Why won’t my Mighty Max battery hold a charge?

A battery is in its final hour when it will no longer hold a charge. The battery may be too old. Or, you’ve been leaving the doors slightly open and the lights on overnight. Stop by for a free battery test at your nearest Firestone Complete Auto Care to learn more about the state of your battery.

What do you do with my dead Mighty Max battery?

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

How much do DieHard batteries cost for your Mitsubishi Mighty Max?

Mitsubishi Mighty Max 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, crusty buildup on my Mighty Max’s battery post?

The white, crusty stuff that can accumulate around Mighty Max 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 corrosion off my Mighty Max vehicle 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 find a battery for my Mighty Max?

You can shop for Mighty Max 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.

Car Batteries for 1984 Mitsubishi Mighty Max

Get a New Mitsubishi Battery

Get a New Mitsubishi Mighty Max Battery

Don’t let a dead battery stop you. Shop replacement car batteries for your 1984 Mitsubishi Mighty Max at Firestone Complete Auto Care.

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The Right Battery Size for a 1984 Mitsubishi Mighty Max

Researching battery replacements for your Mitsubishi Mighty Max? Use this chart to find the right battery size and CCAs for your Mitsubishi Mighty Max.

Battery	Engine	Warranty		Cold Cranking Amps
51-2	L4/2.3L	Replacement 24 months	Performance months	500
27-3	L4/2.0L	Replacement 24 months	Performance months	810
51-2	L4/2.6L	Replacement 24 months	Performance months	500

BATTERIES
L4/2.3L - Battery: 51-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 500
L4/2.0L - Battery: 27-3 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 810
L4/2.6L - Battery: 51-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 500

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Buy the Right Battery for Your Mitsubishi Mighty Max

Sadly, your Mitsubishi Mighty Max won't last forever. Neither will its battery. 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 Mitsubishi Mighty Max stranded. Pay attention to clues that your battery is on its way out. A lagging starter, an illuminated battery or check engine light, bloated battery case, corroded battery posts, or dim headlights can all be signs that your battery is on its last leg.

Or, you can get a complimentary battery check at your nearest Firestone Complete Auto Care. With best-in-class tools we can tell you how much "life" is left in your battery. Stop by for a free battery test and, if needed, get your Mitsubishi Mighty Max a replacement battery. Car batteries are only one of our many strong suits. Our technicians are well-acquainted with Mitsubishi’s service specs for Mighty Max battery cold cranking amps and reserve capacity. Get help choosing the battery size that's best for your Mighty Max, and schedule a fast car battery replacement at your earliest convenience.

Firestone Has DieHard Batteries for Mighty Maxs

We know what’s best for your Mitsubishi Mighty Max, which is why we exclusively carry the best. Your Mighty Max needs a reliable, durable and powerful battery that can handle most extreme environments and weather conditions. DieHard batteries go above and beyond using state-of-the-art advancements to fuel the increasing power requirements of new vehicles. They're no ordinary battery, they're extraordinary. Choose a DieHard battery for your Mitsubishi Mighty Max and drive with confidence knowing that your battery will perform when you need it. That's the kind of battery we deliver.

After Buying 1984 Mitsubishi Mighty Max Battery

Got a new car battery installed in your 1984 Mitsubishi Mighty Max? Good thinking! 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, limiting short trips, cleaning your battery posts, and not using electronics such as the radio and power outlets when the engine is off.

Answers to Your Mighty Max Car Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have a Mighty Max-specific battery question, visit your nearest store. Our technicians have the answers.

Why won’t my Mighty Max battery hold a charge? A battery is in its final hour when it will no longer hold a charge. The battery may be too old. Or, you’ve been leaving the doors slightly open and the lights on overnight. Stop by for a free battery test at your nearest Firestone Complete Auto Care to learn more about the state of your battery.
What do you do with my dead Mighty Max battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
How much do DieHard batteries cost for your Mitsubishi Mighty Max? Mitsubishi Mighty Max 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, crusty buildup on my Mighty Max’s battery post? The white, crusty stuff that can accumulate around Mighty Max 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 corrosion off my Mighty Max vehicle 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 find a battery for my Mighty Max? You can shop for Mighty Max 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.