with engine on and no electrical load, its usually 13.6-13.8.

It never reaches 14. with lights & ac on and the engine on idle, its around 13.0
If above 2000 rpm it goes up to 13.5

With engine off it is 12.5

how the hell do some of you guys get 13.4 volts with engine off? car batteries are meant to be 12 volts?!?!