Why won't my 350SDL battery stay charged?

A car battery that needs to be jump-started every time is as good as dead. The battery may be too old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop by for a complimentary battery check at your nearest Firestone Complete Auto Care and learn more about your battery's charge.

What happens to my old 350SDL battery?

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

How much will replacing my Mercedes-Benz 350SDL’s battery cost if I get a DieHard battery?

You can find affordable 350SDL 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.

What is the average lifespan of a car battery?

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 350SDL’s battery post?

If you notice white, crusty stuff around the battery terminals of your 350SDL, 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 350SDL’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.

How do I remove corrosion from my 350SDL car battery?

Regularly inspecting and cleaning your battery terminals will help keep your 350SDL’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.

Where can I purchase 350SDL batteries near me?

You can shop for 350SDL 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.

1991 Mercedes-Benz 350SDL Car Batteries

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Get a Battery for Your Mercedes-Benz 350SDL

Don’t let a dead battery stop you. Shop replacement car batteries for your 1991 Mercedes-Benz 350SDL at Firestone Complete Auto Care.

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The Right Battery Size for a 1991 Mercedes-Benz 350SDL

Researching battery replacements for your Mercedes-Benz 350SDL? Use the following chart to find information on Mercedes-Benz 350SDL battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
93-1	L6/3.4L	Replacement 24 months	Performance months	825
49H8	L6/3.4L	Replacement 36 months	Performance months	900
H8-AGM	L6/3.4L	Replacement 36 months	Performance months	900

BATTERIES
L6/3.4L - Battery: 93-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 825
L6/3.4L - Battery: 49H8 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 900
L6/3.4L - Battery: H8-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 900

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Buying a Replacement Battery for Mercedes-Benz 350SDL

Sadly, your Mercedes-Benz 350SDL won't last forever. Neither will its battery. On average, auto batteries last anywhere from three to five years. Don’t get stranded by your 350SDL’s car battery. Replace it regularly instead! Pay attention to clues that your battery is on its way out. A slow engine crank, an illuminated battery or check engine light, swollen battery case, corrosion-covered posts, and subpar electrical performance can all be signs that your battery is waving goodbye.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. With best-in-class tools we can tell you how much "life" is left in your battery. Drop in for a free battery check and, if needed, a replacement battery for your 1991 Mercedes-Benz 350SDL. Automotive batteries are just one of our many areas of expertise. Our expert technicians understand Mercedes-Benz service recommendations for 350SDL battery cold cranking amps and reserve capacity. Get help choosing the battery size that fits your car perfectly, and schedule a fast car battery replacement at your earliest convenience.

Firestone Has DieHard Batteries for 350SDLs

Your Mercedes-Benz 350SDL deserves the best, which is why we only carry top-of-the-line replacement parts and batteries. Your 350SDL needs a reliable, durable and powerful battery that can handle most extreme environments and weather conditions. DieHard batteries shatter expectations using the latest innovative technology to fuel the expanding power needs of new vehicles and their accessories. A DieHard battery isn't an ordinary car battery. It's extraordinary. Choose a DieHard battery for your Mercedes-Benz 350SDL and get behind the wheel with confidence. Why? Because your battery will perform when you need it. That’s why you should choose batteries from Firestone Complete Auto Care.

Making Your 350SDL’s New Battery Last

Did you recently have a new 1991 Mercedes-Benz 350SDL car battery installed? Congrats! 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, cutting back on unnecessary short trips, cleaning your battery posts, and not using electronics such as the radio and power outlets when the engine is off.