Battery Replacement

You can think of every Hyundai as a rolling computer. From advanced safety systems and driver-assist features to touchscreen displays and keyless entry, modern vehicles place serious demands on the battery. 

 

As Car and Driver puts it: "Modern cars have specific requirements on their electrical systems, and the wrong power source could leave you stranded."

 

 That's why we install genuine OEM Hyundai batteries and other Hyundai-approved choices — designed to meet your vehicle's exact specifications and keep everything running the way it should. 

 

Don’t wait! As Kelley Blue Book writes, "a weak battery wreaks havoc on other electric components, including the vehicle's alternator." Well-timed battery replacement helps protect your vehicle’s systems. 

 

Get the right battery at Earnhardt Hyundai and be on your way fast!

Why Choose Earnhardt Hyundai for Battery Service in Avondale AZ

• Factory-trained Hyundai technicians who know your vehicle inside and out

• Genuine OEM Hyundai batteries built to your vehicle's exact specifications

• Advanced diagnostic equipment to test your battery, starter, and alternator

• Over 70 years of trusted Earnhardt family service

• Convenient location in the Avondale Automall, just off I-10 — serving Phoenix, Glendale, Peoria, and the entire West Valley

It Might Not Be the Battery — Here's Why Diagnosis Matters

What if you take your car to an auto store and get a new battery, only to have it die again a few weeks later!?! That is the experience many owners have. So before you replace it for the second or third time, consider this: the battery might just be a symptom.

Common signs like slow cranking, dim headlights, or a no-start condition can point to:

• Loose battery wires

• A failing battery

• A worn starter

• An alternator that's not charging properly

• Battery drain (parasitic draw)

That's why our technicians test the whole electrical system — not just the battery.  At your request, our Hyundai trained technicians will look at root causes. Finding and correcting the problem may save the battery and prevent future breakdowns.




What Our Customers Say

When you bring your vehicle to Earnhardt Hyundai, our team can look at the whole picture.

"Had an appointment for a new battery and when I got there my service engine light was on. Ron Werner explained to me what the problem was... I was very pleased with the fact that I got my car back so soon. Ron went over everything with me. Very satisfied with his service." — Sandra L., Earnhardt Hyundai Customer 

Schedule Your Battery Service Today

Whether you need a quick battery test, a battery replacement, or a full electrical system diagnosis, we're here to help. Don't wait until you're stranded.


Call us at 623-220-4150 or schedule service online.

Frequently Asked Questions About Battery Replacement in Phoenix

What is battery drain?

Sometimes called parasitic draw, this happens when something in your vehicle continues pulling power even after the engine is off. A faulty alternator, an electrical short, or a malfunctioning module can drain your battery overnight. Replacing your battery will not fix the problem in the long run.

How does a battery affect the starter and alternator?

A weak battery forces your starter and alternator to work overtime. Essentially they struggle from not getting enough power. If ignored or undiagnosed, a weak battery can damage the starter and alternator. On the flip side, a failing alternator can kill a brand-new battery in weeks.

What happens if battery wires are loose?

When the wires aren’t secure, power isn’t being delivered evenly to the starter, alternator and other components. This is a quick and easy fix that will save your battery life.