Why won’t my 740i battery hold a charge?

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 cabin light at night. Stop in for a free battery check at your favorite Firestone Complete Auto Care and learn more about your battery's charge.

What happens to my old 740i battery?

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

What’s the cost of DieHard batteries for BMW 740is?

Get affordable prices on BMW 740i batteries by using one of our limited-time battery deals. Plus, all DieHard car batteries come with a free replacement warranty and extra coverage with DieHard Assurance.

How long do car batteries 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, crusty buildup on my 740i’s battery post?

The white, flaky stuff that can build up around your 740i’s battery terminals is known as corrosion. Acid leaking from your vehicle’s battery post can have a chemical reaction with the air, leading to an accumulation of the white, powdery substance over time. Corrosion can affect the flow of electricity between your battery and the electrical system in your 740i, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.

How do I clean corrosion off my 740i vehicle 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.

Where can I purchase 740i batteries near me?

You can shop for 740i 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.

Car Batteries for 1999 BMW 740i

Get a New BMW Battery

BMW 740i Batteries Near You

Don’t let a dead battery stop you. Shop replacement car batteries for your 1999 BMW 740i at Firestone Complete Auto Care.

Shop Batteries

Battery Size & Replacement for 1999 BMW 740i

Need more info about BMW 740i batteries? Use this chart to find the right battery size and CCAs for your BMW 740i.

Battery	Engine	Warranty		Cold Cranking Amps
95R/H9	V8/4.4L	Replacement 36 months	Performance months	950
H9-AGM	V8/4.4L	Replacement 36 months	Performance months	950

BATTERIES
V8/4.4L - Battery: 95R/H9 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 950
V8/4.4L - Battery: H9-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 950

Schedule an Appointment

Buy the Right Battery for Your BMW 740i

Sadly, your BMW 740i won't last forever. Neither will its battery. The average car battery lasts 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 slow engine crank, an illuminated check engine light or battery signal, bloated battery case, corroded battery posts, or faded headlights 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. Visit us for a complimentary battery check and, if necessary, a battery replacement to help keep your 1999 BMW 740i running! Automotive batteries are just one of our many areas of expertise. Our technicians are well-acquainted with BMW’s service specs for 740i battery cold cranking amps and reserve capacity. Get help choosing the battery size that fits your car perfectly, and schedule an appointment today for a quick car battery replacement.

Firestone Has DieHard Batteries for 740is

We only want what’s best for your BMW 740i, which is why we carry just that. You need a reliable, durable and powerful battery in even some of the toughest conditions. DieHard 740i batteries surpass expectations using the latest innovative technology to satisfy the growing power requirements of modern vehicles They're no ordinary battery, they're extraordinary. Choose a DieHard battery for your BMW 740i and have the peace of mind that performance will be there when you're counting on it. That’s why you should choose batteries from Firestone Complete Auto Care.

Caring for a New BMW 740i Battery

Did you recently have a new 1999 BMW 740i 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, keeping your battery posts clean, and avoiding radio and electronic component use when the engine is off.

Answers to Your 740i Car Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have a 740i-specific battery question, pay us a visit. Our expert techs have the answers you need.

Why won’t my 740i battery hold a charge? 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 cabin light at night. Stop in for a free battery check at your favorite Firestone Complete Auto Care and learn more about your battery's charge.
What happens to my old 740i battery? We recycle it, taking care of both your car and the Earth.
What’s the cost of DieHard batteries for BMW 740is? Get affordable prices on BMW 740i batteries by using one of our limited-time battery deals. Plus, all DieHard car batteries come with a free replacement warranty and extra coverage with DieHard Assurance.
How long do car batteries 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, crusty buildup on my 740i’s battery post? The white, flaky stuff that can build up around your 740i’s battery terminals is known as corrosion. Acid leaking from your vehicle’s battery post can have a chemical reaction with the air, leading to an accumulation of the white, powdery substance over time. Corrosion can affect the flow of electricity between your battery and the electrical system in your 740i, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.
How do I clean corrosion off my 740i vehicle 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.
Where can I purchase 740i batteries near me? You can shop for 740i 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.