Why won't my 840i Gran Coupe 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 dome lights on during the night. Stop by for a free battery test at your local Firestone Complete Auto Care and learn more about your battery's charge.

What do you do with my dead 840i Gran Coupe battery?

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

What’s the cost of DieHard batteries for BMW 840i Gran Coupes?

You can find affordable 840i Gran Coupe 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?

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

What is the white, crusty substance accumulating on my 840i Gran Coupe’s battery post?

The white, crusty stuff that can accumulate around 840i Gran Coupe 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.

What do I do about corrosion on my 840i Gran Coupe car battery?

Regularly inspect the terminals and clean them with a mixture of baking soda and water, a wire brush, and a rag. Disconnect the battery cables before cleaning to help avoid the risk of electrical shock. Always reference and follow the instructions in your vehicle owner’s manual prior to disconnecting the battery cables.

Who carries 840i Gran Coupe batteries near me?

When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install 840i Gran Coupe batteries at our stores nationwide — and our Firestone Direct mobile vans can provide convenient on-site battery services. Learn more about our mobile battery services and book an appointment.

Car Batteries for 2020 BMW 840i Gran Coupe

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Get a Battery for Your BMW 840i Gran Coupe

Don’t let a dead battery stop you. Shop replacement car batteries for your 2020 BMW 840i Gran Coupe at Firestone Complete Auto Care.

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Battery Size & Replacement for 2020 BMW 840i Gran Coupe

Need more info about BMW 840i Gran Coupe batteries? Use the following chart to find information on BMW 840i Gran Coupe battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
H8-AGM	L6/3.0L	Replacement 36 months	Performance months	900

BATTERIES
L6/3.0L - Battery: H8-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 900

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Buy the Right Battery for Your BMW 840i Gran Coupe

You can pretty much drive your BMW 840i Gran Coupe until you don't want to anymore. But your 840i Gran Coupe's battery? Don't count on it to last forever. On average, auto batteries last anywhere from three to five years. You want to replace your 2020 BMW 840i Gran Coupe battery before it fails and leaves you stranded. Look out for symptoms of a faulty car battery. A slow engine crank, a blinking battery or check engine light, swollen battery case, corroded battery posts, or dim headlights may all indicate that your battery needs attention.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. 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 2020 BMW 840i Gran Coupe. Automotive batteries are just one of our many areas of expertise. Our technicians are well-acquainted with BMW’s service specs for 840i Gran Coupe car batteries’ reserve capacities and cold cranking amps. Get help identifying the type and size of battery that matches your vehicle, and schedule an appointment today for a quick car battery replacement.

Firestone Has DieHard Batteries for 840i Gran Coupes

We only want what’s best for your BMW 840i Gran Coupe, which is why we carry just that. You need a reliable, durable and powerful battery in extremely hot and cold environments. DieHard batteries go above and beyond using the latest innovative technology to meet the expanding power demands of new vehicles. A DieHard battery isn't an ordinary car battery. It's extraordinary. Choose a DieHard battery for your BMW 840i Gran Coupe and get behind the wheel with confidence. Why? Because your battery will perform when you need it. That's the kind of battery we deliver.

Making Your 840i Gran Coupe’s New Battery Last

Have you recently had a fresh battery installed in your BMW 840i Gran Coupe? Good thinking! Give your new car battery the best start with proper care. Give your new battery a hand by limiting short trips, cleaning your battery posts, and avoiding radio and electronic component use when the engine is off.

Commonly Asked 840i Gran Coupe Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have battery questions that are BMW 840i Gran Coupe-specific, visit your nearest store. Our expert techs have the answers you need.

Why won't my 840i Gran Coupe 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 dome lights on during the night. Stop by for a free battery test at your local Firestone Complete Auto Care and learn more about your battery's charge.
What do you do with my dead 840i Gran Coupe battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
What’s the cost of DieHard batteries for BMW 840i Gran Coupes? You can find affordable 840i Gran Coupe 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? A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.
What is the white, crusty substance accumulating on my 840i Gran Coupe’s battery post? The white, crusty stuff that can accumulate around 840i Gran Coupe 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.
What do I do about corrosion on my 840i Gran Coupe car battery? Regularly inspect the terminals and clean them with a mixture of baking soda and water, a wire brush, and a rag. Disconnect the battery cables before cleaning to help avoid the risk of electrical shock. Always reference and follow the instructions in your vehicle owner’s manual prior to disconnecting the battery cables.
Who carries 840i Gran Coupe batteries near me? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install 840i Gran Coupe batteries at our stores nationwide — and our Firestone Direct mobile vans can provide convenient on-site battery services. Learn more about our mobile battery services and book an appointment.