Why doesn’t my 300CD 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 a habit of leaving your car doors open and the cabin light at night. Stop in for a free battery check at your favorite Firestone Complete Auto Care to learn more about the state of your battery.

What do you do with my dead 300CD battery?

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

What’s the cost of DieHard batteries for Mercedes-Benz 300CDs?

Mercedes-Benz 300CD 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 do car batteries last?

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, crusty buildup on my 300CD’s battery post?

If you notice white, crusty stuff around the battery terminals of your 300CD, it's likely corrosion. A chemical reaction between battery acid and the air can create a white, powdery substance that builds up over time on the terminals. This buildup can interfere with the electrical connection between the battery and your 300CD’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.

How do I remove corrosion from my 300CD 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 300CD 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 300CD batteries near me?

You can shop for 300CD 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 1984 Mercedes-Benz 300CD

Get a New Mercedes-Benz Battery

Get a New Mercedes-Benz 300CD Battery

Don't let a failing battery slow you down. Shop replacement batteries for 1984 Mercedes-Benz 300CDs today and schedule a quick installation at Firestone Complete Auto Care.

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1984 Mercedes-Benz 300CD Battery Replacement & Size

Not sure what battery to get for your Mercedes-Benz 300CD? Use the following chart to find information on Mercedes-Benz 300CD battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
93-1	L5/3.0L	Replacement 24 months	Performance months	825
49H8	L5/3.0L	Replacement 36 months	Performance months	900
H8-AGM	L5/3.0L	Replacement 36 months	Performance months	900

BATTERIES
L5/3.0L - Battery: 93-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 825
L5/3.0L - Battery: 49H8 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 900
L5/3.0L - Battery: H8-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 900

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Buy the Right Battery for Your Mercedes-Benz 300CD

Your 300CD doesn't have an expiration date, but its battery does. On average, auto batteries last anywhere from three to five years. You want to replace your 1984 Mercedes-Benz 300CD battery before it fails and leaves you stranded. Pay attention to clues that your battery is on its way out. A lagging starter, an illuminated battery or check engine light, swollen battery case, corroded battery posts, and subpar electrical performance may all indicate that your battery needs attention.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. Our equipment can see how much charge is left in your battery. Stop by for a free battery test and, if needed, a replacement battery for your 1984 Mercedes-Benz 300CD. Automotive batteries are just one of our many areas of expertise. Our technicians are well-acquainted with Mercedes-Benz’s service specs for 300CD battery cold cranking amps and reserve capacity. Get help figuring out the battery size that matches your vehicle, and schedule a fast car battery replacement at your earliest convenience.

Firestone Has DieHard Batteries for 300CDs

We only want what’s best for your Mercedes-Benz 300CD, which is why we carry just that. You need a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries shatter expectations using state-of-the-art advancements to satisfy the expanding power needs of new vehicles. A DieHard battery isn't an ordinary car battery. It's extraordinary. Buy a DieHard battery for your Mercedes-Benz 300CD and drive with confidence knowing that your battery will perform when you need it. That’s why you should choose batteries from Firestone Complete Auto Care.

Making Your 300CD’s New Battery Last

Have you recently had a fresh battery installed in your Mercedes-Benz 300CD? Congrats! Give your new car battery the best start with proper care. 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 300CD Car Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have battery questions that are Mercedes-Benz 300CD-specific, visit your nearest store. Our expert techs have the answers you need.

Why doesn’t my 300CD 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 a habit of leaving your car doors open and the cabin light at night. Stop in for a free battery check at your favorite Firestone Complete Auto Care to learn more about the state of your battery.
What do you do with my dead 300CD battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
What’s the cost of DieHard batteries for Mercedes-Benz 300CDs? Mercedes-Benz 300CD 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 do car batteries last? 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, crusty buildup on my 300CD’s battery post? If you notice white, crusty stuff around the battery terminals of your 300CD, it's likely corrosion. A chemical reaction between battery acid and the air can create a white, powdery substance that builds up over time on the terminals. This buildup can interfere with the electrical connection between the battery and your 300CD’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.
How do I remove corrosion from my 300CD 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 300CD 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 300CD batteries near me? You can shop for 300CD 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.