so i had a blown fuse #6 to be exact the one that goes to the altenator, i have a brand new alternator and oem battery, but it read that i only have 13.5 volts, i already had the battery load tested and it tested fine so did the alternator, what else could it be, or is 13.5 volts "good enough" for me not to worrie about

 

Measure the voltage with the car off. Measure the voltage with the car running. Measure the voltage with the car running and lots of accessories on such as high beams, blower, radio, etc. Each time the voltage should increase.

 

13.5 is standard RUNNING voltage. If you see that going up and down there is problems. Just need to be above 13 to charge the battery. 13.5 is dead on.