Why doesn’t my SLK300 battery stay charged?

A battery that won't hold a charge is almost as good as dead. The battery might be old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop in for a free battery check at your nearest Firestone Complete Auto Care and get a handle on your car battery’s health.

What do you do with my old SLK300 battery?

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

What’s the cost of DieHard batteries for Mercedes-Benz SLK300s?

Get affordable prices on Mercedes-Benz SLK300 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 long is a car battery good for?

Car battery lifespan varies depending on a few factors, including driving conditions, accessories, how well it’s maintained, and the type of battery. On average, a car battery lasts about three to five years.

Why is there white, crusty buildup on my SLK300’s battery post?

The white, crusty stuff that can accumulate around SLK300 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 SLK300 car 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 SLK300 owner’s manual for instructions on how to do so.

Where can I find a battery for my SLK300?

You can shop for SLK300 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.

Car Batteries for 2011 Mercedes-Benz SLK300

Get a New Mercedes-Benz Battery

Get a Battery for Your Mercedes-Benz SLK300

Don’t let a dead battery stop you. Shop replacement car batteries for your 2011 Mercedes-Benz SLK300 at Firestone Complete Auto Care.

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2011 Mercedes-Benz SLK300 Battery Replacement & Size

Not sure what battery to get for your Mercedes-Benz SLK300? Check the chart to find the right car battery size and cold cranking amps for your SLK300.

Battery	Engine	Warranty		Cold Cranking Amps
48H6	V6/3.0L	Replacement 36 months	Performance months	730
H6-AGM	V6/3.0L	Replacement 36 months	Performance months	760

BATTERIES
V6/3.0L - Battery: 48H6 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 730
V6/3.0L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760

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Shopping for Mercedes-Benz SLK300 Car Batteries

You can pretty much drive your Mercedes-Benz SLK300 until you don't want to anymore. But your SLK300's battery? Don't count on it to last forever. 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 Mercedes-Benz SLK300 stranded. Look out for symptoms of a faulty car battery. A lagging starter, an illuminated check engine light or battery signal, bloated battery case, corrosion-covered posts, and subpar electrical performance can all be signs that your battery needs attention.

Or, you can get a complimentary battery check at your nearest Firestone Complete Auto Care. 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 2011 Mercedes-Benz SLK300 running! Car batteries are one of our many specialties! Our expert technicians understand Mercedes-Benz service recommendations for SLK300 battery cold cranking amps and reserve capacity. Get help figuring out the battery size that fits your car perfectly, and schedule an appointment today for a quick car battery replacement.

Is There a DieHard Battery for SLK300s?

Your Mercedes-Benz SLK300 deserves the best, which is why we carry just that. Your vehicle needs a reliable, durable and powerful battery in even some of the toughest conditions. DieHard batteries shatter expectations using state-of-the-art advancements to meet the increasing power needs of modern vehicles Don't call a DieHard battery ordinary. It's an extraordinary battery. Choose a DieHard battery for your Mercedes-Benz SLK300 and have the peace of mind that performance will be there when you need it most. That's the kind of battery we deliver.

Making Your SLK300’s New Battery Last

Got a new car battery installed in your 2011 Mercedes-Benz SLK300? Congrats! Give your new car battery the best start with proper care. turning off all of the lights when you leave your vehicle, cutting back on unnecessary short trips, cleaning your battery posts, and not playing the radio or using other electronics when the engine is turned off.

Commonly Asked SLK300 Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have battery questions that are Mercedes-Benz SLK300-specific, pay us a visit. Our technicians have the answers.

Why doesn’t my SLK300 battery stay charged? A battery that won't hold a charge is almost as good as dead. The battery might be old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop in for a free battery check at your nearest Firestone Complete Auto Care and get a handle on your car battery’s health.
What do you do with my old SLK300 battery? We recycle it, taking care of both your car and the Earth.
What’s the cost of DieHard batteries for Mercedes-Benz SLK300s? Get affordable prices on Mercedes-Benz SLK300 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 long is a car battery good for? Car battery lifespan varies depending on a few factors, including driving conditions, accessories, how well it’s maintained, and the type of battery. On average, a car battery lasts about three to five years.
Why is there white, crusty buildup on my SLK300’s battery post? The white, crusty stuff that can accumulate around SLK300 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 SLK300 car 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 SLK300 owner’s manual for instructions on how to do so.
Where can I find a battery for my SLK300? You can shop for SLK300 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.