Weak Car Battery-Symptoms, Weather, and Air Conditioner

Your car battery is what supplies your car with electrical current. It can perform numerous different functions, but its major function is to start the starter and start the car engine. This means that it is important to watch out for signs of a weak car battery. This is because if the battery is low on power, the engine will not get the support it needs to start the vehicle, which could lead to a malfunction that leaves you stranded.

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What are weak car battery symptoms?

To identify the main symptoms of a weak car battery in your car, you need to know a few important parts of your car. Knowing what a car battery is, the purpose of a car battery, the major causes of the weak car battery symptoms, and what parts of your car can cause the problem?  These are important in diagnosing your car problem. The car relies on battery power to run its entire electrical system, which includes the starting system. A weak car battery generally produces a number of signs that signify its imminent failure.

While some of the following signs are similar to those of a damaged alternator, some clear differences can help you diagnose and troubleshoot the symptoms you encounter in your vehicle.

Engine Not Starting: There may be a time when your car engine comes to a complete stop and refuses to start once you turn on the ignition.  In such cases, you will always hear a long crank coming from under the hood or perhaps a click. You need to turn on the vehicle ignition a few times. If the engine eventually starts, that means the problem is likely because of a faulty starter. But, if the engine does not start after several attempts, it’s possible that your car battery is weak or dead.

Dimming Headlights: If you discover that your headlights are always dimming without getting brighter even when you accelerate the engine, it is because of a dying battery that will soon be totally dead. When the sign of the bad car battery is compared to that of the alternator, in this case, the lights will not get brighter after driving your vehicle and will remain at suboptimal brightness throughout the journey.

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Key clacking Sound: When checking for symptoms of a weak car battery, clacking sounds while the key is in the ignition can be a sure sign of car battery problems. When you turn on the key, the battery passes an electrical current to the key starter solenoid to start the car. If the battery dies, the solenoid will not receive the signal and the starter will have less power to start the car.

Slow Engine Cranking: This is a general warning sign that your vehicle is about to die and that you are experiencing the symptoms of a weak car battery. If you observe this sign in your car when checking for signs of a weak car battery, this is a very important symptom that your car battery is weak and needs to be replaced or repaired before the battery is completely dead.

Engine Misfiring: Fortunately, for many drivers, this is a very obvious warning sign. When checking for the symptoms of a weak car battery, a bad battery can cause irregular sparks; this can lead to fuel buildup inside the cylinders, which can cause the engine to misfire. When your vehicle misfires, it means that your car's internal combustion is not working properly.

Flawed crankshaft position sensor: This is perhaps the most common reason when it comes to cranking the engine. If the crankshaft position sensor is not properly working, it can affect the car's internal computer, the engine control unit, to malfunction. This engine’s computer is responsible for the crankshaft position sensor; therefore if it detects any issue, you will experience symptoms of a weak car battery.

Does cold weather affect car battery?

Before we move on to what can drain a car battery, let's try to understand the basics of how a battery works. Your car battery includes energy cells and a lead-acid solution that work together to supply a jolt of energy that get things moving and shaking when you turn on the ignition key. The battery converts chemical energy into electrical energy. Without the battery, your car's engine would not work and the electronics would not work.

Cold weather slows down everything, especially the chemical reaction that takes place inside your car battery. As a matter of fact, at 32 degrees Fahrenheit, a car battery loses about 35 percent of its potency. And at 0 degrees Fahrenheit, it loses up to 60 percent of its potency, although your engine requires almost twice the power to start. Cool-weather affects car batteries. The colder the weather, the weaker the batteries are. Even a fully charged strong battery won't feel 100 percent if the temperatures drop too low. And if your battery is only half charged, it will freeze to a solid-state at just -10 Fahrenheit.

How do you use a weak car battery air conditioner?

A weak battery can make your car air conditioner to malfunction or not work at all. Vehicle batteries need sufficient voltage to activate the AC compressor, and while it may be powerful enough to operate the rest of the vehicle; it can still be too weak to power your car's air conditioning. So, if you have a constantly weak battery, it will eventually damage another electrical system in your car. Usually, a bad alternator causes a weak battery. Your car battery is one of the sources and causes of electrical problems in your car.

If your alternator is not working, it can cause various electronic devices in your car to stop working. This includes the engine, the radio, the air conditioning, etc. And once the alternator is replaced, the air conditioner will likely work again.

In conclusion, a weak battery may not look like an urgent safety problem, but a completely dead battery surely is. If you notice any of these signs, get your car battery repair or replace it before it is too late. Remember, the battery is very important to your vehicle's life. It is not only essential for starting your vehicle, but it also powers all of the electrical components in your vehicle.