cezdoc
Member
Tesla have a useful write-up here: Supercharging
In a situation where idle fees could be applied (50% or more of bays in use) you have 5 minutes to move your car once charging is completed. You get plenty of app notifications that this is happening, but if you're in an area with poor phone signal it's sensible to make a note of how long the car thinks the charge will take if you're going to leave it*
Just to be clear on the 80% limit, this is applied to "high usage" sites but it's not a hard limit, you can bump it up manually if you want to (there are plenty of scenarios where you might need a higher charge). The idea is to nudge people to move on as soon as possible to free up the bays for others, and act as a reminder that charge rates slow down significantly as the battery fills up. You are informed about this on the charge screen when you plug in. Idle fees can apply to any site but the high usage limit appears to be only applied to certain sites.
I'm not aware of any formal arrangements for queueing at UK Supercharger sites (in the US I believe they sometimes send a shepherd out to busy sites at peak times/holidays). I haven't seen any issues reported on forums so I assume drivers are civil and folk waiting will charge in turn. Once at Gretna I missed a space because I was circling round to repark opposite and someone else arrived just as a bay became free. On that occasion I just waited until another bay freed up (10 minutes as it turned out) as I didn't want the bother of explaining/convincing the other driver that I'd been there before them!
*if you start charging with a cold battery or are sharing a pair with another car, be aware that your charge rate could increase and the session might then finish earlier than initially predicted.
