Car Batteries for 1986 BMW 635CSi

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Get a Battery for Your BMW 635CSi

Don’t let a dead battery stop you. Shop replacement car batteries for your 1986 BMW 635CSi at Firestone Complete Auto Care.

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1986 BMW 635CSi Battery Replacement & Size

Researching battery replacements for your BMW 635CSi? Use this chart to find the right battery size and CCAs for your BMW 635CSi.

Battery Engine Warranty Cold Cranking Amps
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: 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

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Buy the Right Battery for Your BMW 635CSi

You can pretty much drive your BMW 635CSi until you don't want to anymore. But your 635CSi's battery? Don't count on it to last forever. Generally, car batteries last from three to five years. You want to replace your 1986 BMW 635CSi battery before it fails and leaves you stranded. Watch for signs that your current battery is getting too old or too weak. A sluggish engine start, an illuminated check engine light or battery signal, swollen battery case, corroded battery terminals, 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 computerized testing we can see how much charge is left in your battery. Visit us for a complimentary battery check and, if needed, a replacement battery for your 1986 BMW 635CSi. Car batteries are only one of our many strong suits. Our technicians are well-acquainted with BMW’s service specs for 635CSi battery CCAs and reserve capacity. Get help identifying the type and size of battery that's best for your 635CSi, and schedule a weekday or weekend battery replacement service for your car.

Why Choose a DieHard Battery for Your 635CSi?

We know what’s best for your BMW 635CSi, which is why we carry just that. You need a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries shatter expectations using state-of-the-art advancements to meet the expanding power requirements of modern vehicles They're no ordinary battery, they're extraordinary. Choose a DieHard battery for your BMW 635CSi 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 1986 BMW 635CSi Battery

Got a new car battery installed in your 1986 BMW 635CSi? Congrats! Give your new car battery the best start with proper care. turning off all of the lights when you leave your vehicle, decreasing the number of short trips you take, keeping the battery posts corrosion-free, and not using electronics such as the radio and power outlets when the engine is off.

Top 635CSi Car Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a 635CSi-specific battery question, visit your nearest store. Our expert techs have the answers you need.

  • Why doesn’t my 635CSi 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 in for a free battery check at your nearest Firestone Complete Auto Care and learn more about your battery's charge.
  • What do you do with my old 635CSi battery? We’ll recycle your car battery for you!
  • What’s the cost of DieHard batteries for BMW 635CSis? BMW 635CSi 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? 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.
  • Why is there white, crusty buildup on my 635CSi’s battery post? The white, flaky stuff that can build up around your 635CSi’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 635CSi, 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 a corroded 635CSi battery terminal? 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 635CSi batteries near me? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install 635CSi 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.