The reason why your car can operate normally even though the battery light is on is because your car can run off the.
Check battery light car.
Basically if you see the battery light going on in your car you shouldn t expect to be able to drive it for very long.
The car s battery light coming on generally means that there is something preventing your car s electric system from charging off the battery.
The battery light or charging warning light available on the dashboard of your car indicates malfunctioning or poor charging of the battery this light illuminates whenever the charging system does not charge the battery with a voltage above approximately 13 5 volts.
If the battery light comes on and stays on while you are driving the most common cause is a broken alternator belt.
This light comes on when your alternator is not making electricity and the car is running off of battery power alone.
Total failure of the alternator is another possibility.
Your car s battery light is an indicator of when your car s charging system is malfunctioning.
The charging system warning light should show for a few seconds when you start the car but if the battery light shows while you re driving the vehicle that light signals a problem.
It s important to know how to respond when your car s battery light goes on.
This can be a result of a malfunctioning alternator a battery going bad or a number of other things.
You can drive a short distance on the battery especially if you turn off most of your car s electrical items like the radio air conditioning etc but there s no way to know how far you ll get before it dies.