When we got SAGE, my dealer said that if the car is to be sitting for 7 or more days that the 12 volt battery should be disconnected to prevent it draining. Are they blowing smoke?
7 days is fine; 7 *weeks* I'd start worrying about. But if you turn off your SKS enable and pull the DOME fuse, 12V drain should drop to about zero and then you're just left with whatever self- discharge the battery will do on its own. . _H*