Why won't my C350 battery stay charged?

A battery is in its final hour when it will no longer hold a charge. The battery may be too old. Or, you’ve been leaving the doors slightly open and the cabin light at night. Stop in for a free battery check at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.

What happens to my old C350 battery?

We’ll recycle your car battery for you!

How much will replacing my Mercedes-Benz C350’s battery cost if I get a DieHard battery?

You can find affordable C350 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 often should I replace my car battery?

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.

What is the white, crusty substance accumulating on my C350’s battery post?

A chemical reaction between battery acid and the air can cause a white, crusty buildup to form on the terminals of your C350 car battery. This buildup — known as corrosion — can impede the flow of electricity and cause a range of issues, from poor performance to premature battery failure.

What do I do about corrosion on my C350 car 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.

Where can I purchase C350 batteries near me?

When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install C350 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 Mercedes-Benz C350 Batteries

Get a New Mercedes-Benz Battery

Get a New Mercedes-Benz C350 Battery

Don't let a failing battery slow you down. Shop replacement batteries for 2009 Mercedes-Benz C350s today and schedule a quick installation at Firestone Complete Auto Care.

Shop Batteries

The Right Battery Size for a 2009 Mercedes-Benz C350

Researching battery replacements for your Mercedes-Benz C350? Check the chart to find the right car battery size and cold cranking amps for your C350.

Battery	Engine	Warranty		Cold Cranking Amps
94RH7	V6/3.5L	Replacement 36 months	Performance months	800
H7-AGM	V6/3.5L	Replacement 36 months	Performance months	850

BATTERIES
V6/3.5L - Battery: 94RH7 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
V6/3.5L - Battery: H7-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850

Schedule an Appointment

Buying a Replacement Battery for Mercedes-Benz C350

Your C350 doesn't have an expiration date, but its battery does. Generally, car batteries last from three to five years. Don’t get stranded by your C350’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, or weak lights can all be signs that your battery needs attention.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. With computerized testing we can see how much charge is left in your battery. Drop in for a free battery check and, if needed, a replacement battery for your 2009 Mercedes-Benz C350. Automotive batteries are just one of our many areas of expertise. Our expert technicians understand Mercedes-Benz service recommendations for C350 battery cold cranking amps and reserve capacity. Get help figuring out the battery size that matches your vehicle, and schedule a fast car battery replacement at your earliest convenience.

Firestone Has DieHard Batteries for C350s

We only want what’s best for your Mercedes-Benz C350, which is why we only carry top-of-the-line replacement parts and batteries. Your C350 needs a reliable, durable and powerful battery in even some of the toughest conditions. DieHard batteries shatter expectations and house the latest technology to satisfy the expanding power requirements of new vehicles and their accessories. Don't call a DieHard battery ordinary. It's an extraordinary battery. Go with a DieHard battery for your C350 and have the peace of mind that 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 Mercedes-Benz C350 Battery

Have you recently had a fresh battery installed in your Mercedes-Benz C350? Great job! You can give your new battery a head start with proper care and attention. You can take care of your battery by decreasing the number of short trips you take, keeping your battery posts clean, and not playing the radio or using other electronics when the engine is turned off.