Car batteries, when you take a look at the function they provide, really are a strange component to a vehicle. As with the starter, they basically only provide a two second surge of electricity to start the car. After that, they’re pretty much dead weight being carried around with you. Why is that? Doesn’t the battery still run the electrical systems of the car? The answer really is no. Once the car is started, the alternator, which is basically just a standard generator, both runs the electrical systems and recharges the battery. In the long run, your alternator is responsible for the electrical components of the vehicle. So why not use the alternator to start the car then? Unfortunately you can’t.
Odds are, you probably own a gasoline or diesel powered vehicle. If you are considering making the switch to an electric car, there are some things you should consider before getting started.