Why won’t my 300D 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 a habit of leaving your car doors open and the lights on overnight. Stop by for a complimentary battery check at your local Firestone Complete Auto Care and get a handle on your car battery’s health.

What happens to my old 300D battery?

We’ll recycle your car battery for you!

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

Mercedes-Benz 300D 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?

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 300D’s battery post?

The white, flaky stuff that can build up around your 300D’s battery terminals is known as corrosion. Acid leaking from your vehicle’s battery post can have a chemical reaction with the air, leading to an accumulation of the white, powdery substance over time. Corrosion can affect the flow of electricity between your battery and the electrical system in your 300D, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.

What do I do about corrosion on my 300D 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 300D owner’s manual for instructions on how to do so.

Where can I find a battery for my 300D?

Your local Firestone Complete Auto Care sells and installs 300D batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

Car Batteries for 1984 Mercedes-Benz 300D

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Mercedes-Benz 300D Batteries Near You

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 1984 Mercedes-Benz 300D today and schedule a quick installation at Firestone Complete Auto Care.

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The Right Battery Size for a 1984 Mercedes-Benz 300D

Need more info about Mercedes-Benz 300D batteries? Use the following chart to find information on Mercedes-Benz 300D 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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Buying a Replacement Battery for Mercedes-Benz 300D

You can pretty much drive your Mercedes-Benz 300D until you don't want to anymore. But your 300D's battery? Don't count on it to last forever. Generally, car batteries last from three to five years. Don’t get stranded by your 300D’s car battery. Replace it regularly instead! 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 terminals, or faded headlights can all signal that your battery needs attention.

Or, you can get a complimentary battery check at your nearest Firestone Complete Auto Care. Our equipment can see how much charge is left in your battery. Visit us for a complimentary battery check and, if needed, get your Mercedes-Benz 300D a replacement battery. Automotive batteries are just one of our many areas of expertise. Our technicians are familiar with Mercedes-Benz-specific recommendations for 300D car batteries’ reserve capacities and cold cranking amps. Get help identifying the type and size of battery that fits your car perfectly, and schedule a weekday or weekend battery replacement service for your car.

Why Choose a DieHard Battery for Your 300D?

We only want what’s best for your Mercedes-Benz 300D, which is why we only carry top-of-the-line replacement parts and batteries. Your 300D needs a reliable, durable and powerful battery in even some of the toughest conditions. DieHard 300D batteries surpass expectations using state-of-the-art advancements to fuel the growing power requirements of modern vehicles A DieHard battery isn't an ordinary car battery. It's extraordinary. Choose a DieHard battery for your Mercedes-Benz 300D and drive with confidence knowing that your battery will perform when you need it. That's the kind of battery we deliver.

After Buying 1984 Mercedes-Benz 300D Battery

Have you recently had a fresh battery installed in your Mercedes-Benz 300D? Congrats! You can give your new battery a head start with proper care and attention. Give your new battery a hand by limiting short trips, keeping your battery posts clean, and not using electronics such as the radio and power outlets when the engine is off.