Why won't my 135i battery stay charged?

A battery is in its final hour when it will no longer hold a charge. It may be getting old. Or, you’ve been leaving the doors slightly open and the cabin light at night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.

What do you do with my old 135i battery?

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

How much will replacing my BMW 135i’s battery cost if I get a DieHard battery?

You can find affordable 135i 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 135i’s battery post?

If you notice white, crusty stuff around the battery terminals of your 135i, 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 135i’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.

What do I do about corrosion on my 135i car battery?

Regularly inspecting and cleaning your battery terminals will help keep your 135i’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 135i?

You can shop for 135i 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 2009 BMW 135i

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BMW 135i Batteries Near You

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 2009 BMW 135i today and schedule a quick installation at Firestone Complete Auto Care.

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2009 BMW 135i Battery Replacement & Size

Need more info about BMW 135i batteries? Use this chart to find the right battery size and CCAs for your BMW 135i.

Battery	Engine	Warranty		Cold Cranking Amps
93-1	L6/3.0L	Replacement 24 months	Performance months	825
49H8	L6/3.0L	Replacement 36 months	Performance months	900
H6-AGM	L6/3.0L	Replacement 36 months	Performance months	760

BATTERIES
L6/3.0L - Battery: 93-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 825
L6/3.0L - Battery: 49H8 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 900
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 BMW 135i

You can pretty much drive your BMW 135i until you don't want to anymore. But your 135i'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 BMW 135i stranded. Watch for signs that your current battery is getting too old or too weak. A slow engine crank, a blinking battery or check engine light, bloated battery case, corroded battery terminals, or weak lights can all signal 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. Drop in for a free battery check and, if needed, a replacement battery for your 2009 BMW 135i. Car batteries are only one of our many strong suits. Our expert technicians understand BMW service recommendations for 135i car batteries’ reserve capacities and cold cranking amps. Get help identifying the type and size of battery that's best for your 135i, and schedule a weekday or weekend battery replacement service for your car.

Firestone Has DieHard Batteries for 135is

We only want what’s best for your BMW 135i, which is why we carry just that. You need a reliable, durable and powerful battery in extremely hot and cold environments. DieHard 135i batteries surpass expectations using state-of-the-art advancements to fuel the increasing 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 135i and have the peace of mind that your battery will perform when you need it. That's the kind of battery we deliver.

After Buying 2009 BMW 135i Battery

Have you recently had a fresh battery installed in your BMW 135i? Congrats! Now, help it last longer and stay charged by caring for it from the get-go. turning off all of the lights when you leave your vehicle, limiting short trips, keeping the battery posts corrosion-free, and avoiding radio and electronic component use when the engine is off.

Answers to Your 135i Car Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have battery questions that are BMW 135i-specific, stop by your nearest store. Our expert techs have the answers you need.

Why won't my 135i battery stay charged? A battery is in its final hour when it will no longer hold a charge. It may be getting old. Or, you’ve been leaving the doors slightly open and the cabin light at night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.
What do you do with my old 135i battery? We recycle it, taking care of both your car and the Earth.
How much will replacing my BMW 135i’s battery cost if I get a DieHard battery? You can find affordable 135i 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 135i’s battery post? If you notice white, crusty stuff around the battery terminals of your 135i, 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 135i’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.
What do I do about corrosion on my 135i car battery? Regularly inspecting and cleaning your battery terminals will help keep your 135i’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 135i? You can shop for 135i 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.