Car Batteries for 1999 Porsche 911

Get a New Porsche Battery

Get a New Porsche 911 Battery

Don't let a failing battery slow you down. Shop replacement batteries for 1999 Porsche 911s today and schedule a quick installation at Firestone Complete Auto Care.

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1999 Porsche 911 Battery Replacement & Size

Need more info about Porsche 911 batteries? Check the chart to find the right car battery size and cold cranking amps for your 911.

Battery Engine Warranty Cold Cranking Amps
48H6 H6/3.4L Replacement 36 months Performance months 730
H6-AGM H6/3.4L Replacement 36 months Performance months 760
BATTERIES

H6/3.4L

- Battery: 48H6

- Warranty: Replacement 36 months, Performance months

- Cold Cranking Amps: 730

H6/3.4L

- Battery: H6-AGM

- Warranty: Replacement 36 months, Performance months

- Cold Cranking Amps: 760

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Buy the Right Battery for Your Porsche 911

Sadly, your Porsche 911 won't last forever. Neither will its battery. 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, an illuminated check engine light or battery signal, bloated battery case, corrosion-covered posts, or dim headlights can all signal that your battery is waving goodbye.

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. Drop in for a free battery check and, if needed, get your Porsche 911 a replacement battery. Automotive batteries are just one of our many areas of expertise. Our technicians are well-acquainted with Porsche’s service specs for 911 car batteries’ reserve capacities and cold cranking amps. Get help identifying the type and size of battery that's best for your 911, and schedule a fast car battery replacement at your earliest convenience.

Find the Right DieHard Battery for Your 911

We only want what’s best for your Porsche 911, 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 shatter expectations and house the latest technology to fuel the growing power demands of new vehicles. A DieHard battery isn't an ordinary car battery. It's extraordinary. Buy a DieHard battery for your Porsche 911 and drive with confidence knowing that your battery will perform when you need it. That's the kind of battery we deliver.

After Buying 1999 Porsche 911 Battery

Did you recently have a new 1999 Porsche 911 car battery installed? Great job! 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, cutting back on unnecessary short trips, cleaning your battery posts, and avoiding radio and electronic component use when the engine is off.

Commonly Asked 911 Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have battery questions that are Porsche 911-specific, pay us a visit. Our technicians have the answers.

  • Why won't my 911 battery stay charged? A battery that won't hold a charge is almost as good as dead. The battery might be old. Or, you may have been leaving your car doors ajar and the dome lights on during the night. Stop in for a free battery check at your nearest Firestone Complete Auto Care and get a handle on your car battery’s health.
  • What do you do with my old 911 battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
  • How much will replacing my Porsche 911’s battery cost if I get a DieHard battery? 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 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 911’s battery post? The white, flaky stuff that can build up around your 911’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 911, 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 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.