So I googled some things and couldn't find anything that was close to my situation. Driving my car ( 91 Toyota Celica) I noticed the voltage gauge on my dashboard was a little bit lower than normal but still within the respectable range. 

I make it to work and as I'm pulling in the battery light cuts on although the voltage meter is still in the same range. So I talk to my boss and maybe a few minutes pass and I get back in my car to take it to advance auto parts down the street to get everything tested. When I turn on my car the voltage meter is where it normally is and no battery light. 

I take it to AAP and they test the alternator and the battery and both are fine. 

Later I go to lunch and the battery light is back on and the voltage meter is down to where it was this morning.
user
Voltage gauge is low, battery light is on
assistant
So I googled some things and couldn't find anything that was close to my situation. Driving my car ( 91 Toyota Celica) I noticed the voltage gauge on my dashboard was a little bit lower than normal but still within the respectable range. 

I make it to work and as I'm pulling in the battery light cuts on although the voltage meter is still in the same range. So I talk to my boss and maybe a few minutes pass and I get back in my car to take it to advance auto parts down the street to get everything tested. When I turn on my car the voltage meter is where it normally is and no battery light. 

I take it to AAP and they test the alternator and the battery and both are fine. 

Later I go to lunch and the battery light is back on and the voltage meter is down to where it was this morning.
user
Battery and alternator are fine. Battery light on
assistant