How do car batteries work?

724 views

Hi all,

I always wondered how a car battery is able to charge cell phones, radio, dashboard and all other things that requiere electricity, and not need to to be recharged for a couple years. Why does it not die out sooner? Can someone please on how it’s able to achieve this curious feat?

Thanks!

In: Engineering

7 Answers

Anonymous 0 Comments

Your car battery holds several hundred amps of electricity to start your car and keep it running.

So the car battery is hooked up to your starter motor. When you turn the key to start the motor kicks on and spins the engine. The starter then disengages. Your alternator is hooked up to the engine with a belt, it charges the battery, ALL of your electrical systems on your car are hooked to the battery. The voltage off the alternator is very noisy and will damage the sensitive electronics in your car. When the voltage drops on the battery your alternator engages and starts charging, if your on a long road trip or there isn’t a high electric load on the batteries your alternator will actually disengage and free spin so it won’t overcharge the battery. If the voltage regulator fails your battery will actually overcharge and start to boil and can explode. Once the load increases or the voltage on the battery drops the alternator engages and starts charging again.

You are viewing 1 out of 7 answers, click here to view all answers.