Why won't my RX-7 battery stay charged?

A battery that won't hold a charge is almost as good as dead. The battery might be 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 local Firestone Complete Auto Care and learn more about your battery's charge.

What do you do with my dead RX-7 battery?

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

What’s the cost of DieHard batteries for Mazda RX-7s?

You can find affordable RX-7 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.

What is the average lifespan of a car battery?

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 RX-7’s battery post?

The white, crusty stuff that can accumulate around RX-7 car battery terminals is called corrosion. It is caused by a chemical reaction between the battery acid and the air, which creates a white, powdery substance that can build up on the terminals over time. Corrosion can interfere with the flow of electricity between the battery post and the car's electrical system, sometimes leading to poor electrical performance, difficulty starting, and even premature battery failure.

What do I do about corrosion on my RX-7 car battery?

Regularly inspecting and cleaning your battery terminals will help keep your RX-7’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.

Who sells RX-7 batteries near me?

Your local Firestone Complete Auto Care sells and installs RX-7 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

1986 Mazda RX-7 Car Batteries

Get a New Mazda Battery

Get a New Mazda RX-7 Battery

Don’t let a dead battery stop you. Shop replacement car batteries for your 1986 Mazda RX-7 at Firestone Complete Auto Care.

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The Right Battery Size for a 1986 Mazda RX-7

Not sure what battery to get for your Mazda RX-7? Use this chart to find the right battery size and CCAs for your Mazda RX-7.

Battery	Engine	Warranty		Cold Cranking Amps
35-1	R2/1.3L	Replacement 24 months	Performance months	500
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: 35-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 500
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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Shopping for Mazda RX-7 Car Batteries

You can pretty much drive your Mazda RX-7 until you don't want to anymore. But your RX-7's battery? Don't count on it to last forever. 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-7 stranded. Watch for signs that your current battery is getting too old or too weak. A slow engine crank, an illuminated battery or check engine light, swollen battery case, corroded battery posts, or faded headlights may all indicate that your battery is on its last leg.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. With best-in-class tools we can tell you how much "life" is left in your battery. Drop in for a free battery check and, if necessary, a battery replacement to help keep your 1986 Mazda RX-7 running! Automotive batteries are just one of our many areas of expertise. Our expert technicians understand Mazda service recommendations for RX-7 battery cold cranking amps and reserve capacity. Get help figuring out the battery size that matches your vehicle, and schedule an appointment today for a quick car battery replacement.

Firestone Has DieHard Batteries for RX-7s

Your Mazda RX-7 deserves the best, which is why we carry just that. Your vehicle needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries shatter expectations and house the latest technology to fuel the expanding power needs of modern vehicles Don't call a DieHard battery ordinary. It's an extraordinary battery. Buy a DieHard battery for your Mazda RX-7 and get behind the wheel with confidence. Why? Because performance will be there when you need it most. That’s why you should choose batteries from Firestone Complete Auto Care.

After Buying 1986 Mazda RX-7 Battery

Did you recently have a new 1986 Mazda RX-7 car battery installed? Congrats! You can give your new battery a head start with proper care and attention. Help extend your car battery’s life by limiting short trips, keeping the battery posts corrosion-free, and avoiding radio and electronic component use when the engine is off.

Commonly Asked RX-7 Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have battery questions that are Mazda RX-7-specific, visit your nearest store. Our expert techs have the answers you need.

Why won't my RX-7 battery stay charged? A battery that won't hold a charge is almost as good as dead. The battery might be 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 local Firestone Complete Auto Care and learn more about your battery's charge.
What do you do with my dead RX-7 battery? We recycle it, taking care of both your car and the Earth.
What’s the cost of DieHard batteries for Mazda RX-7s? You can find affordable RX-7 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.
What is the average lifespan of a car battery? 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 RX-7’s battery post? The white, crusty stuff that can accumulate around RX-7 car battery terminals is called corrosion. It is caused by a chemical reaction between the battery acid and the air, which creates a white, powdery substance that can build up on the terminals over time. Corrosion can interfere with the flow of electricity between the battery post and the car's electrical system, sometimes leading to poor electrical performance, difficulty starting, and even premature battery failure.
What do I do about corrosion on my RX-7 car battery? Regularly inspecting and cleaning your battery terminals will help keep your RX-7’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.
Who sells RX-7 batteries near me? Your local Firestone Complete Auto Care sells and installs RX-7 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.