Right now my garage has a 30 amp J1772 charging unit installed that I use for my Model S as needed, and I just acquired a Roadster. I don't know how much I'll be driving the Roadster over the winter, but I'm thinking if there's no snow on the ground I might take it out for short trips reasonably often. I've got it charging in Standard Mode and the range more than suits my needs 99% of the time. What is the consensus for maintaining battery health? Do I need to keep it plugged in as often as possible? I know about the "vampire" drains of a few miles of range per week if it sits, but is that bad for the battery? What's the lowest charge I should ever let it get to if I can help it? My thinking is that for now I might use the J1772 charger on it and could use the 110v charger the rest of the time if needed but I'd prefer not to if I don't have to. Down the road I might install a 240v outlet for the Roadster but the configuration of my home's floorplan makes it a big of a pain to do. Anyway, that's my situation, I'd love to learn more about how to keep my Roadster's battery in tip-top shape! Thanks.