The battery will run as high as 14.4 or even 15.1, but if your battery when you start out in the morning is below 12.0...expect to hear the clicky clicky no start sound.
As for the running voltage, I have a gauge that gives me a digital readout so these are actual numbers on a 08. Your numbers may vary based on the condition of your stator.
That may also be something that you want to check into...there are upgrades to the stator if you are running a bit of equipment.
Good luck!