Regarding battery drain, my 3 Roadsters all suffered and were empty after two weeks w/o conditioner. But my 2014 4/4 can be put away for loads of weeks, even with the battery still connected. Although there is a LED blinking, not that one on the dash but another one deep underneath, above the radio area I'm wondering if the immobiliser of my 4/4 works at all...
sorry for thread drift, I know that this is not the Trad section, I only mentioned it because different models show different behave.