If you find yourself pulling out the jumper cables frequently, you may wonder whether a faulty alternator or a malfunctioning battery causes the issue. Properly diagnosing this situation is critical, as it can help ensure your car receives the proper service to fix it. Here’s a look at a few signs that indicate your vehicle will need a battery replacement.

Need a Battery Replacement? How to Know If You Have a Bad Battery or Faulty Alternator

1. Dim Headlights

Your headlights ensure you can clearly see your surroundings at night or in inclement weather conditions. Because these components receive their power from the battery, a dying power source may cause your lights to dim. If you’re struggling to see the road on rainy days or in the evenings, you’re likely experiencing a battery problem. Avoid driving in poor visibility conditions until you’ve had the vehicle properly inspected and repaired.

2. Visible Corrosion

If you suspect a battery issue, don’t hesitate to look under the hood and inspect the battery yourself. If you see visible corrosion on the battery, this is a good indication that it has become damaged or developed a leak – and that means you need to get a replacement as quickly as possible. A malfunctioning alternator, on the other hand, won’t cause such damage to the battery.

3. Difficulty Starting

In addition to powering your car’s electrical components, the battery is also responsible for igniting the engine and starting your vehicle. However, if the battery is dying, you may notice that it takes longer than usual to start the car or that it won’t start at all. If the battery is completely dead, you won’t even hear a noise or see lights turn on while turning the key.

 

If you notice any of these signs, you’ll likely need a battery replacement right away. To avoid getting stranded on the side of the road, call Mullanphy Tire & Automotive to take advantage of their reliable repairs and competitive prices. Based in Florissant, MO, the certified technicians at this auto repair shop offer top-notch equipment, including tires, batteries, and air filters. To schedule your appointment with one of the most trusted auto shops in St. Louis County, call them today at (314) 921-4961. You can also visit their website for more information about their services.