An illuminated battery light means there’s something wrong with the car’s charging system, which primarily consists of the battery and alternator, along with some associated components.

If this light is on while your car's engine is on, then it's typically a sign that the battery charging system isn't working. In that case, you're going to have to take your car somewhere to get ...

The battery warning light alerts you to a malfunctioning charging system — if that comes on, visit a service center to find out if the issue is with the battery, alternator, or wiring.