Hey @redmamoth - good to see you enjoying the ownership experience! Yeah, it was all going fine, I have setup the Anytime stuff under my OVO account and am using the Indra App to monitor what's going on and communicate with Ovo as to when it can charge and to set the schedule, then just relying on the settings in the Tesla to control the maximum charge. It worked totally as expected. For me at least though, it was only when I installed the OVO App that I believe talks directly to both the car and the charger that it went a bit weird and I lost about 15% overnight when normally I would only expect to lose 1-2% based on previous experience. The car wasn't plugged in, so I am guessing that the App was pinging it pretty consistently to check if it was yet plugged in and could start charging.I did my first charge 40% -> 70% via OVO anytime last night using the granny charger. I haven't noticed any vampire drain yet but i'll keep an eye on it!
Are you using the OVO app to manage the charge process? I'm wondering if I imagined it and may well try a more scientific test if you're not seeing the same.