Battery light/electrical problem

[carolinarose79]

I'm new to jeeping, just got my 2012 liberty in January. Recently my battery light has been coming on while driving. I have taken it to have the battery, starter and altinator checked. All passed inspection. The only noticeable issue is the lights (headlights, dash and interior) lightly flicker. I'm at a loss on what the issue could be. Anyone else had this issue? Any advice is appreciated.

 

[seafish]

Id start with the basics...

Closely inspect and check tightness of each battery terminal...
If necessary, remove and clean the terminals and connectors and then carefully reattach and tighten them. If you are removing the terminals, be sure to disconnect the ground first and later reconnect it last.

If in your inspection you find some dirt or corrosion, or any of them loose, then you may well have found your problem

If not, then move on to checking the various battery ground connections the same way.
You could also double check the tightness of the connections at the alternator.