Why doesn’t my G8 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 a habit of leaving your car doors open and the lights on overnight. Stop in for a free battery check at your local Firestone Complete Auto Care and get a handle on your car battery’s health.

What do you do with my dead G8 battery?

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

How much will replacing my Pontiac G8’s battery cost if I get a DieHard battery?

You can find affordable G8 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, flaky stuff around my G8’s battery post?

If you notice white, crusty stuff around the battery terminals of your G8, it's likely corrosion. A chemical reaction between battery acid and the air can create a white, powdery substance that builds up over time on the terminals. This buildup can interfere with the electrical connection between the battery and your G8’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.

How do I clean corrosion off my G8 vehicle battery?

Regularly inspect the terminals and clean them with a mixture of baking soda and water, a wire brush, and a rag. Disconnect the battery cables before cleaning to help avoid the risk of electrical shock. Always reference and follow the instructions in your vehicle owner’s manual prior to disconnecting the battery cables.

Who sells G8 batteries near me?

Your local Firestone Complete Auto Care sells and installs G8 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

2009 Pontiac G8 Batteries

Get a New Pontiac Battery

Get a Battery for Your Pontiac G8

Don't let a failing battery slow you down. Shop replacement batteries for 2009 Pontiac G8s today and schedule a quick installation at Firestone Complete Auto Care.

Shop Batteries

The Right Battery Size for a 2009 Pontiac G8

Not sure what battery to get for your Pontiac G8? Use the following chart to find information on Pontiac G8 battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
94RH7	V6/3.6L	Replacement 36 months	Performance months	800
H7-AGM	V6/3.6L	Replacement 36 months	Performance months	850
94RH7	V8/6.2L	Replacement 36 months	Performance months	800
H7-AGM	V8/6.2L	Replacement 36 months	Performance months	850
94RH7	V8/6.0L	Replacement 36 months	Performance months	800
H7-AGM	V8/6.0L	Replacement 36 months	Performance months	850

BATTERIES
V6/3.6L - Battery: 94RH7 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
V6/3.6L - Battery: H7-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850
V8/6.2L - Battery: 94RH7 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
V8/6.2L - Battery: H7-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850
V8/6.0L - Battery: 94RH7 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
V8/6.0L - Battery: H7-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850

Schedule an Appointment

Shopping for Pontiac G8 Car Batteries

Your G8 doesn't have an expiration date, but its battery does. The average car battery lasts three to five years. Don’t get stranded by your G8’s car battery. Replace it regularly instead! Look out for symptoms of a faulty car battery. A slow engine crank, an illuminated check engine light or battery signal, bloated battery case, corrosion-covered posts, and subpar electrical performance can all be signs that your battery is on its last leg.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. Our equipment can see how much charge is left in your battery. Visit us for a complimentary battery check and, if needed, get your Pontiac G8 a replacement battery. Automotive batteries are just one of our many areas of expertise. Our expert technicians understand Pontiac service recommendations for G8 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.

Why Choose a DieHard Battery for Your G8?

We only want what’s best for your Pontiac G8, which is why we carry just that. You need a reliable, durable and powerful battery in even some of the toughest conditions. DieHard G8 batteries surpass expectations and house the latest technology to fuel the increasing power demands of modern vehicles A DieHard battery isn't an ordinary car battery. It's extraordinary. Go with a DieHard battery for your G8 and drive with confidence knowing that performance will be there when you're counting on it. That's the kind of battery we deliver.

Caring for a New Pontiac G8 Battery

Have you recently had a fresh battery installed in your Pontiac G8? 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 the battery posts corrosion-free, and not using electronics such as the radio and power outlets when the engine is off.

Answers to Your G8 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 Pontiac G8 battery, visit your nearest store. Our expert techs have the answers you need.

Why doesn’t my G8 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 a habit of leaving your car doors open and the lights on overnight. Stop in for a free battery check at your local Firestone Complete Auto Care and get a handle on your car battery’s health.
What do you do with my dead G8 battery? We recycle it, taking care of both your car and the Earth.
How much will replacing my Pontiac G8’s battery cost if I get a DieHard battery? You can find affordable G8 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, flaky stuff around my G8’s battery post? If you notice white, crusty stuff around the battery terminals of your G8, it's likely corrosion. A chemical reaction between battery acid and the air can create a white, powdery substance that builds up over time on the terminals. This buildup can interfere with the electrical connection between the battery and your G8’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.
How do I clean corrosion off my G8 vehicle battery? Regularly inspect the terminals and clean them with a mixture of baking soda and water, a wire brush, and a rag. Disconnect the battery cables before cleaning to help avoid the risk of electrical shock. Always reference and follow the instructions in your vehicle owner’s manual prior to disconnecting the battery cables.
Who sells G8 batteries near me? Your local Firestone Complete Auto Care sells and installs G8 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.