Why won't my Boxster 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’ve been leaving the doors slightly open and the dome lights on during the night. Stop by for a free battery test at your nearest Firestone Complete Auto Care and learn more about your battery's charge.

What do you do with my old Boxster battery?

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

How much do DieHard batteries cost for your Porsche Boxster?

You can find affordable Boxster 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, 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.

What do I do about corrosion on my Boxster car battery?

You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your Boxster owner's manual to learn how to disconnect the battery cables. After disconnecting the cables, use a mixture of water and baking soda, a wire brush, and a rag to carefully clean the terminals.

Where can I find a battery for my Boxster?

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

2005 Porsche Boxster Car Batteries

Get a New Porsche Battery

Get a Battery for Your Porsche Boxster

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 2005 Porsche Boxster today and schedule a quick installation at Firestone Complete Auto Care.

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2005 Porsche Boxster Battery Replacement & Size

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

Battery	Engine	Warranty		Cold Cranking Amps
94RH7	H6/2.7L	Replacement 36 months	Performance months	800
H6-AGM	H6/2.7L	Replacement 36 months	Performance months	760
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: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760
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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Buy the Right Battery for Your Porsche Boxster

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. Generally, car batteries last from three to five years. You want to replace your 2005 Porsche Boxster battery before it fails and leaves you stranded. Watch for signs that your current battery is getting too old or too weak. A lagging starter, an illuminated check engine light or battery signal, bloated battery case, corroded battery posts, and subpar electrical performance 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, get your Porsche Boxster a replacement battery. 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 choosing the battery size that's best for your Boxster, and schedule an appointment today for a quick car battery replacement.

Firestone Has DieHard Batteries for Boxsters

We know what’s best for your Porsche Boxster, which is why we carry just that. You need a reliable, durable and powerful battery that can handle most extreme environments and weather conditions. DieHard batteries go above and beyond using the latest innovative technology to satisfy the growing power demands of modern vehicles Don't call a DieHard battery ordinary. It's an extraordinary battery. Go with a DieHard battery for your Boxster and drive with confidence knowing that performance will be there when you're counting on it. That’s why you should choose batteries from Firestone Complete Auto Care.

Caring for a New Porsche Boxster Battery

Have you recently had a fresh battery installed in your Porsche Boxster? Great job! Give your new car battery the best start with proper care. Give your new battery a hand by cutting back on unnecessary short trips, keeping the battery posts corrosion-free, and avoiding radio and electronic component use when the engine is 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, stop by your nearest store. Our technicians are happy to help.

Why won't my Boxster 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’ve been leaving the doors slightly open and the dome lights on during the night. Stop by for a free battery test at your nearest Firestone Complete Auto Care and learn more about your battery's charge.
What do you do with my old Boxster battery? We recycle it, taking care of both your car and the Earth.
How much do DieHard batteries cost for your Porsche Boxster? You can find affordable Boxster 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, 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.
What do I do about corrosion on my Boxster car battery? You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your Boxster owner's manual to learn how to disconnect the battery cables. After disconnecting the cables, use a mixture of water and baking soda, a wire brush, and a rag to carefully clean the terminals.
Where can I find a battery for my Boxster? At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install Boxster batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.