Why won’t my 300E battery hold a charge?

A car battery that needs to be jump-started every time is 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 happens to my old 300E battery?

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

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

Mercedes-Benz 300E 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?

A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.

Why is there white, flaky stuff around my 300E’s battery post?

The white, crusty stuff that can accumulate around 300E 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.

How do I clean corrosion off my 300E vehicle 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 300E owner’s manual for instructions on how to do so.

Where can I purchase 300E batteries near me?

Your local Firestone Complete Auto Care sells and installs 300E 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 1989 Mercedes-Benz 300E

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Get a Battery for Your Mercedes-Benz 300E

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 1989 Mercedes-Benz 300E today and schedule a quick installation at Firestone Complete Auto Care.

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1989 Mercedes-Benz 300E Battery Replacement & Size

Researching battery replacements for your Mercedes-Benz 300E? Use the following chart to find information on Mercedes-Benz 300E battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
91-1	L6/3.0L	Replacement 24 months	Performance months	615
48H6	L6/3.0L	Replacement 36 months	Performance months	730
H6-AGM	L6/3.0L	Replacement 36 months	Performance months	760

BATTERIES
L6/3.0L - Battery: 91-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 615
L6/3.0L - Battery: 48H6 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 730
L6/3.0L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760

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Buying a Replacement Battery for Mercedes-Benz 300E

You can pretty much drive your Mercedes-Benz 300E until you don't want to anymore. But your 300E'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 300E stranded. Look out for symptoms of a faulty car battery. A slow engine crank, an illuminated check engine light or battery signal, bloated battery case, corroded battery terminals, or weak lights 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. Stop by for a free battery test and, if needed, a replacement battery for your 1989 Mercedes-Benz 300E. Automotive batteries are just one of our many areas of expertise. Our technicians are familiar with Mercedes-Benz-specific recommendations for 300E car batteries’ reserve capacities and cold cranking amps. Get help figuring out the battery size that fits your car perfectly, and schedule a fast car battery replacement at your earliest convenience.

Why Choose a DieHard Battery for Your 300E?

Your Mercedes-Benz 300E deserves the best, which is why we exclusively carry the best. You need a reliable, durable and powerful battery in extremely hot and cold environments. DieHard batteries go above and beyond and house the latest technology to fuel the increasing power requirements of modern vehicles A DieHard battery isn't an ordinary car battery. It's extraordinary. Buy a DieHard battery for your Mercedes-Benz 300E and drive with confidence knowing that performance will be there when you need it most. That’s why you should choose batteries from Firestone Complete Auto Care.

Caring for a New Mercedes-Benz 300E Battery

Got a new car battery installed in your 1989 Mercedes-Benz 300E? Good thinking! 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, keeping your battery posts clean, and not playing the radio or using other electronics when the engine is turned off.

Commonly Asked 300E Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a battery question that's unique to your Mercedes-Benz 300E battery, visit your nearest store. Our expert techs have the answers you need.

Why won’t my 300E battery hold a charge? A car battery that needs to be jump-started every time is 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 happens to my old 300E battery? We recycle it, taking care of both your car and the Earth.
How much do DieHard batteries cost for your Mercedes-Benz 300E? Mercedes-Benz 300E 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? A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.
Why is there white, flaky stuff around my 300E’s battery post? The white, crusty stuff that can accumulate around 300E 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.
How do I clean corrosion off my 300E vehicle 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 300E owner’s manual for instructions on how to do so.
Where can I purchase 300E batteries near me? Your local Firestone Complete Auto Care sells and installs 300E batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.