This is also a very simple (meaning great) way to ensure that you don't -- ever -- leave it at a full range charge for hours overnight (i.e. good for battery lifetime).Plug in the night before in Standard charge mode. When I wake up in the morning, the first thing that I do is go down to the garage and switch to Range charge. By the time I take a shower, eat breakfast, check my e-mail and TMC, etc, more than an hour has passed and the S has finished charging to a full Range charge, and I am ready to leave.