Why won't my 740i battery stay charged?

A battery that won't hold a charge is almost as good as dead. The battery may be too old. Or, you may have a habit of leaving your car doors open and the cabin light at night. Stop by for a complimentary battery check at your nearest Firestone Complete Auto Care and learn more about your battery's charge.

What do you do with my old 740i battery?

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

How much will replacing my BMW 740i’s battery cost if I get a DieHard battery?

BMW 740i 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.

What is the white, crusty stuff around my 740i’s battery post?

If you notice white, crusty stuff around the battery terminals of your 740i, 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 740i’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.

How do I remove corrosion from my 740i 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 740i owner’s manual for instructions on how to do so.

Where can I purchase 740i batteries near me?

Your local Firestone Complete Auto Care sells and installs 740i batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

2018 BMW 740i Car Batteries

Get a New BMW Battery

Get a Battery for Your BMW 740i

Don’t let a dead battery stop you. Shop replacement car batteries for your 2018 BMW 740i at Firestone Complete Auto Care.

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Battery Size & Replacement for 2018 BMW 740i

Researching battery replacements for your BMW 740i? Check the chart to find the right car battery size and cold cranking amps for your 740i.

Battery	Engine	Warranty		Cold Cranking Amps
95R/H9	L6/3.0L	Replacement 36 months	Performance months	950
H5-AGM	L6/3.0L	Replacement 36 months	Performance months	680

BATTERIES
L6/3.0L - Battery: 95R/H9 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 950
L6/3.0L - Battery: H5-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 680

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Shopping for BMW 740i Car Batteries

Sadly, your BMW 740i 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 740i’s car battery. Replace it regularly instead! Watch for signs that your current battery is getting too old or too weak. A sluggish engine start, an illuminated battery or check engine light, bloated battery case, corrosion-covered posts, and subpar electrical performance may all indicate that your battery needs attention.

Or, you can get a complimentary battery check at your nearest 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 BMW 740i a replacement battery. Car batteries are one of our many specialties! Our expert technicians understand BMW service recommendations for 740i 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.

Find the Right DieHard Battery for Your 740i

We know what’s best for your BMW 740i, which is why we only carry top-of-the-line replacement parts and batteries. Your vehicle needs a reliable, durable and powerful battery in extremely hot and cold environments. DieHard batteries shatter expectations using the latest innovative technology to satisfy the expanding power demands of new vehicles and their accessories. They're no ordinary battery, they're extraordinary. Choose a DieHard battery for your BMW 740i and get behind the wheel with confidence. Why? Because performance will be there when you're counting on it. That’s why you should choose batteries from Firestone Complete Auto Care.

After Buying 2018 BMW 740i Battery

Have you recently had a fresh battery installed in your BMW 740i? Great job! 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.