If it was left plugged in in storage mode there will be nothing wrong w/ it. And that's one nice thing about the Roadster (and hopefully Model S) - end users can pull the logs and view all of this info using tools the geniuses here on TMC have devised. You can see for the car's history how much time the car spent at high SOC, low SOC, how many times it was run down to 0, etc. So as a prospective buyer you can scan through the logs and decide if you want to adjust your offer based on usage. It's much more difficult to do this w/ an ICE.