Battery flickering on 2007

[trojjanhorse]

Hi folks,

Before I am asked to search the forum, I have.

My battery is flickering and when I'm driving for long distances, it will turn off, but eventually turns back on. When it flickers, I notice my headlights and the cabin lights will respectively change their intensities. I.e.: when the battery light is off, the headlights are on full and the steering wheel is fluid and not stiff (power steering).

Here's what I have done so far:
1) Opened the voltage regulator off the alternator and cleaned all contacts.
2) Checked the ALT-S fuse in the fuse box and it seems fine to me
3) Voltage of car battery via terminals when the car is off: 12.13V-12.48V
4) Voltage of between alternator and negative car termminal when off: 12.13V-12.48V
5) #3 while the car is running: 13.83-13.87V
6) #4 while the car is running: 13.93-13.95V

Any help would be much appreciated!

Thank you