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
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
assistant