Why won't my S4 battery stay charged?

A battery is in its final hour when it will no longer hold a charge. The battery might be old. Or, you may have been leaving your car doors ajar and the lights on overnight. Stop in for a free 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 dead S4 battery?

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

How much do DieHard batteries cost for your Audi S4?

Get affordable prices on Audi S4 batteries by using one of our limited-time battery deals. Plus, all DieHard car batteries come with a free replacement warranty and extra coverage with DieHard Assurance.

How long is a car battery good for?

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 S4’s battery post?

The white, crusty stuff that can accumulate around S4 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 S4 car battery?

Regularly inspecting and cleaning your battery terminals will help keep your S4’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 S4 batteries near me?

At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install S4 batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.

2021 Audi S4 Batteries

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Get a Battery for Your Audi S4

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 2021 Audi S4 today and schedule a quick installation at Firestone Complete Auto Care.

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Battery Size & Replacement for 2021 Audi S4

Not sure what battery to get for your Audi S4? Use the following chart to find information on Audi S4 battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
93-1	V6/3.0L	Replacement 24 months	Performance months	825
95R/H9	V6/3.0L	Replacement 36 months	Performance months	950
H7-AGM	V6/3.0L	Replacement 36 months	Performance months	850

BATTERIES
V6/3.0L - Battery: 93-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 825
V6/3.0L - Battery: 95R/H9 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 950
V6/3.0L - Battery: H7-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850

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Shopping for Audi S4 Car Batteries

Sadly, your Audi S4 won't last forever. Neither will its battery. Generally, car batteries last from three to five years. Don’t get stranded by your S4’s car battery. Replace it regularly instead! Pay attention to clues that your battery is on its way out. A lagging starter, a blinking battery or check engine light, bloated battery case, corrosion-covered posts, or dim headlights can all be signs that your battery is waving goodbye.

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. Stop by for a free battery test and, if necessary, a battery replacement to help keep your 2021 Audi S4 running! Car batteries are only one of our many strong suits. Our expert technicians understand Audi service recommendations for S4 car batteries’ reserve capacities and cold cranking amps. Get help choosing the battery size that fits your car perfectly, and schedule an appointment today for a quick car battery replacement.

Is There a DieHard Battery for S4s?

We know what’s best for your Audi S4, 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 some of the toughest conditions. DieHard batteries go above and beyond and house the latest technology to meet the growing power requirements of new vehicles and their accessories. A DieHard battery isn't an ordinary car battery. It's extraordinary. Buy a DieHard battery for your Audi S4 and get behind the wheel with confidence. Why? Because performance will be there when you're counting on it. That's the kind of battery we deliver.

Making Your S4’s New Battery Last

Have you recently had a fresh battery installed in your Audi S4? Congrats! Give your new car battery the best start with proper care. turning off all of the lights when you leave your vehicle, cutting back on unnecessary short trips, keeping your battery posts clean, and not playing the radio or using other electronics when the engine is turned off.