Battery light won't come when car starts up in my

Could be the light is burned out, Mine did, and it gave me fits!! Do this to be sure, have the battery LOAD tested, that way your sure it not only has 12 volts showing, but also the correct amps being stored,, once your sure the battery is fully charged and ok,, start the car,, with a multi meter, check the posts,, you should be getting a reading of between 13.5 -14.5 volts dc,, if you get that your alternator is doing its job,