Why doesn’t my 735i battery stay charged?

A battery that won't hold a charge is almost as good as dead. It may be getting old. Or, you may have a habit of leaving your car doors open and the dome lights on during the night. Stop by for a free battery test at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.

What do you do with my old 735i battery?

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

What’s the cost of DieHard batteries for BMW 735is?

BMW 735i 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 do car batteries last?

Car battery lifespan varies depending on a few factors, including driving conditions, accessories, how well it’s maintained, and the type of battery. On average, a car battery lasts about three to five years.

What is the white, crusty substance accumulating on my 735i’s battery post?

The white, flaky stuff that can build up around your 735i’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 735i, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.

What do I do about corrosion on my 735i car battery?

Regularly inspecting and cleaning your battery terminals will help keep your 735i’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 find a battery for my 735i?

At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install 735i batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.

1986 BMW 735i Batteries

Get a New BMW Battery

Get a New BMW 735i Battery

Don’t let a dead battery stop you. Shop replacement car batteries for your 1986 BMW 735i at Firestone Complete Auto Care.

Shop Batteries

1986 BMW 735i Battery Replacement & Size

Need more info about BMW 735i batteries? Use this chart to find the right battery size and CCAs for your BMW 735i.

Battery	Engine	Warranty		Cold Cranking Amps
91-1	L6/3.5L	Replacement 24 months	Performance months	615
48H6	L6/3.5L	Replacement 36 months	Performance months	730
H6-AGM	L6/3.5L	Replacement 36 months	Performance months	760

BATTERIES
L6/3.5L - Battery: 91-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 615
L6/3.5L - Battery: 48H6 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 730
L6/3.5L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760

Schedule an Appointment

Buying a Replacement Battery for BMW 735i

Sadly, your BMW 735i won't last forever. Neither will its battery. 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 BMW 735i stranded. Look out for symptoms of a faulty car battery. A slow engine crank, an illuminated battery or check engine light, swollen battery case, corroded battery 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. Our equipment can see how much charge is left in your battery. Stop by for a free battery test and, if needed, get your BMW 735i a replacement battery. Car batteries are one of our many specialties! Our expert technicians understand BMW service recommendations for 735i car batteries’ reserve capacities and cold cranking amps. Get help identifying the type and size of battery that fits your car perfectly, and schedule a fast car battery replacement at your earliest convenience.

Is There a DieHard Battery for 735is?

We know what’s best for your BMW 735i, which is why we only carry top-of-the-line replacement parts and batteries. Your 735i needs a reliable, durable and powerful battery that can handle most extreme environments and weather conditions. DieHard 735i batteries surpass expectations using the latest innovative technology to fuel the expanding power needs of new vehicles and their accessories. A DieHard battery isn't an ordinary car battery. It's extraordinary. Choose a DieHard battery for your BMW 735i and have the peace of mind that performance will be there when you're counting on it. That's the kind of battery we deliver.

After Buying 1986 BMW 735i Battery

Have you recently had a fresh battery installed in your BMW 735i? Congrats! Give your new car battery the best start with proper care. Give your new battery a hand by decreasing the number of short trips you take, keeping your battery posts clean, and avoiding radio and electronic component use when the engine is off.

Commonly Asked 735i Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a 735i-specific battery question, visit your nearest store. Our technicians have the answers.

Why doesn’t my 735i battery stay charged? A battery that won't hold a charge is almost as good as dead. It may be getting old. Or, you may have a habit of leaving your car doors open and the dome lights on during the night. Stop by for a free battery test at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.
What do you do with my old 735i battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
What’s the cost of DieHard batteries for BMW 735is? BMW 735i 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 do car batteries last? Car battery lifespan varies depending on a few factors, including driving conditions, accessories, how well it’s maintained, and the type of battery. On average, a car battery lasts about three to five years.
What is the white, crusty substance accumulating on my 735i’s battery post? The white, flaky stuff that can build up around your 735i’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 735i, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.
What do I do about corrosion on my 735i car battery? Regularly inspecting and cleaning your battery terminals will help keep your 735i’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 find a battery for my 735i? At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install 735i batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.