Why doesn’t my K20 battery stay charged?

A car battery that needs to be jump-started every time is as good as dead. The battery may be too old. Or, you may have been leaving your car doors ajar and the cabin light at night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care to learn more about the state of your battery.

What do you do with my dead K20 battery?

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

How much do DieHard batteries cost for your Chevrolet K20?

You can find affordable K20 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?

You can usually get three to five years out of your car battery. However, battery type, how well you maintain your battery, and your driving habits can all affect your battery’s lifespan.

Why is there white, flaky stuff around my K20’s battery post?

If you notice white, crusty stuff around the battery terminals of your K20, 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 K20’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.

How do I clean corrosion off my K20 vehicle battery?

Regularly inspecting and cleaning your battery terminals will help keep your K20’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.

Where can I purchase K20 batteries near me?

You can shop for K20 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 1986 Chevrolet K20

Get a New Chevrolet Battery

Get a Battery for Your Chevrolet K20

Don’t let a dead battery stop you. Shop replacement car batteries for your 1986 Chevrolet K20 at Firestone Complete Auto Care.

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1986 Chevrolet K20 Battery Replacement & Size

Researching battery replacements for your Chevrolet K20? Check the chart to find the right car battery size and cold cranking amps for your K20.

Battery	Engine	Warranty		Cold Cranking Amps
75-2	V8/5.7L	Replacement 24 months	Performance months	650
75FT-3	V8/5.7L	Replacement 36 months	Performance months	700
78-AGM	V8/5.7L	Replacement 36 months	Performance months	740
34/78-4	V8/6.2L	Replacement 24 months	Performance months	800
78FT-2	V8/6.2L	Replacement 36 months	Performance months	800
78-AGM	V8/6.2L	Replacement 36 months	Performance months	740
75-2	L6/4.8L	Replacement 24 months	Performance months	650
78FT-2	L6/4.8L	Replacement 36 months	Performance months	800
78-AGM	L6/4.8L	Replacement 36 months	Performance months	740

BATTERIES
V8/5.7L - Battery: 75-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 650
V8/5.7L - Battery: 75FT-3 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 700
V8/5.7L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740
V8/6.2L - Battery: 34/78-4 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 800
V8/6.2L - Battery: 78FT-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
V8/6.2L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740
L6/4.8L - Battery: 75-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 650
L6/4.8L - Battery: 78FT-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
L6/4.8L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740

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Buy the Right Battery for Your Chevrolet K20

Your K20 doesn't have an expiration date, but its battery does. The average car battery lasts three to five years. Don’t get stranded by your K20’s car battery. Replace it regularly instead! Look out for symptoms of a faulty car battery. A sluggish engine start, an illuminated check engine light or battery signal, bloated battery case, corroded battery terminals, or faded headlights may all indicate that your battery is waving goodbye.

Or, you can get a complimentary battery check at your nearest Firestone Complete Auto Care. Our equipment can see how much charge is left in your battery. Drop in for a free battery check and, if needed, get your Chevrolet K20 a replacement battery. Car batteries are only one of our many strong suits. Our expert technicians understand Chevrolet service recommendations for K20 car batteries’ reserve capacities and cold cranking amps. Get help figuring out the battery size that matches your vehicle, and schedule a fast car battery replacement at your earliest convenience.

Is There a DieHard Battery for K20s?

We know what’s best for your Chevrolet K20, which is why we exclusively carry the best. Your vehicle needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries shatter expectations using the latest innovative technology to satisfy the increasing power needs of modern vehicles A DieHard battery isn't an ordinary car battery. It's extraordinary. Buy a DieHard battery for your Chevrolet K20 and have the peace of mind that performance will be there when you need it most. That’s why you should choose batteries from Firestone Complete Auto Care.

Making Your K20’s New Battery Last

Did you recently have a new 1986 Chevrolet K20 car battery installed? Good thinking! Give your new car battery the best start with proper care. You can take care of your battery by cutting back on unnecessary short trips, keeping your battery posts clean, and not using electronics such as the radio and power outlets when the engine is off.

Commonly Asked K20 Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have battery questions that are Chevrolet K20-specific, stop by your nearest store. Our expert techs have the answers you need.

Why doesn’t my K20 battery stay charged? A car battery that needs to be jump-started every time is as good as dead. The battery may be too old. Or, you may have been leaving your car doors ajar and the cabin light at night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care to learn more about the state of your battery.
What do you do with my dead K20 battery? We recycle it, taking care of both your car and the Earth.
How much do DieHard batteries cost for your Chevrolet K20? You can find affordable K20 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? You can usually get three to five years out of your car battery. However, battery type, how well you maintain your battery, and your driving habits can all affect your battery’s lifespan.
Why is there white, flaky stuff around my K20’s battery post? If you notice white, crusty stuff around the battery terminals of your K20, 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 K20’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.
How do I clean corrosion off my K20 vehicle battery? Regularly inspecting and cleaning your battery terminals will help keep your K20’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.
Where can I purchase K20 batteries near me? You can shop for K20 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.