Why doesn’t my Flex 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 a habit of leaving your car doors open and the cabin light at night. 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 do you do with my dead Flex battery?

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

How much do DieHard batteries cost for your Ford Flex?

Ford Flex batteries can be affordable, especially when there's an available battery coupon. The best part is every DieHard battery comes with a free replacement warranty and extra coverage with DieHard Assurance.

How long is a car battery good for?

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.

What is the white, crusty substance accumulating on my Flex’s battery post?

The white, flaky stuff that can build up around your Flex’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 Flex, 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 Flex battery terminal?

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 carries Flex batteries near me?

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

2009 Ford Flex Batteries

Get a New Ford Battery

Ford Flex Batteries Near You

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

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The Right Battery Size for a 2009 Ford Flex

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

Battery	Engine	Warranty		Cold Cranking Amps
65-1	V6/3.5L	Replacement 24 months	Performance months	850
65-2	V6/3.5L	Replacement 36 months	Performance months	850
65-AGM	V6/3.5L	Replacement 36 months	Performance months	750

BATTERIES
V6/3.5L - Battery: 65-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 850
V6/3.5L - Battery: 65-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850
V6/3.5L - Battery: 65-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 750

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Shopping for Ford Flex Car Batteries

You can pretty much drive your Ford Flex until you don't want to anymore. But your Flex's battery? Don't count on it to last forever. The average car battery lasts three to five years. Don’t get stranded by your Flex’s car battery. Replace it regularly instead! Look out for symptoms of a faulty car battery. A sluggish engine start, an illuminated battery or check engine light, swollen battery case, corroded battery posts, or weak lights can all signal that your battery is waving goodbye.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. With computerized testing we can see how much charge is left in your battery. Stop by for a free battery test and, if needed, get your Ford Flex a replacement battery. Car batteries are only one of our many strong suits. Our expert technicians understand Ford service recommendations for Flex battery cold cranking amps and reserve capacity. Get help figuring out the battery size that fits your car perfectly, and schedule a weekday or weekend battery replacement service for your car.

Is There a DieHard Battery for Flexs?

We know what’s best for your Ford Flex, which is why we exclusively carry the best. Your vehicle needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard Flex batteries surpass expectations and house the latest technology to meet the increasing power requirements of new vehicles. A DieHard battery isn't an ordinary car battery. It's extraordinary. Buy a DieHard battery for your Ford Flex 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 Flex’s New Battery Last

Got a new car battery installed in your 2009 Ford Flex? Congrats! You can give your new battery a head start with proper care and attention. flipping the dome lights and headlights off when exiting the car, limiting short trips, keeping your battery posts clean, and not playing the radio or using other electronics when the engine is turned off.

Commonly Asked Flex Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have a Flex-specific battery question, pay us a visit. Our technicians have the answers.

Why doesn’t my Flex 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 a habit of leaving your car doors open and the cabin light at night. 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 do you do with my dead Flex battery? We recycle it, taking care of both your car and the Earth.
How much do DieHard batteries cost for your Ford Flex? Ford Flex batteries can be affordable, especially when there's an available battery coupon. The best part is every DieHard battery comes with a free replacement warranty and extra coverage with DieHard Assurance.
How long is a car battery good for? 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.
What is the white, crusty substance accumulating on my Flex’s battery post? The white, flaky stuff that can build up around your Flex’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 Flex, 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 Flex battery terminal? 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 carries Flex batteries near me? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install Flex 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.