Thanks for pointing this out!! The multimeter I've been using is the bigger CEN-TECH and it's definitely not working properly!!!
The CEN-TECH is reading almost 3 volts higher than the small red multimeter and the little charging plug!! The red meter and plug are reading the same so I'm inclined to think that those are correct!
I also tested a battery in my other vehicle with the CEN-TECH and the little red meter and the CEN-TECH is giving me 15.6v while the cheaper one is giving me 12.75v!!!!
The CEN-TECH is definitely not working properly! Crap! I'll be using the other one from now on!!!! I guess I'll have to go back out there and redo all the tests!!!!
Btw the little 12volt plug meter is how I discovered the voltage was too high!