Why won't my RX-8 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 been leaving your car doors ajar and the cabin light at night. Stop by for a free battery test at your local Firestone Complete Auto Care to learn more about the state of your battery.

What happens to my old RX-8 battery?

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

How much will replacing my Mazda RX-8’s battery cost if I get a DieHard battery?

Mazda RX-8 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 is a car battery good for?

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 stuff around my RX-8’s battery post?

If you notice white, crusty stuff around the battery terminals of your RX-8, 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 RX-8’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.

How do I clean a corroded RX-8 battery terminal?

You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your RX-8 owner's manual to learn how to disconnect the battery cables. After disconnecting the cables, use a mixture of water and baking soda, a wire brush, and a rag to carefully clean the terminals.

Where can I find a battery for my RX-8?

At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install RX-8 batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.

2005 Mazda RX-8 Batteries

Get a New Mazda Battery

Get a Battery for Your Mazda RX-8

Don’t let a dead battery stop you. Shop replacement car batteries for your 2005 Mazda RX-8 at Firestone Complete Auto Care.

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Battery Size & Replacement for 2005 Mazda RX-8

Researching battery replacements for your Mazda RX-8? Check the chart to find the right car battery size and cold cranking amps for your RX-8.

Battery	Engine	Warranty		Cold Cranking Amps
35-2	R2/1.3L	Replacement 36 months	Performance months	640
35-AGM	R2/1.3L	Replacement 36 months	Performance months	650

BATTERIES
R2/1.3L - Battery: 35-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 640
R2/1.3L - Battery: 35-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 650

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Buying a Replacement Battery for Mazda RX-8

Your RX-8 doesn't have an expiration date, but its battery does. On average, auto batteries last anywhere from three to five years. Check your battery regularly and replace it as needed so it doesn’t leave you and your Mazda RX-8 stranded. Pay attention to clues that your battery is on its way out. A lagging starter, a blinking battery or check engine light, swollen battery case, corroded battery posts, and subpar electrical performance can all signal that your battery is on its last leg.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. With computerized testing we can see how much charge is left in your battery. Visit us for a complimentary battery check and, if necessary, a battery replacement to help keep your 2005 Mazda RX-8 running! Car batteries are one of our many specialties! Our technicians are well-acquainted with Mazda’s service specs for RX-8 car batteries’ reserve capacities and cold cranking amps. Get help figuring out the battery size that's best for your RX-8, and schedule an appointment today for a quick car battery replacement.

Is There a DieHard Battery for RX-8s?

We know what’s best for your Mazda RX-8, which is why we exclusively carry the best. Your vehicle needs a reliable, durable and powerful battery in extremely hot and cold environments. DieHard batteries go above and beyond and house the latest technology to meet the growing power demands of new vehicles and their accessories. They're no ordinary battery, they're extraordinary. Go with a DieHard battery for your RX-8 and have the peace of mind that performance will be there when you need it most. That's the kind of battery we deliver.

After Buying 2005 Mazda RX-8 Battery

Got a new car battery installed in your 2005 Mazda RX-8? Good thinking! You can give your new battery a head start with proper care and attention. You can take care of your battery by cutting back on unnecessary short trips, keeping your battery posts clean, and avoiding radio and electronic component use when the engine is off.