Car Batteries for 2003 Porsche 911

Porsche 911 Batteries Near You

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 2003 Porsche 911 today and schedule a quick installation at Firestone Complete Auto Care.

Battery Size & Replacement for 2003 Porsche 911

Researching battery replacements for your Porsche 911? Use this chart to find the right battery size and CCAs for your Porsche 911.

Battery Engine Warranty Cold Cranking Amps
94RH7 H6/3.6L Replacement 36 months Performance months 800
H7-AGM H6/3.6L Replacement 36 months Performance months 850
BATTERIES

H6/3.6L

- Battery: 94RH7

- Warranty: Replacement 36 months, Performance months

- Cold Cranking Amps: 800

H6/3.6L

- Battery: H7-AGM

- Warranty: Replacement 36 months, Performance months

- Cold Cranking Amps: 850

Shopping for Porsche 911 Car Batteries

You can pretty much drive your Porsche 911 until you don't want to anymore. But your 911'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 911’s car battery. Replace it regularly instead! Look out for symptoms of a faulty car battery. A sluggish engine start, a blinking battery or check engine light, swollen battery case, corroded battery terminals, or dim headlights can all be signs that your battery needs attention.

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 911 running! Car batteries are only one of our many strong suits. Our technicians are familiar with Porsche-specific recommendations for 911 battery CCAs and reserve capacity. Get help identifying the type and size of battery that matches your vehicle, and schedule a weekday or weekend battery replacement service for your car.

Is There a DieHard Battery for 911s?

Your Porsche 911 deserves the best, which is why we exclusively carry the best. You need a reliable, durable and powerful battery in even some of the toughest conditions. DieHard batteries shatter expectations using state-of-the-art advancements to meet the expanding power needs of new vehicles and their accessories. They're no ordinary battery, they're extraordinary. Choose a DieHard battery for your Porsche 911 and get behind the wheel with confidence. Why? Because 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 911 Battery

Got a new car battery installed in your 2003 Porsche 911? Great job! Give your new car battery the best start with proper care. ensuring all the lights are turned off before you leave the car, limiting short trips, keeping your battery posts clean, and avoiding radio and electronic component use when the engine is off.

Answers to Your 911 Car Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a battery question that's unique to your Porsche 911 battery, stop by your nearest store. Our technicians have the answers.

  • Why won't my 911 battery stay charged? A car battery that needs to be jump-started every time is as good as dead. The battery might be old. Or, you’ve been leaving the doors slightly open and the cabin light at night. 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 do you do with my dead 911 battery? We’ll recycle your car battery for you!
  • What’s the cost of DieHard batteries for Porsche 911s? Get affordable prices on Porsche 911 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 often should I replace my car battery? A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.
  • Why is there white, flaky stuff around my 911’s battery post? The white, crusty stuff that can accumulate around 911 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 a corroded 911 battery terminal? 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 911 owner’s manual for instructions on how to do so.
  • Where can I find a battery for my 911? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install 911 batteries at our stores nationwide — and our Firestone Direct mobile vans can provide convenient on-site battery services. Learn more about our mobile battery services and book an appointment.