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

A car battery that needs to be jump-started every time is as good as dead. The battery might be old. Or, you may have been leaving your car doors ajar and the dome lights on during the night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care and learn more about your battery's charge.

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

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

How much do DieHard batteries cost for your Mazda RX-7?

Mazda RX-7 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 often should I replace my car battery?

The typical 12-volt car battery may last three to five years, depending on the type of battery, the driving conditions, and how well the battery is maintained.

Why is there white, flaky stuff around 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.

How do I remove corrosion from my RX-7 car battery?

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.

Where can I purchase RX-7 batteries near me?

When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install RX-7 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.

1985 Mazda RX-7 Batteries

Get a New Mazda Battery

Mazda RX-7 Batteries Near You

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 1985 Mazda RX-7 today and schedule a quick installation at Firestone Complete Auto Care.

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The Right Battery Size for a 1985 Mazda RX-7

Researching battery replacements 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	R2/1.1L	Replacement 24 months	Performance months	500
35-2	R2/1.1L	Replacement 36 months	Performance months	640
35-AGM	R2/1.1L	Replacement 36 months	Performance months	650
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
R2/1.1L - Battery: 35-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 500
R2/1.1L - Battery: 35-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 640
R2/1.1L - Battery: 35-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 650
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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Buy the Right Battery for Your Mazda RX-7

Sadly, your Mazda RX-7 won't last forever. Neither will its battery. Generally, car batteries last from three to five years. You want to replace your 1985 Mazda RX-7 battery before it fails and leaves you stranded. Watch for signs that your current battery is getting too old or too weak. A lagging starter, a blinking battery or check engine light, bloated battery case, corroded battery terminals, or faded headlights can all be signs that your battery is waving goodbye.

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. Drop in for a free battery check and, if necessary, a battery replacement to help keep your 1985 Mazda RX-7 running! Car batteries are only one of our many strong suits. Our technicians are well-acquainted with Mazda’s service specs for RX-7 battery cold cranking amps and reserve capacity. Get help choosing the battery size that fits your car perfectly, and schedule a weekday or weekend battery replacement service for your car.

Is There a DieHard Battery for RX-7s?

Your Mazda RX-7 deserves the best, which is why we exclusively carry the best. You need a reliable, durable and powerful battery in extremely hot and cold environments. DieHard RX-7 batteries surpass expectations using the latest innovative technology to meet the growing power requirements of new vehicles. A DieHard battery isn't an ordinary car battery. It's extraordinary. Choose a DieHard battery for your Mazda RX-7 and get behind the wheel with confidence. Why? Because your battery will perform when you need it. That’s why you should choose batteries from Firestone Complete Auto Care.

Making Your RX-7’s New Battery Last

Did you recently have a new 1985 Mazda RX-7 car battery installed? Congrats! Now, help it last longer and stay charged by caring for it from the get-go. ensuring all the lights are turned off before you leave the car, 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.

Commonly Asked RX-7 Battery Questions

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

Why won't my RX-7 battery stay charged? A car battery that needs to be jump-started every time is as good as dead. The battery might be old. Or, you may have been leaving your car doors ajar and the dome lights on during the night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care and learn more about your battery's charge.
What do you do with my old RX-7 battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
How much do DieHard batteries cost for your Mazda RX-7? Mazda RX-7 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 often should I replace my car battery? The typical 12-volt car battery may last three to five years, depending on the type of battery, the driving conditions, and how well the battery is maintained.
Why is there white, flaky stuff around 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.
How do I remove corrosion from my RX-7 car battery? 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.
Where can I purchase RX-7 batteries near me? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install RX-7 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.