Why doesn’t my 300SD battery stay charged?

A battery is in its final hour when it will no longer hold a charge. It may be getting old. Or, you’ve been leaving the doors slightly open and the lights on overnight. 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 do you do with my old 300SD battery?

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

How much do DieHard batteries cost for your Mercedes-Benz 300SD?

You can find affordable 300SD 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.

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.

What is the white, crusty substance accumulating on my 300SD’s battery post?

If you notice white, crusty stuff around the battery terminals of your 300SD, 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 300SD’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.

How do I remove corrosion from my 300SD car battery?

Regularly inspecting and cleaning your battery terminals will help keep your 300SD’s electrical system running smoothly. Before cleaning, reference your owner’s manual for instructions on how to disconnect the battery cables. Once the cables have been disconnected, gently clean the terminals with a mixture of water and baking soda, a wire brush, and a rag.

Who sells 300SD batteries near me?

At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install 300SD batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.

1984 Mercedes-Benz 300SD Batteries

Get a New Mercedes-Benz Battery

Mercedes-Benz 300SD Batteries Near You

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

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Battery Size & Replacement for 1984 Mercedes-Benz 300SD

Need more info about Mercedes-Benz 300SD batteries? Use this chart to find the right battery size and CCAs for your Mercedes-Benz 300SD.

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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Shopping for Mercedes-Benz 300SD Car Batteries

Your 300SD doesn't have an expiration date, but its battery does. Generally, car batteries last from three to five years. Don’t get stranded by your 300SD’s car battery. Replace it regularly instead! Watch for signs that your current battery is getting too old or too weak. A lagging starter, an illuminated check engine light or battery signal, bloated battery case, corrosion-covered posts, or dim headlights can all signal that your battery needs attention.

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 1984 Mercedes-Benz 300SD running! Car batteries are only one of our many strong suits. Our expert technicians understand Mercedes-Benz service recommendations for 300SD car batteries’ reserve capacities and cold cranking amps. Get help figuring out the battery size that's best for your 300SD, and schedule a fast car battery replacement at your earliest convenience.

Find the Right DieHard Battery for Your 300SD

Your Mercedes-Benz 300SD deserves the best, which is why we exclusively carry the best. Your vehicle needs 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 meet the expanding power demands of new vehicles and their accessories. They're no ordinary battery, they're extraordinary. Buy a DieHard battery for your Mercedes-Benz 300SD 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 300SD’s New Battery Last

Got a new car battery installed in your 1984 Mercedes-Benz 300SD? Great job! 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 your battery posts clean, and avoiding radio and electronic component use when the engine is off.

Answers to Your 300SD Car 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 300SD battery, visit your nearest store. Our technicians are happy to help.

Why doesn’t my 300SD battery stay charged? A battery is in its final hour when it will no longer hold a charge. It may be getting old. Or, you’ve been leaving the doors slightly open and the lights on overnight. 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 do you do with my old 300SD battery? We recycle it, taking care of both your car and the Earth.
How much do DieHard batteries cost for your Mercedes-Benz 300SD? You can find affordable 300SD 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.
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.
What is the white, crusty substance accumulating on my 300SD’s battery post? If you notice white, crusty stuff around the battery terminals of your 300SD, 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 300SD’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.
How do I remove corrosion from my 300SD car battery? Regularly inspecting and cleaning your battery terminals will help keep your 300SD’s electrical system running smoothly. Before cleaning, reference your owner’s manual for instructions on how to disconnect the battery cables. Once the cables have been disconnected, gently clean the terminals with a mixture of water and baking soda, a wire brush, and a rag.
Who sells 300SD batteries near me? At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install 300SD batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.