Why won't my Boxster battery stay charged?

A battery that won't hold a charge is almost as good as dead. It may be getting old. Or, you may have been leaving your car doors ajar and the lights on overnight. Stop by for a free battery test at your nearest Firestone Complete Auto Care and get a handle on your car battery’s health.

What happens to my old Boxster battery?

We’ll recycle your car battery for you!

How much will replacing my Porsche Boxster’s battery cost if I get a DieHard battery?

Porsche Boxster 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 long can I expect my car battery to 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 Boxster’s battery post?

The white, flaky stuff that can build up around your Boxster’s battery terminals is known as corrosion. Acid leaking from your vehicle’s battery post can have a chemical reaction with the air, leading to an accumulation of the white, powdery substance over time. Corrosion can affect the flow of electricity between your battery and the electrical system in your Boxster, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.

How do I clean corrosion off my Boxster vehicle battery?

Regularly inspecting and cleaning your battery terminals will help keep your Boxster’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 find a battery for my Boxster?

Your local Firestone Complete Auto Care sells and installs Boxster 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 2003 Porsche Boxster

Get a New Porsche Battery

Get a Battery for Your Porsche Boxster

Don’t let a dead battery stop you. Shop replacement car batteries for your 2003 Porsche Boxster at Firestone Complete Auto Care.

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2003 Porsche Boxster Battery Replacement & Size

Need more info about Porsche Boxster batteries? Use this chart to find the right battery size and CCAs for your Porsche Boxster.

Battery	Engine	Warranty		Cold Cranking Amps
94RH7	H6/2.7L	Replacement 36 months	Performance months	800
H7-AGM	H6/2.7L	Replacement 36 months	Performance months	850
48H6	H6/3.2L	Replacement 36 months	Performance months	730
H7-AGM	H6/3.2L	Replacement 36 months	Performance months	850

BATTERIES
H6/2.7L - Battery: 94RH7 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
H6/2.7L - Battery: H7-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850
H6/3.2L - Battery: 48H6 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 730
H6/3.2L - Battery: H7-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850

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Shopping for Porsche Boxster Car Batteries

Your Boxster doesn't have an expiration date, but its battery does. 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 Porsche Boxster stranded. Look out for symptoms of a faulty car battery. A lagging starter, an illuminated check engine light or battery signal, bloated battery case, corroded battery terminals, or dim headlights can all signal 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. Visit us for a complimentary battery check and, if necessary, a battery replacement to help keep your 2003 Porsche Boxster running! Automotive batteries are just one of our many areas of expertise. Our technicians are familiar with Porsche-specific recommendations for Boxster battery CCAs and reserve capacity. Get help choosing the battery size that's best for your Boxster, and schedule a weekday or weekend battery replacement service for your car.

Is There a DieHard Battery for Boxsters?

We only want what’s best for your Porsche Boxster, which is why we carry just that. Your Boxster needs a reliable, durable and powerful battery that can handle most extreme environments and weather conditions. DieHard batteries shatter expectations using the latest innovative technology to fuel the increasing power requirements of new vehicles. A DieHard battery isn't an ordinary car battery. It's extraordinary. Go with a DieHard battery for your Boxster 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.

After Buying 2003 Porsche Boxster Battery

Have you recently had a fresh battery installed in your Porsche Boxster? Good thinking! You can give your new battery a head start with proper care and attention. You can take care of your battery by limiting short trips, keeping the battery posts corrosion-free, and not playing the radio or using other electronics when the engine is turned off.

Commonly Asked Boxster Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have a battery question that's unique to your Porsche Boxster battery, pay us a visit. Our technicians are happy to help.

Why won't my Boxster battery stay charged? A battery that won't hold a charge is almost as good as dead. It may be getting old. Or, you may have been leaving your car doors ajar and the lights on overnight. Stop by for a free battery test at your nearest Firestone Complete Auto Care and get a handle on your car battery’s health.
What happens to my old Boxster battery? We’ll recycle your car battery for you!
How much will replacing my Porsche Boxster’s battery cost if I get a DieHard battery? Porsche Boxster 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 long can I expect my car battery to 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 Boxster’s battery post? The white, flaky stuff that can build up around your Boxster’s battery terminals is known as corrosion. Acid leaking from your vehicle’s battery post can have a chemical reaction with the air, leading to an accumulation of the white, powdery substance over time. Corrosion can affect the flow of electricity between your battery and the electrical system in your Boxster, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.
How do I clean corrosion off my Boxster vehicle battery? Regularly inspecting and cleaning your battery terminals will help keep your Boxster’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 find a battery for my Boxster? Your local Firestone Complete Auto Care sells and installs Boxster batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.