Why is the battery light on in your 2001 Kia Optima?
Trufully, my battery just died yesterday, and the battery light
did not come on, the only time it comes on is when the alt isn't
charging. I've replaced 2 batteries and 4 alts in my 01 optima!!
Although it is a battery icon, what it really means 99 times out of
100 is that the battery is not being charged and although it could
indicate a battery that is tired and due for renewal (I always get
a new one every 3 years; 2 years if it's the original thing the car
comes with) it usually indicates a fault with the alternator which
has, more than likely, worn out. 2001 might still be under warranty