Why doesn’t my Boxster battery stay charged?

A battery is in its final hour when it will no longer hold a charge. The battery may be too old. Or, you may have a habit of leaving your car doors open and the lights on overnight. Stop by for a free battery test at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.

What do you do with my old Boxster battery?

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

How much do DieHard batteries cost for your Porsche Boxster?

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?

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, crusty buildup on my Boxster’s battery post?

The white, crusty stuff that can accumulate around Boxster 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 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?

You can shop for Boxster 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.

2008 Porsche Boxster Batteries

Get a New Porsche Battery

Get a New Porsche Boxster Battery

Don't let a failing battery slow you down. Shop replacement batteries for 2008 Porsche Boxsters today and schedule a quick installation at Firestone Complete Auto Care.

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Battery Size & Replacement for 2008 Porsche Boxster

Need more info about Porsche Boxster batteries? Use the following chart to find information on Porsche Boxster battery size and cold cranking amps.

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
94RH7	H6/3.4L	Replacement 36 months	Performance months	800
H7-AGM	H6/3.4L	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
H6/3.4L - Battery: 94RH7 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
H6/3.4L - Battery: H7-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850

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Shopping for Porsche Boxster Car Batteries

You can pretty much drive your Porsche Boxster until you don't want to anymore. But your Boxster's battery? Don't count on it to last forever. On average, auto batteries last anywhere from three to five years. Don’t get stranded by your Boxster’s car battery. Replace it regularly instead! Watch for signs that your current battery is getting too old or too weak. A lagging starter, a blinking battery or check engine light, bloated battery case, corroded battery terminals, or dim headlights can all signal that your battery is on its last leg.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. With computerized testing we can see how much charge is left in your battery. Visit us for a complimentary battery check and, if necessary, a battery replacement to help keep your 2008 Porsche Boxster running! Car batteries are only one of our many strong suits. Our technicians are well-acquainted with Porsche’s service specs for Boxster battery CCAs and reserve capacity. Get help figuring out the battery size that fits your car perfectly, and schedule a weekday or weekend battery replacement service for your car.

Is There a DieHard Battery for Boxsters?

Your Porsche Boxster deserves the best, which is why we exclusively carry the best. Your Boxster needs a reliable, durable and powerful battery in even some of the toughest conditions. DieHard batteries shatter expectations using the latest innovative technology to satisfy the growing power demands of modern vehicles A DieHard battery isn't an ordinary car battery. It's extraordinary. Choose a DieHard battery for your Porsche Boxster and get behind the wheel with confidence. Why? Because your battery will perform when you need it. That's the kind of battery we deliver.

After Buying 2008 Porsche Boxster Battery

Did you recently have a new 2008 Porsche Boxster car battery installed? Congrats! Now, help it last longer and stay charged by caring for it from the get-go. turning off all of the lights when you leave your vehicle, decreasing the number of short trips you take, 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 Boxster-specific battery question, pay us a visit. Our technicians are happy to help.

Why doesn’t my Boxster battery stay charged? A battery is in its final hour when it will no longer hold a charge. The battery may be too old. Or, you may have a habit of leaving your car doors open and the lights on overnight. Stop by for a free battery test at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.
What do you do with my old Boxster battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
How much do DieHard batteries cost for your Porsche Boxster? 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? 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, crusty buildup on my Boxster’s battery post? The white, crusty stuff that can accumulate around Boxster 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 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? You can shop for Boxster 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.