Why doesn’t my 300E battery stay charged?

A battery is in its final hour when it will no longer hold a charge. The battery may be too old. Or, you may have been leaving your car doors ajar and the lights on overnight. Stop by for a complimentary battery check at your local Firestone Complete Auto Care to learn more about the state of your battery.

What do you do with my dead 300E battery?

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

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

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 can I expect my car battery to last?

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 remove corrosion from my 300E car battery?

Regularly inspecting and cleaning your battery terminals will help keep your 300E’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 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 1990 Mercedes-Benz 300E

Get a New Mercedes-Benz Battery

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 1990 Mercedes-Benz 300E today and schedule a quick installation at Firestone Complete Auto Care.

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The Right Battery Size for a 1990 Mercedes-Benz 300E

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	L6/2.6L	Replacement 24 months	Performance months	615
48H6	L6/2.6L	Replacement 36 months	Performance months	730
H6-AGM	L6/2.6L	Replacement 36 months	Performance months	760
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
L6/2.6L - Battery: 91-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 615
L6/2.6L - Battery: 48H6 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 730
L6/2.6L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760
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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Buy the Right Battery for Your 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 lagging starter, a blinking battery or check engine light, swollen battery case, corrosion-covered posts, or faded headlights can all be signs that your battery is on its last leg.

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, get your Mercedes-Benz 300E a replacement battery. Car batteries are only one of our many strong suits. Our technicians are well-acquainted with Mercedes-Benz’s service specs for 300E car batteries’ reserve capacities and cold cranking amps. Get help choosing the battery size that matches your vehicle, and schedule an appointment today for a quick car battery replacement.

Firestone Has DieHard Batteries for 300Es

We only want what’s best for your Mercedes-Benz 300E, which is why we exclusively carry the best. You need a reliable, durable and powerful battery in extremely hot and cold environments. DieHard 300E batteries surpass expectations using the latest innovative technology to satisfy the expanding power needs of new vehicles and their accessories. Don't call a DieHard battery ordinary. It's an extraordinary battery. Choose a DieHard battery for your Mercedes-Benz 300E 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.

After Buying 1990 Mercedes-Benz 300E Battery

Got a new car battery installed in your 1990 Mercedes-Benz 300E? Good thinking! Give your new car battery the best start with proper care. ensuring all the lights are turned off before you leave the car, cutting back on unnecessary short trips, keeping the battery posts corrosion-free, and not using electronics such as the radio and power outlets when the engine is off.

Answers to Your 300E Car Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have a 300E-specific battery question, pay us a visit. Our technicians are happy to help.

Why doesn’t my 300E battery stay charged? A battery is in its final hour when it will no longer hold a charge. The battery may be too old. Or, you may have been leaving your car doors ajar and the lights on overnight. Stop by for a complimentary battery check at your local Firestone Complete Auto Care to learn more about the state of your battery.
What do you do with my dead 300E battery? We recycle it, taking care of both your car and the Earth.
What’s the cost of DieHard batteries for Mercedes-Benz 300Es? 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 can I expect my car battery to last? 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 remove corrosion from my 300E car battery? Regularly inspecting and cleaning your battery terminals will help keep your 300E’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 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.