I'm a new owner, not even a week old, and drive very little so far. I'm wondering of it would be good to discharge the battery down to 10% or some low number, then charge it back up. Given my schedule, the only way to do that is to let vampire drain and city driving consume the energy over a week or two, then charge. My car sits in a heated, insulated garage so there's not cold weather impact on the vehicle. Can I *not* plug in overnight for a while to discharge it once?