Why won’t my Ascent battery hold a charge?

A car battery that needs to be jump-started every time is as good as dead. The battery may be too old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop by for a free battery test at your local Firestone Complete Auto Care and learn more about your battery's charge.

What do you do with my old Ascent battery?

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

What’s the cost of DieHard batteries for Subaru Ascents?

You can find affordable Ascent 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 do car batteries last?

A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.

What is the white, crusty stuff around my Ascent’s battery post?

The white, crusty stuff that can accumulate around Ascent 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 Ascent vehicle battery?

To help extend the life of your battery, you should routinely inspect and clean the terminals using a baking soda and water mix, wire brush, and rag. Be sure to disconnect the battery cables before cleaning and check your Ascent owner’s manual for instructions on how to do so.

Who carries Ascent batteries near me?

Your local Firestone Complete Auto Care sells and installs Ascent batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

Car Batteries for 2021 Subaru Ascent

Get a New Subaru Battery

Get a New Subaru Ascent Battery

Don’t let a dead battery stop you. Shop replacement car batteries for your 2021 Subaru Ascent at Firestone Complete Auto Care.

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Battery Size & Replacement for 2021 Subaru Ascent

Researching battery replacements for your Subaru Ascent? Use the following chart to find information on Subaru Ascent battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
26R-3	H4/2.4L	Replacement 24 months	Performance months	575
35-2	H4/2.4L	Replacement 36 months	Performance months	640
35-AGM	H4/2.4L	Replacement 36 months	Performance months	650

BATTERIES
H4/2.4L - Battery: 26R-3 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 575
H4/2.4L - Battery: 35-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 640
H4/2.4L - Battery: 35-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 650

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Shopping for Subaru Ascent Car Batteries

You can pretty much drive your Subaru Ascent until you don't want to anymore. But your Ascent's battery? Don't count on it to last forever. The average car battery lasts three to five years. Don’t get stranded by your Ascent’s car battery. Replace it regularly instead! Pay attention to clues that your battery is on its way out. A slow engine crank, an illuminated battery or check engine light, swollen battery case, corroded battery posts, or weak lights can all signal that your battery is waving goodbye.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. Our equipment 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 Subaru Ascent. Car batteries are one of our many specialties! Our technicians are well-acquainted with Subaru’s service specs for Ascent car batteries’ reserve capacities and cold cranking amps. Get help figuring out the battery size that matches your vehicle, and schedule a weekday or weekend battery replacement service for your car.

Is There a DieHard Battery for Ascents?

We know what’s best for your Subaru Ascent, which is why we carry just that. Your Ascent needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries go above and beyond using the latest innovative technology to meet the increasing power needs of new vehicles. They're no ordinary battery, they're extraordinary. Buy a DieHard battery for your Subaru Ascent 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 Ascent’s New Battery Last

Got a new car battery installed in your 2021 Subaru Ascent? Great job! You can give your new battery a head start with proper care and attention. flipping the dome lights and headlights off when exiting the car, cutting back on unnecessary short trips, cleaning your battery posts, and not using electronics such as the radio and power outlets when the engine is off.

Commonly Asked Ascent Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have a battery question that's unique to your Subaru Ascent battery, visit your nearest store. Our technicians have the answers.

Why won’t my Ascent battery hold a charge? A car battery that needs to be jump-started every time is as good as dead. The battery may be too old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop by for a free battery test at your local Firestone Complete Auto Care and learn more about your battery's charge.
What do you do with my old Ascent battery? We recycle it, taking care of both your car and the Earth.
What’s the cost of DieHard batteries for Subaru Ascents? You can find affordable Ascent 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 do car batteries last? A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.
What is the white, crusty stuff around my Ascent’s battery post? The white, crusty stuff that can accumulate around Ascent 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 Ascent vehicle battery? To help extend the life of your battery, you should routinely inspect and clean the terminals using a baking soda and water mix, wire brush, and rag. Be sure to disconnect the battery cables before cleaning and check your Ascent owner’s manual for instructions on how to do so.
Who carries Ascent batteries near me? Your local Firestone Complete Auto Care sells and installs Ascent batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.