How Do Car Batteries Work

October 21st, 2020 by

How Do Car Batteries Work? Nearly every motorist has had to replace a car battery in Fresno at some point in the life cycle of their vehicle. That doesn’t mean that everyone fully understands how a car’s battery really works though. Yet, gaining a clear understanding of the importance of your battery might save you time and money when you need to check or replace one in the future.

How Do Car Batteries Work?

Under normal circumstances, you will have time and occasion to change your battery without it affecting your vehicle’s performance or inconveniencing your life. However, most vehicle recovery services get called for faulty car batteries in Fresno. That’s why it’s important to book your regular vehicle maintenance checks. A highly trained Fresno Mazda technician can keep your battery in good working condition.

The lead-acid battery that you find in most vehicles works in a straight-forward manner. Its main job is to get the engine started so that the alternator can power the vehicle. Inside a standard 12V battery there are six cells that produce around 2 volts of electricity each. Now, let’s go inside those cells.

What’s Happening Inside Your Car Battery?

Each cell has 16 lead plates. Half of the plates are treated with lead dioxide and have a positive charge. The other half is covered with lead sponges to maintain a negative charge. A separator is placed between the negative and positive plates to keep them from shorting out by touching.

There are conducting metal strips that run across each of the negative plates. A separate strip runs across the positive plates. Together, this creates a series for an amazing chemical reaction.

These plates all sit in an electrolyte solution that is mostly water but contains about 35% sulphuric acid. Sometimes, you’ll hear this referred to simply as battery fluid or “juice”. The solution acts as a conductor that helps carry the electrons across the whole assembly.

When you start your vehicle, the electrolyte solution inside the battery produces lead sulfate. This produces electrons on the positive plates and the electrons travel across the conducting metal to the negative side of the cell. Voila! 2 volts of electricity have been created.

The electrons are picked up by the positive plates of the second cell and travel through the circuit until they are released by the negative plates. Again, 2 volts more have been generated. This process repeats continuously until 12 volts have been created and the charge has traveled across all the battery cells.

Where Does the Electricity Go?

The electricity generated by your battery is transferred through the terminals. You’ll probably recognize these as the two large wires coming out of a positive and negative tap. If your headlights are going dim, your electrical systems are working properly, or you have problems starting your car, it could mean your terminals are loose or need to be cleaned.

It’s important to know that all lead car batteries have a finite lifespan. You will need to replace them periodically, usually every 5 years or so. If you need to replace car batteries in Fresno, then you should shop with automotive professionals who are familiar with your vehicle. That’s how you get the right battery at an affordable price.

Fresno Mazda is located at: 5499 N. Blackstone Avenue • Fresno, CA 93710

How Do Car Batteries Work

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