350 Batteries Near You

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 2009 Mercedes-Benz SLK350 today and schedule a quick installation at Firestone Complete Auto Care.

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2009 Mercedes-Benz SLK350 Battery Replacement & Size

Need more info about Mercedes-Benz SLK350 batteries? Use this chart to find the right battery size and CCAs for your Mercedes-Benz SLK350.

Battery	Engine	Warranty		Cold Cranking Amps
47H5	V6/3.5L	Replacement 36 months	Performance months	650
H5-AGM	V6/3.5L	Replacement 36 months	Performance months	680

BATTERIES
V6/3.5L - Battery: 47H5 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 650
V6/3.5L - Battery: H5-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 680

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Shopping for Mercedes-Benz SLK350 Car Batteries

Your SLK350 doesn't have an expiration date, but its battery does. Generally, car batteries last from three to five years. You want to replace your 2009 Mercedes-Benz SLK350 battery before it fails and leaves you stranded. 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, bloated battery case, corrosion-covered posts, or dim headlights may all indicate that your battery needs attention.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. With computerized testing we can see how much charge is left in your battery. Drop in for a free battery check and, if necessary, a battery replacement to help keep your 2009 Mercedes-Benz SLK350 running! Automotive batteries are just one of our many areas of expertise. Our expert technicians understand Mercedes-Benz service recommendations for SLK350 battery CCAs and reserve capacity. Get help figuring out the battery size that fits your car perfectly, and schedule a fast car battery replacement at your earliest convenience.

Why Choose a DieHard Battery for Your SLK350?

We only want what’s best for your Mercedes-Benz SLK350, which is why we only carry top-of-the-line replacement parts and batteries. You need a reliable, durable and powerful battery that can handle most extreme environments and weather conditions. DieHard batteries go above and beyond and house the latest technology to satisfy the increasing 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 SLK350 and have the peace of mind that your battery will perform when you need it. That's the kind of battery we deliver.

Caring for a New Mercedes-Benz SLK350 Battery

Have you recently had a fresh battery installed in your Mercedes-Benz SLK350? Congrats! Now, help it last longer and stay charged by caring for it from the get-go. turning off all of the lights when you leave your vehicle, decreasing the number of short trips you take, keeping your battery posts clean, and avoiding radio and electronic component use when the engine is off.

Commonly Asked SLK350 Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have a battery question that's unique to your Mercedes-Benz SLK350 battery, visit your nearest store. Our expert techs have the answers you need.

Why won’t my SLK350 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 been leaving your car doors ajar and the dome lights on during the night. Stop by for a free battery test at your nearest Firestone Complete Auto Care and get a handle on your car battery’s health.
What happens to my old SLK350 battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
How much will replacing my Mercedes-Benz SLK350’s battery cost if I get a DieHard battery? Mercedes-Benz SLK350 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.
How long is a car battery good for? 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 SLK350’s battery post? The white, crusty stuff that can accumulate around SLK350 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 SLK350 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 SLK350 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 carries SLK350 batteries near me? Your local Firestone Complete Auto Care sells and installs SLK350 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.