Re: Batterie trouble...
we did have the problem here with fuel pump relay, it would not turn off pump and discharge the battery (I know, it happened to me many times). Would happen twice in 2 days and then not for a few months.
There is a fix (recall) for this, maybe look at that?
2011 WK2 Laredo X, V8, Inferno Red Crystal Pearl with Greystone interior, Pano sunroof, ORA I, Tow Group