Why won't my CX-30 battery stay charged?

A battery that won't hold a charge is almost as good as dead. The battery may be too old. Or, you may have a habit of leaving your car doors open and the lights on overnight. Stop by for a complimentary battery check at your nearest Firestone Complete Auto Care and get a handle on your car battery’s health.

What do you do with my old CX-30 battery?

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

How much will replacing my Mazda CX-30’s battery cost if I get a DieHard battery?

You can find affordable CX-30 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 can I expect my car battery to last?

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.

What is the white, crusty substance accumulating on my CX-30’s battery post?

The white, crusty stuff that can accumulate around CX-30 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 clean a corroded CX-30 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 CX-30 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 CX-30?

You can shop for CX-30 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.

2021 Mazda CX-30 Batteries

Get a New Mazda Battery

Get a New Mazda CX-30 Battery

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 2021 Mazda CX-30 today and schedule a quick installation at Firestone Complete Auto Care.

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The Right Battery Size for a 2021 Mazda CX-30

Researching battery replacements for your Mazda CX-30? Use the following chart to find information on Mazda CX-30 battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
47H5	L4/2.0L	Replacement 36 months	Performance months	650
H5-AGM	L4/2.0L	Replacement 36 months	Performance months	680
47H5	L4/2.5L	Replacement 36 months	Performance months	650
H5-AGM	L4/2.5L	Replacement 36 months	Performance months	680

BATTERIES
L4/2.0L - Battery: 47H5 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 650
L4/2.0L - Battery: H5-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 680
L4/2.5L - Battery: 47H5 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 650
L4/2.5L - Battery: H5-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 680

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Shopping for Mazda CX-30 Car Batteries

You can pretty much drive your Mazda CX-30 until you don't want to anymore. But your CX-30's battery? Don't count on it to last forever. Generally, car batteries last from three to five years. You want to replace your 2021 Mazda CX-30 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 battery or check engine light, swollen battery case, corroded battery terminals, and subpar electrical performance can all signal that your battery is on its last leg.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. With computerized testing we can see how much charge is left in your battery. Stop by for a free battery test and, if needed, a replacement battery for your 2021 Mazda CX-30. Car batteries are one of our many specialties! Our expert technicians understand Mazda service recommendations for CX-30 car batteries’ reserve capacities and cold cranking amps. 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 CX-30s

We know what’s best for your Mazda CX-30, which is why we only carry top-of-the-line replacement parts and batteries. Your vehicle needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries go above and beyond and house the latest technology to satisfy the expanding power demands of new vehicles and their accessories. Don't call a DieHard battery ordinary. It's an extraordinary battery. Go with a DieHard battery for your CX-30 and have the peace of mind that performance will be there when you need it most. That's the kind of battery we deliver.

Making Your CX-30’s New Battery Last

Did you recently have a new 2021 Mazda CX-30 car battery installed? Great job! Now, help it last longer and stay charged by caring for it from the get-go. 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.

Answers to Your CX-30 Car Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have battery questions that are Mazda CX-30-specific, stop by your nearest store. Our technicians are happy to help.

Why won't my CX-30 battery stay charged? A battery that won't hold a charge is almost as good as dead. The battery may be too old. Or, you may have a habit of leaving your car doors open and the lights on overnight. Stop by for a complimentary battery check at your nearest Firestone Complete Auto Care and get a handle on your car battery’s health.
What do you do with my old CX-30 battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
How much will replacing my Mazda CX-30’s battery cost if I get a DieHard battery? You can find affordable CX-30 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 can I expect my car battery to last? 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.
What is the white, crusty substance accumulating on my CX-30’s battery post? The white, crusty stuff that can accumulate around CX-30 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 clean a corroded CX-30 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 CX-30 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 CX-30? You can shop for CX-30 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.