Why doesn’t my Rainier 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 may have been leaving your car doors ajar and the lights on overnight. Stop by for a complimentary battery check at your local Firestone Complete Auto Care and get a handle on your car battery’s health.

What happens to my old Rainier battery?

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

What’s the cost of DieHard batteries for Buick Rainiers?

Get affordable prices on Buick Rainier 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?

The typical 12-volt car battery may last three to five years, depending on the type of battery, the driving conditions, and how well the battery is maintained.

Why is there white, crusty buildup on my Rainier’s battery post?

If you notice white, crusty stuff around the battery terminals of your Rainier, 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 Rainier’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.

How do I remove corrosion from my Rainier car battery?

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 Rainier owner’s manual for instructions on how to do so.

Where can I purchase Rainier batteries near me?

When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install Rainier 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.

Car Batteries for 2005 Buick Rainier

Get a New Buick Battery

Buick Rainier Batteries Near You

Don’t let a dead battery stop you. Shop replacement car batteries for your 2005 Buick Rainier at Firestone Complete Auto Care.

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The Right Battery Size for a 2005 Buick Rainier

Not sure what battery to get for your Buick Rainier? Use this chart to find the right battery size and CCAs for your Buick Rainier.

Battery	Engine	Warranty		Cold Cranking Amps
78-1	L6/4.2L	Replacement 24 months	Performance months	700
78FT-2	L6/4.2L	Replacement 36 months	Performance months	800
78-AGM	L6/4.2L	Replacement 36 months	Performance months	740
78-1	V8/5.3L	Replacement 24 months	Performance months	700
78FT-2	V8/5.3L	Replacement 36 months	Performance months	800
78-AGM	V8/5.3L	Replacement 36 months	Performance months	740

BATTERIES
L6/4.2L - Battery: 78-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 700
L6/4.2L - Battery: 78FT-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
L6/4.2L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740
V8/5.3L - Battery: 78-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 700
V8/5.3L - Battery: 78FT-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
V8/5.3L - Battery: 78-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740

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Buy the Right Battery for Your Buick Rainier

You can pretty much drive your Buick Rainier until you don't want to anymore. But your Rainier's battery? Don't count on it to last forever. On average, auto batteries last anywhere from three to five years. Check your battery regularly and replace it as needed so it doesn’t leave you and your Buick Rainier stranded. Watch for signs that your current battery is getting too old or too weak. A slow engine crank, an illuminated battery or check engine light, bloated battery case, corrosion-covered posts, or weak lights may all indicate 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. Drop in for a free battery check and, if needed, get your Buick Rainier a replacement battery. Car batteries are only one of our many strong suits. Our technicians are familiar with Buick-specific recommendations for Rainier battery CCAs and reserve capacity. Get help choosing the battery size that matches your vehicle, and schedule an appointment today for a quick car battery replacement.

Find the Right DieHard Battery for Your Rainier

We know what’s best for your Buick Rainier, which is why we carry just that. You need a reliable, durable and powerful battery in even some of the toughest conditions. DieHard batteries go above and beyond using the latest innovative technology to satisfy the growing power demands of modern vehicles They're no ordinary battery, they're extraordinary. Go with a DieHard battery for your Rainier and have the peace of mind that your battery will perform when you need it. That’s why you should choose batteries from Firestone Complete Auto Care.

Making Your Rainier’s New Battery Last

Got a new car battery installed in your 2005 Buick Rainier? Good thinking! Give your new car battery the best start with proper care. You can take care of your battery by cutting back on unnecessary 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 Rainier Car Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have battery questions that are Buick Rainier-specific, stop by your nearest store. Our expert techs have the answers you need.

Why doesn’t my Rainier 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 may have been leaving your car doors ajar and the lights on overnight. Stop by for a complimentary battery check at your local Firestone Complete Auto Care and get a handle on your car battery’s health.
What happens to my old Rainier battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
What’s the cost of DieHard batteries for Buick Rainiers? Get affordable prices on Buick Rainier 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? The typical 12-volt car battery may last three to five years, depending on the type of battery, the driving conditions, and how well the battery is maintained.
Why is there white, crusty buildup on my Rainier’s battery post? If you notice white, crusty stuff around the battery terminals of your Rainier, 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 Rainier’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.
How do I remove corrosion from my Rainier car battery? 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 Rainier owner’s manual for instructions on how to do so.
Where can I purchase Rainier batteries near me? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install Rainier 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.