I have 3 year old Rolec (both at home and at work), apparently quality has improved, but both mine have needed Sparky visit approx once a year to fix something. I'm about to bin the one at home as I'm fed up with getting up in the morning and finding it decided to stop charging in the middle of the night.
Tesla wall charger will load balance - when you have Two Tesla's on your drive
If you are having a Sparky fit a Wall Charger I suggest you also get them to fix a just-in-case Commando Socket. I've used mine every time my Rolec has failed ... and a vising EV could use ti too (although I have never had one, that wasn;t a Tesla
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You set the required (i.e. maximum) charge on the dash. Normally you'd probably just leave that alone - e.g. at 90%. Dash also allows a Start Time to be set (which is GPS-aware, so setting it for Home won't delay charging when you plug in at a e.g. a hotel).
Before current V9 software there was also a charge-now button. The Tesla-normal-rubbish QA failed to migrate that to V9, so now you have to disable "scheduled charge" in order to "charge now" ... and then of course you have to remember to re-enable it, at THAT location, next time.
You can adjust AMPS from the dashboard too ... so if you are staying with friends and plugged into their frayed lawn mower extension plugged into a socket in the shed that is falling to bits
then if you find the plug getting hot after 30 minutes just dial-down the AMPS. Best to check the plug temperature before going to bed
Depends a bit how sophisticated you want to get ... I'm a Nerd (programmer by trade) so :
You can set the car to Start at midnight (for E7). (Don't forget to change it to 1AM when Summer Time starts ... no magic-bullet for that)
Car, conveniently, will still start if you come home late after a good party
I'm not sure how much slack there is, but its "quite a bit" (several hours)
Car will NOT stop at 7AM. Of course most nights midnight-to-7AM is all you need (7kW is about 22 MPH, so 150 miles).
In addition to car's own Scheduled Charge I use a 3rd party utility.
I leave for work at around 05:30, I want the car pre-conditioned before that, and ideally in Winter I would like a warm battery (cold battery has reduced regen for first 10-20 minutes)
My 3rd party scheduler reduces charge limit to 80% at midnight (if I am at home), and then back up to 90% at 04:30 (and restarts charging if stopped) so that the battery is charging, and warming, the last 60 minutes.
It also stops charging at 7AM. If I come home needing more than 150 miles I'll get that the following night on E7 ...
Of course all that means that if I *do* want Max Range tomorrow I have to override something. Typically I want 100% for those days, so I have another (optional) schedule which aims to complete 100% charging shortly before departure (not good to leave battery at 100% charge for hours on end ... nor below 20% either .. so if I arrive below 20% I charge immediately). My 100%-charge schedule also preconditions the car shortly before departure ... and turns OFF precondition if I then don't actually depart
(It used to be that pre-condition automatically stopped after 30 minutes, but an update somewhere along the way did away with that and I only discovered that when getting into the car during Xmas break and finding it was toasty warm, looking at the logs the pre-condition had been on, continuously, for 3 days !)
Lots of 1st world problems to be enjoyed
