Automobile Car

What Are the Signs of a Dead Car Battery?

Have you ever been startled to find your car stopped in the middle of the road? While plenty of things can cause your car to stop running, such as a dead battery, one of the most notable is when it comes to an unexpected stop.

When you are out driving, and the car sputters to a complete stop, it’s easy and frustrating to get annoyed. The issue comes about when you need to get home or to your next destination and can’t.

When you set out for a long drive, one of the most important things to do is check your car battery. With that in mind, here’s a helpful list of signs of a dead car battery.

Corrosion on the Connectors

Corrosion results from an excessive build-up of chemicals or minerals on the exposed metal surfaces of the connectors. This build-up can be caused by various factors, including exposure to water or a chemical reaction between the battery and the vehicle’s fluids.

Common signs of corrosion on the connectors include white or grey powdery deposits, rust spots, green or blackish discoloration, and bulged or uneven battery terminals.

Suppose you are ever suspicious of a dead car battery. In that case, inspect the connectors for any signs of corrosion before attempting to charge the battery, as corrosion on the connectors can lead to further damage.

Swollen Battery Case

This occurs when excessive heat is generated from the internal electrolytes of the battery, resulting in the battery expanding and ultimately warping the battery case. The heat results from the electrolytes’ chemical reaction being disrupted, indicating that the battery can no longer recharge or retain a sufficient charge.

It is important to note that a swollen battery case is not always indicative of a dead battery and a professional inspection of the battery is necessary to assess its capacity. 

Rotten-Egg Smells When You Pop Your Hood

Rotten egg smells when you pop the hood of your car can be a clear indicator of a dead battery. This is a result of a process termed Sulphation.

This is when sulphuric acid is produced from the battery cells and reacts with the metal plates in the battery, forming hydrogen sulfide gas which in turn smells like rotten eggs. In some extreme cases, the battery may also leak a blue-green liquid.

Dim Headlights

Another sign of car battery issues is dim headlights. When the battery begins to die, it does not store energy like it should, making it difficult for the headlights to maintain a consistent light.

If the headlights seem flickering or dim, it may signify a dead battery. This could be because the battery cannot store enough energy, or it could mean that the battery is not recharging and is on the brink of dying.

Electrical Issues

If the battery is dead, the first indication is usually a lack of power—no lights, no ignition, and no sound when the key is turned over. If the battery is drained, then the starter motor might not get enough of a charge to turn over the engine.

Additionally, the car’s lights may flicker or not light up if the battery is at fault. If a jump-start doesn’t help, then it’s likely that the battery is dead. If this is the case, it’s best to have the battery tested or replaced.

Frequent Jumps

The most common signs of a dead car battery indicate that it needs replacing. One of the first signs that your battery is on its way out is frequent jumps. This means that your car will no longer have adequate power to start the engine, leaving you needing a jump-start from another vehicle.

As you drive around town, you may have to jump your car several times in one day. This is usually because your battery is no longer holding a charge. 

Slower Start

A slower start can be a sign of car battery problems. If your car takes longer or needs extra cranking to start, it may signal that your battery is no longer providing enough current to power your vehicle. You may hear your engine clicking when you attempt to start it, and the lights on your dashboard may dim slightly as you attempt to start the vehicle.

If you notice any of these signs, you should take your car to a qualified mechanic as soon as possible. The mechanic can test the battery and ensure it can still provide enough power to start your car. They can suggest a suitable standard battery replacement if the battery is dead.

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Learn More About the Signs of a Dead Car Battery

In conclusion, if your car battery is not functioning optimally, it is wise to take it to a mechanic and get it checked out. Pay attention to the signs of a dead car battery, including weak headlights and slow turnover.

If you think your car battery might be dead, save yourself the trouble and take the time to inspect it for the tell-tale signs listed above. To get the most out of your car’s battery, check it regularly to avoid draining it.

If you are looking for more advice, tips, and information concerning the subjects featured on our blog, feel free to continue reading our site.

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