I've read several posts on whether or not it is beneficial to disconnect/remove the engine battery for a long period of winter inactivity. I'm not asking about that. What I am asking here is... are there any down sides to having the van sit with no 12v power to the engine, ECM etc? I'm no expert for sure, but I just wonder if there is something electronic that will reset or lose its memory or stop working after a long period of having no 12vdc power. In case it matters, mine is a 2008 Sprinter 3500 cargo van converted to campervan. Thanks, Neil